Shanghai Huabang Industrial Business Network - high-voltage circuit breaker

[Low oil circuit breaker]SW2-63 High voltage low oil circuit breaker

2026-6-10 20:55:09

The SW2 series high-voltage low oil circuit breaker is a three-phase AC 50Hz outdoor high-voltage power equipment, mainly used for control and protection of transmission lines, and can also be used as a contact circuit breaker. This series of circuit breakers is based on a 63kV arc extinguishing unit, using a double tube structure arc extinguishing chamber and a longitudinal and transverse arc extinguishing principle. Form a single or multiple break block structure according to different voltage levels. SW2-63 type single column single fracture surface per phase. SW2-110 type single column double fracture surface for each phase. SW2-220 type double column with four fracture surfaces per phase. The SW2 series low oil circuit breaker is developed based on SW2-60 and SW6-220 through a series of significant improvements. This product has the characteristics of strong series, high breaking current, simple structure, reliable action, and easy installation and debugging

model	name	unit	data	Example diagram
model	name	KV	SW2-63II/1600-25	Example diagram
one	rated voltage	KV	sixty-three
two	Maximum operating voltage	KV	seventy-two point five
three	rated current	A	one thousand and six hundred
four	rated frequency	KA	twenty-five
five	Rated short-circuit breaking current	KA	twenty-five
six	Thermal stable current	KA	twenty-five
seven	Thermal stability time	S	four
eight	Dynamic stability current (peak value)	KA	sixty-three
nine	Rated short-circuit closing current (peak)	KA	sixty-three
ten	When closing (minimum, maximum, rated operating voltage)	KV	zero point two five
	Minimum operating voltage	KV	zero point two
eleven	Rated operating voltage	KV	zero point two two
	Maximum operating voltage	KV	zero point two five
twelve	Rated operating sequence		0-0.5 S-CO-180 S-CO
thirteen	Net weight of circuit breaker	Kg	one thousand one hundred and forty
fourteen	oil weight	Kg

SW2-63 High Voltage Low Oil Circuit Breaker

[Low oil circuit breaker]SW2,SW4,SW6 Series Outdoor High Voltage Low Oil Circuit Breaker

2026-6-10 20:55:00

SW2, SW4, SW6 series outdoor high-voltage low oil circuit breakers

[Low oil circuit breaker]SN10 High Voltage Low Oil Circuit Breaker

2026-6-10 20:54:50

The SN10-10 (C) and SN10-35 (KV) series indoor high-voltage low oil circuit breakers are indoor switchgear in slurry filled 50Hz three-phase AC systems, which can be used for protection and control in industrial and mining enterprises, power plants, and substations.

Main technical parameters of SN10 high-voltage low oil circuit breaker

serial number	Name				unit	Numerical value
						SN10-10 I��C��/630-16	SN10-10 I/ 1000-16	SN10-10 II ��C��1000-31.5	SN10-10 III (C)/1250-40	SN10-10 III (C)/2000-40	SN10-10 III (C)/3000-40
one	rated voltage				KV	ten
two	maximum voltage					eleven point five
three	Rated insulation level		Lightning impulse withstand voltage (full wave)			seventy-five
			Power frequency withstand voltage for 1 minute			forty-two
four	rated current				A	six hundred and thirty	one thousand	one thousand	one thousand two hundred and fifty	two thousand	three thousand
five	Rated short-circuit breaking current		6KV 10KV		KA	twenty		thirty-one point five	40 (Fen-180S-HeFen-180S-HeFen) 31.5 (Fen-0.5S-180S-Fen)
						sixteen
six	Rated operating sequence					Fen-0.5S-180S-Fen
seven	Rated short-circuit closing current (peak)				KA	40;50*		eighty
eight	Rated peak closing current					40;50*		eighty
nine	Rated short-circuit withstand current					16;20*		thirty-one point five
ten	Rated short-time duration				S	four		two		four
eleven	closing time		Electromagnetic mechanism Spring mechanism	not greater than		zero point two
						zero point one five
twelve	Opening time	When electricity		minimum		zero point one		zero point one
		voltage		rated		zero point zero six		zero point zero six	0.07 (main cylinder)
		Source Force		highest		zero point zero six		zero point zero three	0.07 (main cylinder)
thirteen	weight	Circuit breaker body (oil-free) oil (three-phase)				one hundred		one hundred and twenty	one hundred and forty	one hundred and seventy	one hundred and ninety
						six		eight	nine	thirteen
fourteen	Model of the accompanying institution		Electromagnetic mechanism			CD10 I		CD10 I		CD10 III
			Spring mechanism					CT8 I CTB II

If the rated breaking current is 20KA (below 6KA), the rated short-circuit closing current, rated peak withstand current is 50KA, and rated short-time withstand current is 20KA

External installation dimensions of SN10 high-voltage low oil circuit breaker

SN10 type high voltage low oil circuit breaker

[Multi oil circuit breaker]DW10-10 type column mounted multi oil circuit breaker

2026-6-10 20:54:11

The DW10-10 column mounted multi oil circuit breaker is used in a three-phase AC 50Hz power system with a rated voltage of 10KV for load current, overload current, and short-circuit protection.
This product is installed on outdoor poles and operated on the ground with hooks or ropes.
Terms of Use
1. Altitude not exceeding: 4000 meters;
2. The ambient temperature ranges from -30 �� to 40 ��;
3. Places without flammable gases and conductive dust;
4. Places without easily corrosive gases and conductive dust;
Note: The ambient temperature is related to the transformer oil used. When the transformer oil is domestic grade 10 or 45 oil, the minimum operating temperature should not be lower than -45 ��.

Main technical parameters of DW10-10 column mounted multi oil circuit breaker

rated voltage ��KV��	Maximum operating voltage (KV)	Rated current (A)	Rated breaking capacity (MVA)	Rated breaking current (KA)	Limit passing current		Multiple of tripping device operating current	Product weight		Dimensions (mm)	Installation size (mm)
					Effective value KA	Peak KA		Without oil KG	Oil weight KG
ten	eleven point five	fifty	fifty	three point one five	four point two	eight	1.2-2	ninety-six	thirty-five	760x 510x860	380x260
		one hundred
		two hundred
		four hundred
		six hundred

[Multi oil circuit breaker]DW10-10/G Series Outdoor AC High Voltage Multi Oil Circuit Breaker

2026-6-10 20:54:01

DW10-10 I, II, III, G type outdoor high-voltage multi oil circuit breakers are three-phase AC 50Hz high-voltage switchgear suitable for urban or rural power systems with a rated voltage of 10KV, used for control and protection of power equipment and power lines. This circuit breaker can reliably switch between load current, overload current, and short-circuit current.

Main technical parameters of DW10-10/G series outdoor AC high-voltage multi oil circuit breaker

Rated voltage (KV)	Rated current (A)	Rated short-circuit breaking Current (KA)	Rated short-circuit closing Current (KA)	Rated peak tolerance Current (KA)	Rated short-time tolerance Current (KA)	Rated short-term duration Time (KA)	Weight (kg)
ten	thirty	one point eight two point nine	four point five seven point four	four point five seven point four	one point eight two point nine	four	ninety-five ninety-six
	fifty
	one hundred
	two hundred
	four hundred
	six hundred

Structure Introduction
The circuit breaker is a three-phase common box oil immersed mechanism, using plug-in copper tungsten contacts (one piece for Type I static contacts and two pieces for Type II static contacts). The box is equipped with an overcurrent release and a delay device, which can automatically release when the network fails. Oil also serves as an arc extinguishing insulation medium. The manual operating mechanism is installed at the front end of the box and integrated with the switch. The wire passes through the porcelain sleeve fixed on both sides of the box cover and is led out.
DW10-10 I-G type adopts anti type porcelain sleeve and increases the external insulation distance; The box cover and the box body are fully enclosed and connected; The tripping current can be adjusted inside the mechanism cover without opening the box.

DW10-10/G series outdoor AC high voltage multi oil circuit breaker external installation dimensions

DW10-10/G series outdoor AC high-voltage multi oil circuit breaker

[Multi oil circuit breaker]DW8-35 High Voltage Multi Oil Circuit Breaker

2026-6-10 20:53:53

DW8-35 High Voltage Multi Oil Circuit Breaker

[Multi oil circuit breaker]DW13-35 Series Outdoor AC High Voltage Multi Oil Circuit Breaker

2026-6-10 20:53:44

The DW13-35 high-voltage multi oil circuit breaker complies with national standards and is used for the protection of 35KV power systems Interlocking between control and system Circuit breakers are divided into two types: those without parallel resistors and those with parallel resistors, both of which have the same technical parameters and basic skills. Circuit breakers with parallel resistors also have reliable performance in meeting no-load long lines. Users must meet the requirements of no-load long lines. Circuit breakers can be used in heavily polluted areas and high-altitude areas

Main technical parameters of DW13-35 series outdoor AC high-voltage multi oil circuit breaker

Project		Unit	Technical data				Remarks
			DW13-35 type		DW132-35 Type I
rated voltage		KV	35��36��		35��36��		Note 1
Main maximum operating voltage		KV	40.5(36)		40.5(36)		Note 1
rated frequency		Hz	fifty		fifty
rated current		A	one thousand two hundred and fifty		one thousand and six hundred
Rated short-circuit breaking current		KA	twenty		thirty-one point five
Rated out of step breaking current		KA	five		eight
Rated short-circuit closing current (peak)		KA	fifty		eighty
Dynamic stability current (peak value)		KA	fifty		eighty
dynamic stable current		KA	twenty		thirty-one point five
Rated thermal stability time		S	four		four
Rated transient recovery voltage during short circuit at the output terminal (peak value, full capacity breaking)		KV	sixty-nine point four		sixty-nine point four
Rated lightning impulse withstand voltage (peak)		KV	one hundred and eighty-five		one hundred and eighty-five
Rated short-time (1-minute) power frequency withstand voltage		KV	eighty	ninety-five	eighty	ninety-five	Note 2
closing time		S	��0.35		��0.35
Opening time		S	��0.07		��0.07
Total breaking time		S	zero point one		zero point one		Note 3
Metal short circuit time during "closing and opening" operation		S	zero point one		zero point one
Rated operating sequence			0.5S-HeFen-180S-HeFen
Applicable altitude	Used for protection control	m	four thousand		four thousand
	Used for communication	m	three thousand		three thousand
Cut the length of the empty line		Km	fifty		fifty
Ceramic sleeve creepage distance		cm	one hundred and five		one hundred and five
Circuit breaker weight (with mechanism, oil-free)		kg	one thousand three hundred and fifty		one thousand nine hundred and thirty
oil weight		kg	three hundred and seventy		five hundred and fifty

1. There are differences between the rated voltage regulations of IEC standards and national standards. When providing products according to the IE56 standard, the rated voltage and maximum operating voltage are taken from the data in parentheses.
2. The actual short-term power frequency durability of the circuit breaker is higher than the standard specified 80KV, and the factory designs and tests it according to 95KV.
3. The fully open break time is the measured data after the short-circuit break test.

Installation dimensions of DW13-35 series outdoor AC high-voltage multi oil circuit breaker

[SF6 gas circuit breaker]LW31C-252 Three phase mechanical linkage outdoor high-voltage SF6 circuit breaker

2026-6-10 20:37:55

The LW31C-252 three-phase mechanical linkage outdoor high-voltage SF6 circuit breaker uses sulfur hexafluoride as the insulation and arc extinguishing medium. This circuit breaker is used as the main transformer protection equipment in power systems with AC 50Hz, rated voltage of 252kV, and rated current of 3150 and 4000A. It is equipped with an ETNA hydraulic operating mechanism and can perform three-phase fast automatic reclosing operation.

LW31C-252 three-phase mechanical linkage outdoor high-voltage SF6 circuit breaker features:
1. Simple design, mature components, and high reliability.
2. By applying the double principle, the contacts have precise geometric shapes and can be suitable for various operating conditions.
3. Contact separation is achieved through precise adjustment of arc blowing, resulting in minimal overvoltage when operating inductive currents.
4. Due to the enclosed state inside the arc extinguishing chamber, a hydraulic system is used in the hydraulic spring operating mechanism, resulting in low working noise.
5. Imported hydraulic mechanism is adopted, which has the advantages of stable performance, reliability, and high mechanical life.
Due to the use of special materials and multiple SF6 sealing systems for the separation of the two types of contacts, the maintenance interval is long.

[SF6 gas circuit breaker]Outdoor high-pressure sulfur hexafluoride automatic sectionalizer on columns

2026-6-10 20:37:46

The FDL4-12/400 outdoor AC high-voltage sulfur hexafluoride automatic sectionalizer uses sulfur hexafluoride gas as the arc extinguishing medium and insulation medium. It is mainly used as a control and protection device in AC 50Hz, 12kV transmission lines, and can be coordinated with devices such as reclosers, circuit breakers, and fuses. When the load side line or equipment fails and the fault current reaches or exceeds the rated starting current setting value, the segmenter counts the disconnection actions of the backup protection equipment. When the counting times reach the set value, the segmenter automatically opens and closes to lock. The segmenter has the function of opening and locking state memory, and also has the function of automatic tripping with single-phase grounding of the busbar, without the need for external auxiliary power supply. Remote control of on-site opening and closing can also be achieved through RS485 interface to achieve three remote controls.

Structural characteristics of FDL4-12/400 outdoor column mounted high-pressure sulfur hexafluoride automatic segmenter:
1. Adopting electronic PT and CT float charging, and capable of AC220V charging.
2. Equipped with RS485 and RS232 communication interfaces and multiple communication protocols.
3. Implement the "four remote" functions, namely remote control, remote adjustment, remote signaling, and remote sensing.
4. Equipped with on-site remote control switch opening and closing function, with a remote control distance of 30 meters.
5. Set the tripping current anytime and anywhere, with flexible setting values and high functionality.
6. It has the function of suppressing current surge.
7. The microcomputer protection and measurement device is equipped with a set of 20 batteries, and the battery capacity can support 50 hours after a power outage.

FDL4-12/400 Outdoor Column High Pressure Sulfur Hexafluoride Automatic Segmenter Model Meaning

Main technical parameters of FDL4-12/400 outdoor column mounted high-pressure sulfur hexafluoride automatic segmenter

FDL4-12/400 Outdoor Column High Pressure Sulfur Hexafluoride Automatic Segmenter Appearance and Installation Dimensions

FDL4-12/400 Outdoor Column High Pressure Sulfur Hexafluoride Automatic Segmenter

[SF6 gas circuit breaker]Outdoor high-pressure sulfur hexafluoride automatic sectionalizer on columns

2026-6-10 20:37:37

MZDL4-12/630-20 outdoor column mounted high-pressure sulfur hexafluoride automatic segmenter uses sulfur hexafluoride gas as the arc extinguishing medium and insulation medium. It is mainly used as a control and protection device in AC 50Hz, 12kV transmission lines, and can be coordinated with devices such as reclosers, circuit breakers, and fuses. When the load side line or equipment fails and the fault current reaches or exceeds the rated starting current setting value, the segmenter counts the disconnection actions of the backup protection equipment. When the counting times reach the set value, the segmenter automatically opens and closes to lock. The segmenter has the function of opening and locking state memory, and also has the function of automatic tripping with single-phase grounding of the busbar, without the need for external auxiliary power supply. Remote control of on-site opening and closing can also be achieved through RS485 interface to achieve three remote controls.

Structural features:
1. Adopting electronic PT and CT float charging, and capable of AC220V charging.
2. Equipped with RS485 and RS232 communication interfaces and multiple communication protocols.
3. Implement the "four remote" functions, namely remote control, remote adjustment, remote signaling, and remote sensing.
4. Equipped with on-site remote control switch opening and closing function, with a remote control distance of 30 meters.
5. Set the tripping current anytime and anywhere, with flexible setting values and high functionality.
6. It has the function of suppressing current surge.
7. The microcomputer protection and measurement device is equipped with a set of 20 batteries, and the battery capacity can support 50 hours after a power outage.

MZDL4-12/630-20 Outdoor Column High Pressure Sulfur Hexafluoride Automatic Segmenter Main Technical Parameters

MZDL4-12/630-20 Outdoor Column High Pressure Sulfur Hexafluoride Automatic Segmenter Appearance and Installation Dimensions

MZDL4-12/630-20 Outdoor Column High Pressure Sulfur Hexafluoride Automatic Segmenter

[SF6 gas circuit breaker]LW36-72.5 Outdoor high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:37:28

LW36-72.5/126 Outdoor High Voltage AC Ceramic Column

Environmental conditions for use
Environmental temperature -25~+40 ��/-40~+40 �� (cold resistant type)
Altitude �� 2500m
Monthly average air humidity not exceeding 90% (25 ��)
Wind speed not exceeding 35m/s
Sunshine intensity �� 1000w/m2
Earthquake intensity of 8 degrees
Ice thickness �� 10mm
Pollution level III/IV
Maximum daily temperature difference of 25K

Main technical parameters of LW36-72.5 outdoor high-voltage sulfur hexafluoride circuit breaker

serial number	Technical requirements	unit	Numerical value	Numerical value
one	rated voltage	kV	seventy-two point five	one hundred and twenty-six
two	rated frequency	Hz	fifty	fifty
three	rated current	A	three thousand one hundred and fifty	three thousand one hundred and fifty
four	Rated breaking current of circuit breaker	kA	forty	forty
five	Rated short-circuit closing current	kA	one hundred	one hundred
six	Initial polar coefficient		one point five	one point five
seven	Rated short-time withstand current	kA	40��4S��	40��4S��
eight	Rated peak withstand current	kA	one hundred	one hundred
nine	Near area fault breaking current	kA	36/30	36/30
ten	Rated out of step breaking current	kA	ten	ten
eleven	Rated short-time power frequency withstand voltage	kV	160 (opposite ground, alternating)	230 (opposite ground, alternating)
eleven	Rated short-time power frequency withstand voltage	kV	202 (fracture surface)	230+73 (fracture surface)
twelve	Rated lightning impulse withstand voltage (peak)	kV	350 (to ground, alternating)	550 (to ground, alternating)
twelve	Rated lightning impulse withstand voltage (peak)	kV	410 (fracture surface)	550+103 (fracture surface)
thirteen	5-minute zero gauge voltage power frequency withstand voltage	kV	eighty-four	ninety-five
fourteen	Rated operating sequence		0-0.3s-C0-180s-C0	0-0.3s-C0-180s-C0
fifteen	closing time	ms	75±8	75±8
sixteen	Opening time	ms	30±5	30±5
seventeen	Total breaking time		�� 3 cycles	�� 3 cycles
eighteen	SF6 gas pressure (20 ��)	MPa	0.6/0.55/0.5	0.6/0.55/0.5
nineteen	Annual SF6 gas leakage rate	%	��0.5	��0.5
twenty	Equipped operating mechanism		CT30 Spring Operating Mechanism	CT30 Spring Operating Mechanism
twenty-one	Horizontal and vertical tension of wiring terminals	N	one thousand two hundred and fifty	one thousand two hundred and fifty
twenty-two	Horizontal transverse tension of wiring terminals	N	seven hundred and fifty	seven hundred and fifty
twenty-three	Vertical tension of terminal block	N	one thousand	one thousand

[SF6 gas circuit breaker]LW37-40.5 High voltage sulfur hexafluoride circuit breaker

2026-6-10 20:37:20

LW37-40.5 and LW37-40.5 (G) circuit breakers are outdoor installation, three-phase, AC 40.5kV high-voltage transmission and transformation control and protection equipment that use SF6 gas as insulation and arc extinguishing medium. The circuit breaker adopts the principle of self rotating arc extinguishing and belongs to the ceramic column sulfur hexafluoride circuit breaker. It adopts a three-phase split structure, with one break for each phase, which can be used to open and close rated current and fault current, switch capacitor groups, especially suitable for frequent operation, and can also be used as a contact circuit breaker.
The circuit breaker complies with standards such as IEC56 "High Voltage AC Circuit Breakers" and GB1984 "High Voltage AC Circuit Breakers".

Main technical parameters of LW37-40.5 high-voltage sulfur hexafluoride circuit breaker
Environmental conditions for use: altitude of 1000m, 3000m; Temperature+40 to -35 degrees (special requirements can reach up to 40 degrees)
Rated voltage: 40.5kV
Rated current: 1600A
Rated short-circuit breaking current: 25kA
Rated short-circuit breaking current breaking times: 25 times
Mechanical lifespan: 5000 cycles

Product features
1. Overall structure aspect
a) The circuit breaker is equipped with CT10A type spring operated mechanism, which can be installed in general type (parallel arrangement) and elevated type (middle hanging type), ensuring safe operation and convenient maintenance.
b) Circuit breakers are divided into plain type LW37-40.5 and plateau type LW37-40.5 (G) according to altitude.
2. In terms of technical performance
a) Adopting the self powered (rotary arc+thermal expansion) arc extinguishing principle, the circuit breaker requires less operating power (500-600J) for opening and closing, improving the mechanical performance of the product;
b) Adopting a built-in LR (B) -40.5 current transformer, the product is easy to install and debug, and occupies a small area;
c) The few sealing points ensure the sealing performance of the circuit breaker

[SF6 gas circuit breaker]LW24-40.5/72.5 Outdoor high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:37:11

name		unit	LW24-40.5	LW24-70.5
rated voltage		kV	forty point five	seventy point five
rated current		A	1250,2000,2500,3150
rated frequency		Hz	fifty
Rated short-circuit breaking current		kA	forty	thirty-one point five
Rated short-time withstand current and duration		kA/s	40/4	31.5/4
Rated peak withstand current		kA	one hundred	eighty
Rated closing current (peak value)		kA	100	eighty
Rated short-time power frequency withstand voltage (effective value)	fracture	kV	95+23.4	160+42
	to the ground		ninety-five	one hundred and sixty
Rated lightning impulse withstand voltage	fracture	kV	185+33	350+59
	to the ground		one hundred and eighty-five	three hundred and fifty
Creepage distance ratio		mm/kV	thirty-one	thirty-one
Total breaking time		ms	��60
Inherent opening time		ms	��30
closing time		ms	��100
mechanical life		time	ten thousand
Rated operating sequence			O-0.3s-CO-180s-CO or O-15s-CO
Rated pressure of SF6 gas		MPa	0.50��0.40
SF6 gas alarm/lockout pressure		MPa	0.45/0.40��0.35/0.30
Rated voltage of control circuit		V	DC220/110
Rated voltage of energy storage motor circuit		V	DC220/110��AC220/110
Rated back-to-back capacitor bank breaking current		A	1500,2000	two thousand
Rated short-circuit breaking current breaking times		time	twenty
Rated parallel reactor suitable for current		A	1600,2000	one thousand and five hundred

LW24-40.5/72.5 Outdoor High Voltage SF6 Circuit Breaker

[SF6 gas circuit breaker]LW42-40.5 SF6 Circuit Breaker

2026-6-10 20:37:01

LW42-40.5 SF6 Circuit Breaker

Rated voltage 40.5kV, rated current 2000A, rated short-time withstand current 31.5kA, rated short-circuit duration 4s, rated peak withstand current 80kA. The circuit breaker is equipped with CT14 spring operated mechanism.

[SF6 gas circuit breaker]SF6 Indoor high-voltage handcart type SF6 circuit breaker LN2-40.5 LN2-12

2026-6-10 20:36:49

LN2-40.5, 12 type indoor high-voltage handcart sulfur hexafluoride circuit breaker, suitable for three-phase AC 50Hz, 35kV, 10kV power systems. It can be used to open and close rated current and fault current, and can be used in frequent operating situations. It can also be used as a circuit breaker for connecting and closing capacitor banks.

LN2-40.5 indoor high-voltage handcart SF6 circuit breaker equipped with CT10 spring operating mechanism (AC and DC dual-use)

Technical Specifications
Main technical parameters LN2-40.5 LN2-12
��
Rated voltage 40.5 12
Rated current 1250 1250 1600 1250
Rated short-circuit breaking current 16 25 25 25
Rated short-circuit breaking current breaking times (times) 20 20 20 20
Mechanical lifespan (times) 6000 6000 3000 10000

[SF6 gas circuit breaker]ZW17-40.5 Outdoor High Voltage SF6 High Voltage Circuit Breaker

2026-6-10 20:36:41

ZW17-40.5 outdoor high-voltage SF6 circuit breaker is a three-phase AC 50Hz outdoor high-voltage electrical equipment, suitable for control and protection of 40.5kV transmission and distribution systems, and can also be used for connecting circuit breakers and opening and closing capacitor banks.

ZW17-40.5 series vacuum circuit breaker is an outdoor high-voltage switchgear with three-phase AC 50Hz, which can be widely used in 40.5kV power transmission and transformation systems as a means of breaking and closing load currents, overload currents, and short-circuit currents, especially suitable for places with frequent operation. The insulation performance of oral products is low, and the design is improved based on the theoretical basis of ZW17-40.5 products. 2. This product complies with the requirements of GB1984-2003 "AC High Voltage Circuit Breakers". Main features: 1. Outdoor vacuum arc extinguishing chamber is selected, which has the advantages of safety, reliability, and long service life; 2. Adopting new insulation materials to avoid the impact caused by inflation, oil filling, etc; 3. Current transformers have the characteristics of high precision, large capacity, variable ratio, and multiple stages; 4. Can be equipped with two mechanisms: electromagnetic operation or spring operation; 5. Circuit breakers have three types of structures: horizontal, central, and CT external.

Product advantages

1. This product complies with the requirements of the national standard GB1984-2003 "AC High Voltage Circuit Breakers" and the International Electrotechnical Commission standard IEC56 publication "High Voltage AC Circuit Breakers".
2. This product applies advanced arc extinguishing principles, with excellent breaking performance, fast recovery of dielectric strength, low risk of reignition and heavy breakdown, short arc ignition time, and long electrical life;
3. No combustion or explosion hazards, can be used in densely populated areas;
4. Equipped with CT10-A electric spring operating mechanism with excellent performance, low operating power and high reliability;
5. Outdoor dry-type current transformers can be attached according to user requirements

[SF6 gas circuit breaker]LW22B-40.5/T2000-31.5 Outdoor high-voltage AC sulfur hexafluoride circuit breaker

2026-6-10 20:36:32

The LW22B-40.5/T2000-31.5 outdoor high-voltage AC sulfur hexafluoride circuit breaker is equipped with a CT14 spring operated mechanism, which can be suspended, parallel, and vertically arranged. This sulfur hexafluoride circuit breaker can also be equipped with a built-in current transformer.

The main technical parameters of LW22B-40.5/T2000-31.5 outdoor high-voltage AC sulfur hexafluoride circuit breaker are as follows:

Rated voltage: 40.5 kV;
Rated current: 2000A;
Rated short-circuit breaking current: 31.5 kA (duration: 4s);
Rated short-circuit closing current (peak): 80 kA;
Rated power frequency withstand voltage (effective value to ground/fracture): 95/110 kV;
Rated lightning impulse withstand voltage (peak to ground/fracture): 185/215 kV;
Rated SF6 gas pressure (gauge pressure at 20 ��): 0.45 MPa;

[SF6 gas circuit breaker]LW17A-126/T3150-31.5 Outdoor high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:36:23

The LW17A-126/T3150-31.5 outdoor high-voltage sulfur hexafluoride circuit breaker is designed based on the technology introduced by ABB, using sulfur hexafluoride gas as the main insulation and arc extinguishing medium, and equipped with a highly reliable spring operating mechanism. It is mainly used to complete operations such as switching normal load current, cutting off fault current, and converting power lines, achieving control and protection of the 126kV power system.

The main technical parameters are as follows:

Rated voltage: 126kV
Rated current: 3150A
Rated short-time breaking current: 34.5kA (duration: 4s)
Rated short-circuit closing current (peak): 80kA
Rated power frequency withstand voltage: 230kV
Rated lightning impulse withstand voltage: 550kV
Rated SF6 gas pressure (gauge pressure at 20 ��) 0.5 MPa

[SF6 gas circuit breaker]LW31A/B-252 Outdoor high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:36:14

The LW31A (B) -252 outdoor high-voltage sulfur hexafluoride circuit breaker uses sulfur hexafluoride gas as the main insulation and arc extinguishing medium, and is equipped with a highly reliable hydraulic spring operating mechanism. It is mainly used to complete operations such as switching normal load current, cutting off fault current, and converting power lines, achieving control and protection of three-phase mechanical separation and three-phase electrical linkage in the 220kV power system. This product has the characteristics of short breaking time (2 cycles), large breaking capacity, high reliability, and frequent operation.

The main technical performance of LW31A/B-252 outdoor high-voltage sulfur hexafluoride circuit breaker is as follows:
Rated voltage: 252kV
Rated current: 4000A
Rated short-time withstand current 50kA (duration: 3s)
Rated peak withstand current 125kA
Initial opening coefficient: 1.5
Rated power frequency withstand voltage for 1 minute (effective value): 460kV
Rated lightning impulse withstand voltage (peak): 1050kV
Mechanical lifespan: 5000 cycles
Electric lifespan: 20 times

[SF6 gas circuit breaker]LN��-35 Type Indoor High Voltage SF6 Circuit Breaker

2026-6-10 20:36:06

LN �� -35 indoor high-voltage SF6 circuit breaker is suitable for use in power systems with AC frequency of 50HZ, rated working voltage of 35KV, and rated working current of 1250-3150A. It is used as a control and protection equipment for electrical equipment in industrial and mining enterprises, power stations, and substations. It can also be used as a control and protection equipment for frequent operation of capacitor banks, high-voltage motors, and electric furnace transformers.

Product model and name

LN �� -35 Indoor High Voltage SF6 Circuit Breaker Operating Conditions

1. Installation height not exceeding 1000m above sea level
2. The ambient temperature is -10~40 �� (the actual minimum temperature can reach -20 ��)
3. Relative humidity not exceeding 90% (25 ��)
4. The installation site should have no fire or explosion hazards, no chemical gases or vapors that severely corrode metals and insulation materials, and no severe vibrations

structural characteristics
The LN �� -35 SF6 circuit breaker is a column type three-phase structure, with the three phases fixed to the handcart through the bottom box and the upper three insulators. The spring operated mechanism drives the large shaft to rotate through the side rod, thereby driving the rocker arms of the three phases to push the small shaft, making the three-phase conductive rods and pistons move vertically in a straight line to achieve opening and closing. The opening force comes from the opening spring connected to the large shaft, and both opening and closing are equipped with oil and mechanical buffers.
The arc extinguishing chamber structure of LN �� -35 circuit breaker is mainly of the compressed air type, which generates a strong arc blowing effect towards the nozzle during the movement of the piston. A density relay is installed on the box to monitor the pressure changes of SF6 gas and automatically sound an alarm. Each phase circuit breaker is equipped with an adsorption cover inside, which contains F-03 adsorbent that can adsorb moisture and impurities in SF6 gas at any time. The dynamic and static contacts (arcing contacts) of the circuit breaker are made of high-strength and high-performance copper and copper tungsten 80 (WCu80) sintered as a whole, which has good conductivity and high arc resistance. Equipped with CT �� spring operating mechanism.

[SF6 gas circuit breaker]SF6 self powered circuit breaker

2026-6-10 20:35:57

The LW35-245 self powered sulfur hexafluoride circuit breaker is an outdoor AC three pole 50Hz high-voltage transmission and transformation equipment, used for opening and closing rated current, fault current or conversion lines, to achieve protection, control and operation of the transmission and transformation system, and can perform opening, closing and fast automatic reclosing operations as well as three pole electrical linkage.
This circuit breaker adopts the latest design principles and has the characteristics of simple structure, small size, low consumables, low required operating energy, high reliability, easy installation, and low noise. It is a new generation of high-voltage sulfur hexafluoride circuit breaker developed and researched by our company.

Environmental conditions for use
Environmental temperature: -30 �� to+50 ��.
Wind pressure: not exceeding 700pa.
Altitude: not exceeding 3000m.
Seismic intensity: not greater than 9 degrees.
Air pollution level: Level III.

Rated parameters of LW38-245 self powered SF6 circuit breaker
The rated parameters of circuit breakers and operating mechanisms are shown in Table 1.
Table 1 Rated Parameters of Circuit Breakers

serial number	name		Main technical parameters
one	Rated voltage kV		two hundred and twenty
two	Rated insulation level kV		See Table 2
three	Rated frequency Hz		fifty
four	Rated current A		three thousand one hundred and fifty
five	Rated short-circuit breaking current kA		forty
six	Rated short-time withstand current kA		forty
seven	Rated peak withstand current kA		one hundred
eight	Rated short-time duration s		three
nine	Rated short-circuit closing current (peak) kA		one hundred
ten	Near area fault breaking current kA		30/36
eleven	Rated line charging interruption current A		one hundred and twenty-five
twelve	Rated out of step breaking current kA		ten
thirteen	Accumulated breaking times under rated short-circuit breaking current (times)		sixteen
fourteen	First open pole factor		one point three
fifteen	SF6 gas pressure (20 ��) MPa		See Table 3
sixteen	Rated voltage of control circuit and auxiliary circuit power supply		See Table 4
seventeen	Rated operating sequence		Min-0.3s HeFen-180s HeFen
eighteen	mechanical properties		See Table 5
nineteen	Main circuit resistance ��		fifty
twenty	Mechanical durability of circuit breaker (times)		three thousand
twenty-one	Static tensile force of wiring terminals	Horizontal and Vertical FshA N	one thousand two hundred and fifty
		Horizontal and Horizontal FshB N	one thousand
		Vertical direction FtVm N	one thousand two hundred and fifty
twenty-two	Annual SF6 gas leakage rate		��1%
twenty-three	SF6 gas moisture content (V/V) 10		��150
twenty-four	Contact stroke (mm)		200-4(+4)
twenty-five	Contact stroke of contact (mm)		28-2(+4)

[SF6 gas circuit breaker]SF6 Outdoor AC High Voltage Porcelain Column Circuit Breaker

2026-6-10 20:35:48

The LW39-126 outdoor AC high-voltage porcelain column SF6 circuit breaker is a high-performance new type of SF6 circuit breaker designed based on fully absorbing and digesting advanced foreign SF6 circuit breaker technology, in accordance with national standards, and combined with domestic industrial manufacturing level. This product is used in power systems with a frequency of 50Hz and a nominal voltage of 110kV. It is the main power equipment for control and protection in power plants and substations. Can be equipped with CT �� - type spring operated mechanism, three-phase mechanical linkage operation. SF6 gas with excellent arc extinguishing and electrical insulation properties is filled internally. All seals use double O-ring seals, which can effectively prevent leakage.

Characteristics of LW39-126 Outdoor AC High Voltage Porcelain Column SF6 Circuit Breaker

a�� High breaking performance, capable of reliably breaking short circuits, out of step faults, and near-field faults at the output terminal.
b�� The arc extinguishing chamber is manufactured using spinning technology, with excellent airflow characteristics and a simple structure.
c�� Long electrical lifespan, capable of breaking 20 times at full capacity, long maintenance cycle, low maintenance workload, and maintenance free for 10 years under normal operating conditions.
d�� The operating mechanism has low energy and adopts a simple and reliable compact spring operating mechanism.
e�� The gas has a low rated inflation pressure and is not easily liquefied at low temperatures.
f�� Small footprint.
g�� Low noise level, suitable for residential areas.
h�� The on-site installation time is short.

Model meaning

Technical parameters of LW39-126 outdoor AC high-voltage porcelain column SF6 circuit breaker

name		unit	parameter
rated voltage		kV	one hundred and twenty-six
rated frequency		Hz	fifty
rated current		A	three thousand one hundred and fifty
Rated short-circuit breaking current		kA	31.5/40
Rated short-time withstand current		kA/s	31.5 (4)/40(3)
Rated peak closing current		kA	one hundred
Rated peak withstand current		kA	one hundred
Total breaking time		ms	��65
closing time		ms	��110
Prime Minister's disconnection coefficient			one point five
Out of step breaking current		kA	ten
Rated operating cycle			0-0.3s-CO-180s-CO
Continuous breaking rated short-circuit current electrical life		time	20��40kA��
mechanical life		time	six thousand
Rated sulfur hexafluoride gas pressure		Mpa	0.55MPa/0.60
Power frequency withstand voltage	relatively	kV	two hundred and seventy-five
Power frequency withstand voltage	Between fracture surfaces	kV	two hundred and seventy-five
Peak value of lightning impulse withstand voltage	relatively	kV	six hundred and fifty
Peak value of lightning impulse withstand voltage	Between fracture surfaces	kV	six hundred and fifty

Ordering Instructions
1. Model, specifications, quantity, and ordering period;
2. Required accessories, spare parts, tools, and SF6 gas, etc;
3. If there are any other requirements, please negotiate when placing the order.

[SF6 gas circuit breaker]Elevated outdoor sulfur hexafluoride circuit breaker (stainless steel casing)

2026-6-10 20:35:40

LW36-40.5 (G) - CJ elevated porcelain column outdoor AC high-voltage sulfur hexafluoride circuit breaker (hereinafter referred to as the circuit breaker) is a control and protection equipment for outdoor installation, three-phase, AC 40.5kv level high-voltage transmission and transformation systems using SF6 gas as arc extinguishing and insulation medium. It can be used to split and close rated current and fault current, switch capacitor groups and conversion lines, especially suitable for frequent operation, and can also be used as a circuit breaker for interconnection.

This circuit breaker complies with the requirements of IEC "High Voltage AC Circuit Breakers" and GB1984 "High Voltage AC Circuit Breakers".

LW36-40.5 Elevated Outdoor SF6 Circuit Breaker (Stainless Steel Shell) Model Meaning

Environmental conditions for product use
a. Environmental temperature:
Maximum temperature+40 ��
Minimum temperature -30 ��
b. Relative humidity:
Daily average relative humidity �� 90%
Monthly average relative humidity �� 95%
c. Altitude:
Normal operating conditions: altitude not exceeding 1000m (referred to as flat prototype);
Special usage conditions: altitude not exceeding 3000m (referred to as high prototype);
d. The wind speed does not exceed 34m/s (corresponding to 700Pa on the surface of the cylinder);
e. The seismic intensity shall not exceed 8 degrees (horizontal acceleration 0.25g, vertical acceleration 0.125g);
f. Air pollution level: Level IV; Minimum nominal creepage distance: 31mm/kV

LW36-40.5 Elevated Outdoor SF6 Circuit Breaker (Stainless Steel Shell) Main Technical Parameters
1. Main technical parameters are shown in Table 1

The circuit breaker is equipped with CT14 and CT35 spring buckle mechanisms, and its electrical schematic, wiring diagram, main technical parameters, and installation form of the mechanism are center mounted
Table 2 Main Technical Parameters of Institutions

LW36-40.5 Elevated Ceramic Column SF6 Circuit Breaker with Built in Current Transformer Dimensions
(Stainless steel shell)

The circuit breaker can be equipped with LR �� -40.5 built-in current transformers, and each current transformer can provide multiple small ones. The wiring scheme can be found on the transformer nameplate and electrical wiring diagram, with the main technical parameters
(Note: Current transformers can be equipped with protection levels and can be reinforced).

Main technical parameters of current transformers

Ordering Instructions
6.1 When placing an order, please indicate the model, name, rated voltage, rated current, and rated short-circuit breaking current of the circuit breaker, as well as the model, name, energy storage motor, and opening/closing coil of the spring mechanism used
Rated voltage and rated current.
6.2 This circuit breaker can be equipped with one set of current transformers per phase, with a maximum of four secondary transformers per set. The installation of the transformers is shown in Figure 1 or can be selected by the user at their own location. Please specify the installation location when placing an order
Order the model, quantity, transformation ratio, accuracy level, and installation method of the current transformer.
6.3 If the user has other requirements, please contact our company directly.

[SF6 gas circuit breaker]LW38-72.5 type self powered outdoor sulfur hexafluoride circuit breaker

2026-6-10 20:35:31

LW38-72.5 type self powered outdoor sulfur hexafluoride circuit breaker

[SF6 gas circuit breaker]LW38-126/145 type self powered outdoor sulfur hexafluoride circuit breaker (stainless steel casing)

2026-6-10 20:35:22

The LW38-126 open combination electrical appliance is more capable of meeting the needs of the domestic electricity market compared to similar products abroad. Our company can not only design flexible and diverse layout forms according to the different needs of users, but also implement the general contracting of primary equipment (including interval support busbars, towers, etc.) and secondary equipment for the entire substation.
LW38-126 open type combined electrical apparatus has advanced structure and excellent performance, and all technical parameters fully meet the requirements of GB and IEC standards. This product has the characteristics of compact structure and small footprint of enclosed composite electrical appliances, as well as the advantages of cheap price and convenient maintenance of open electrical appliances. Its footprint is reduced by about 60% compared to conventional power stations, making it particularly suitable for use in urban networks, mountainous areas, and industrial and mining enterprise substations.

Structure Introduction
The LW38-126/145 type self powered outdoor sulfur hexafluoride circuit breaker (stainless steel casing) has two layout forms: indoor and outdoor. Each layout form can be divided into circuit breaker interval and measurement and protection interval. Each interval consists of two main parts: a fixed part and a movable part. The fixed parts include isolation plugs, grounding switches, and local operation control cabinets. The movable part is a movable electrical module that assembles different electrical components together based on a small car. sever
The movable part of the circuit breaker interval is composed of self powered SF6 circuit breakers, current transformers, and isolation plugs. The movable part of the measurement and protection interval is composed of voltage transformers, lightning arresters, and isolation plugs.

Main Features
LW38-126/145 type self powered outdoor SF6 circuit breaker (stainless steel casing) is a new generation of self powered SF6 circuit breaker, equipped with a spring operated mechanism. The structural form of the circuit breaker interval and the measurement and protection interval is consistent. Both the car and the grounding switch are equipped with electric operating mechanisms, including circuit breakers, which can be operated locally in the control cabinet. The secondary wiring from the on-site control cabinet to each component is plug-in, and an intelligent control cabinet can also be provided to achieve unmanned operation. The one-time wiring method is flexible and does not affect the user's continuous power supply during maintenance. The overall layout is simple, beautiful, and suitable for both indoor and outdoor use.

Usage environment
Environmental temperature: -30 ��~+40 ��
Wind pressure: �� 700Pa
Altitude: �� 3000m
Seismic intensity: �� 8 degrees
Air pollution level: Level III
Ice thickness: 10mm

Ordering Instructions
The layout and installation method of LW38-126/145 type self powered outdoor sulfur hexafluoride circuit breaker (stainless steel shell) are indoor or outdoor. Rated voltage, rated current, and short-circuit breaking current. The model, name, current ratio, voltage ratio, number of secondary coils, accuracy level, and rated output of current transformers, voltage transformers, and lightning arresters. Number and operation mode of grounding switches. Are towers and interval support busbars configured for outdoor layout. Other special requirements of the user can be negotiated. Comparison between conventional layout and LW38-126 layout
Taking a substation with a single busbar segmented 6-way incoming and outgoing lines and 2 main transformers as an example, the comparison content is shown in the table below.

2. Comparison of cross-sections between conventional layout and LW38-126 layout

LW38-126/145 General Technical Parameters

LW38-126 145 type self powered outdoor sulfur hexafluoride circuit breaker (stainless steel casing)

[SF6 gas circuit breaker]LW16-40.5 Type SF6 Circuit Breaker

2026-6-10 20:35:13

1. Product features
The LW16-40.5 sulfur hexafluoride circuit breaker is an outdoor porcelain pillar structure, equipped with a CT10A spring operating mechanism. The mechanism and body have various layout forms such as high, parallel, parallel extension, and vertical. The overall volume is small, the weight is light, the structure is simple, the operation power is small, and the installation and debugging are convenient. Mechanical lifespan of 5000 times, suitable for frequent operation.
The arc extinguishing chamber adopts a spiral arc and auxiliary compressed air self energy type, with excellent breaking performance and an electrical life of 21 times. There is no cut-off voltage in the opening and closing capacitor group and reactor group.

Reliable sealing performance, using imported sealing gaskets, static sealing adopts an "O" - shaped sealing ring structure, and dynamic sealing adopts a "V" - shaped sealing ring with spring pressure compensation structure. The secondary wiring board of the transformer is produced by the imported mold using the pressure injection process, which has strong anti-aging performance and ensures that the annual air leakage rate is �� 1%.
The entire product adopts a stainless steel structure. The fasteners, panels, and shells are all made of stainless steel material, and the internal brackets are hot-dip galvanized and will never rust.
The measuring grade iron core of the internal transformer is made of microcrystalline alloy with high magnetic conductivity, and the accuracy level can reach 0.2 or 0.2S. Each phase of the product can be equipped with 2-4 current transformers.

Main technical parameters of LW16-40.5 sulfur hexafluoride circuit breaker

serial number	name		unit	data
one	rated voltage		kV	forty point five
two	maximum voltage		kV	forty point five
three	Rated Absolute Edge level	Lightning impulse withstand voltage (full wave peak value)	kV	one hundred and eighty-five
three	Rated Absolute Edge level	Power frequency withstand voltage (1 minute)	kV	ninety-five
four	rated current		A	1600 2000
five	mechanical life		time	three thousand
six	Rated pressure of sulfur hexafluoride gas (gauge pressure at 20 ��)		MPa	0.6±0.015
seven	Sulfur hexafluoride gas replenishment alarm pressure (gauge pressure at 20 ��)		MPa	0.55±0.015
eight	Minimum functional pressure of sulfur hexafluoride gas		MPa	0.52±0.015
nine	Rated short-circuit breaking current		kA	25 31.5
ten	Rated short-circuit closing current (peak)		kA	sixty-three
eleven	Rated short-time withstand current (thermal stability current)		kA	twenty-five
twelve	Rated peak withstand current (dynamic stability current)		kA	sixty-three
thirteen	Rated out of step breaking current		kA	six point three
fourteen	Accumulated breaking times under rated short-circuit breaking current		time	twenty-one
fifteen	Rated short-circuit duration		S	four
sixteen	Closing time (at rated operating voltage)		S	��0.15
seventeen	Opening time (at rated operating voltage)		S	��0.06
eighteen	Rated operating sequence			Min-03s - Combination and Separation -180s - combined and separated
nineteen	Rated opening and closing current of a single capacitor bank		A	four hundred
twenty	Annual gas leakage rate		%/Year	��1
twenty-one	Moisture content of sulfur hexafluoride gas (at 20 ��)		uL/L	��150×10��6
twenty-two	Rated operating voltage for CT10-A spring operated mechanism			AC/DC:220V/110V

	Energy storage motor voltage		V	AC/DC:110/220/380
twenty-three	Weight of sulfur hexafluoride gas		Kg	six
twenty-four	Weight of circuit breaker (including operating mechanism)		kg	one thousand

LW16-40.5 sulfur hexafluoride circuit breaker

[SF6 gas circuit breaker]LW8A-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:35:04

The LW8A-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker is a three-phase AC 50Hz outdoor high-voltage electrical equipment; Suitable for control and protection of 40.5kV power transmission and distribution systems; It can also be used for connecting circuit breakers and opening and closing capacitor banks; And it can be equipped with a current transformer for measurement and protection purposes. LW8-40.5 circuit breaker is equipped with CT14 spring operated mechanism. The circuit breaker complies with the requirements of the national standard GB1984-1989 "AC High Voltage Circuit Breaker" and the International Electrotechnical Commission standard IEC60056:1987 "High Voltage AC Circuit Breaker". The main characteristics of a circuit breaker are excellent breaking performance, using a compressed air arc extinguishing chamber, short arc ignition time, long electrical life, and continuous breaking of 25 kA for 20 times without maintenance or replacement of sulfur hexafluoride gas at rated voltage; Reliable insulation, high mechanical reliability, strong closing ability, and the ability to operate frequently; Switching capacitor bank current of 400A without reignition; Cut the empty long line for 25 and 50 kilometers without reignition; Simple structure, small size, and long maintenance cycle.

2. Environmental conditions for use:
Altitude: not exceeding 2500; Rice; Plateau type 4000 meters; Environmental temperature: -30 �� -+40 �� (special requirement -40 �� -+40 ��); Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90% (25 ��); Wind speed: not exceeding 35 meters per second; The pollution level is level III; The porcelain sleeve has a creepage distance of 1050mm (1320mm) (nominal creepage distance not less than 25mm/kV). Sunshine: 0.1w/cm2; Ice cover: 10mm (MAX) Earthquake conditions: vertical acceleration of 0.3g; horizontal acceleration of 0.15g (MAX) in environments without flammable substances, explosion hazards, chemical corrosion, and severe vibrations.

Main technical parameters of LW8A-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker

serial number	Name		unit	Data
one	rated voltage		kV	forty point five
two	maximum voltage		kV	forty point five
three	Rated Absolute Edge level	Lightning impulse withstand voltage (full wave peak value)	kV	200 */215 (fracture) Note: Standardized 185 kV
		Power frequency withstand voltage (1 minute)	kV	95/118 (fracture surface)
four	rated current		A	1600/2000		1600/2000/2500/3150
five	mechanical life		time	five thousand
six	Rated pressure of SF6 (gauge pressure at 20 ��)		MPa	zero point four zero		zero point five zero
seven	Locking pressure (gauge pressure at 20 ��)		MPa	zero point three		zero point four zero
eight	Maximum operating environment temperature		��	-40		-30
nine	Rated short-circuit breaking current		kA	twenty	twenty-five	twenty-five	thirty-one point five
ten	Rated short-circuit closing current (peak)		kA	fifty	sixty-three	sixty-three	eighty
eleven	Rated short-time withstand current (thermal stability current)		kA	twenty	twenty-five	twenty-five	thirty-one point five
twelve	Rated peak withstand current (dynamic stability current)		kA	fifty	sixty-three	sixty-three	eighty
thirteen	Rated out of step breaking current		kA	five	six point three	six point three	eight
fourteen	Accumulated breaking times under rated short-circuit breaking current		time	twenty
fifteen	Rated short-circuit duration		S	four
sixteen	Closing time (at rated operating voltage)		S	��0.1
seventeen	Opening time (at rated operating voltage)		S	��0.06
eighteen	Rated operating sequence			Min-03s - Combination and Separation -180s - combined and separated
nineteen	Rated opening and closing current of a single capacitor bank		A	four hundred
twenty	Annual gas leakage rate		%/Year	��1
twenty-one	Moisture content of sulfur hexafluoride gas (at 20 ��)		uL/L	��150
twenty-two	Rated operating voltage for CT14 type spring operated mechanism			AC/DC:380/220V/110V
	Voltage of closing coil and opening coil		V	Communication: 220 380 DC: 48 110 220
	Energy storage motor voltage		V	Communication: 220 DC: 220/110
twenty-three	Weight of sulfur hexafluoride gas		Kg	five
twenty-four	Weight of circuit breaker (including operating mechanism)		kg	one thousand

LW8A-40.5 Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker

[SF6 gas circuit breaker]LW34-40.5 series outdoor high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:34:55

The LW34-40.5 series outdoor high-voltage sulfur hexafluoride circuit breaker has good breaking performance and adopts a pressure type arc extinguishing chamber. It has a long electrical life and can continuously break a short-circuit current of 40kA for 21 times at rated voltage without maintenance or replacement of sulfur hexafluoride gas. The mechanism has high reliability and a mechanical life of over 3000 times. It can be operated frequently and can be equipped with 12 current transformers for users to choose from This product adopts the newly opened MKZ SF6 pointer density gauge, and the pressure gauge reading is not affected by temperature changes, making it easy to use

[SF6 gas circuit breaker]LW3-12 series sulfur hexafluoride circuit breaker

2026-6-10 20:34:47

1. Overview
The LW3-12 series sulfur hexafluoride circuit breaker is a column mounted circuit breaker that uses SF6 gas as the arc extinguishing and insulation medium. It is currently a replacement product promoted and used in urban and rural power grids. Its excellent performance price ratio is incomparable to other 12KV outdoor circuit breakers.
The LW3-12 series sulfur hexafluoride circuit breaker is developed by our company in strict accordance with GB1984-89 "AC High Voltage Circuit Breaker". Its electrical and mechanical performance meets the requirements of DL402-91 "Technical Conditions for Ordering AC High Voltage Circuit Breakers" and GB11022-89 "General Technical Conditions for High Voltage Switchgear". Suitable for use as control and protection switches in small and medium-sized power stations and branch lines in power systems with a rated voltage of 12KV and a rated frequency of 50Hz.
2. Characteristics
Three level shared box, simple structure, compact layout
The power output is rotary, with good sealing effect.
The small mass of motion within the body reduces operational effort and improves mechanical lifespan.
The application of rotating arc technology has improved arc extinguishing efficiency and electrical lifespan.
The independence of the ontology structure can lead to products with different performance and installation methods.
Compared with vacuum and oil circuit breakers, it has significant advantages in structure, weight, safety, electrical strength, electrical life, maintenance, and cost.
Special arrangements and configurations of different transformer ratios for protection and measurement transformers can be made according to user needs.

3. Main technical parameters of LW3-12 series sulfur hexafluoride circuit breaker

serial number	Project Name			parameter				remark
one	Rated voltage (KV)			twelve
two	Rated current (A)			four hundred		six hundred and thirty
three	Rated frequency (Hz)			fifty
four	Rated insulation level (KV)	1-minute power frequency withstand voltage (effective value)	dry-type	42 (to ground, between levels, between fractures)				The circuit breaker is filled with 0.25MPa sulfur hexafluoride gas (20 ��)
			wet type	34 (for ground, inter level, and inter fracture)
		Lightning impulse durability withstand voltage (peak value)		75 (for ground, inter level, and inter fracture)
five	Rated line voltage of insulation level under zero gauge pressure (KV)			115 (conductive circuit to ground)
six	Rated short-time withstand current (KA)			8 125		16 20
seven	Rated peak withstand current (KA)			twenty	three hundred and fifteen	forty	fifty
eight	Rated short-circuit duration (s)			four
nine	Rated short-circuit breaking current (KA)			eight	one hundred and twenty-five	sixteen
ten	Rated breaking current of asynchronous grounding (KA)			seven	one hundred and nine	one hundred and thirty-nine	one hundred and seventy-three
eleven	Rated short-circuit closing current (peak) (KA)			twenty	three hundred and twenty-five	forty	fifty
twelve	Number of consecutive rated short-circuit current disconnections (times)			sixteen
thirteen	Breaking current under zero gauge pressure (A)			four hundred			six hundred and thirty
fourteen	Rated operating sequence		Type I	Fen-180S-HeFen-180S-HeFen
			II. Type III	Fen-0.5S-180S-Fen
fifteen	Recloser no current time (S)			zero point five
sixteen	Unified time (S)			��0.08
seventeen	Rated pressure of sulfur hexafluoride gas (MPa)			zero point three five				20��
eighteen	Minimum working pressure of sulfur hexafluoride gas (MPa)			zero point two five				20��
nineteen	Closing time (S)		Type I	��0.06
			II. Type III	��0.08
twenty	Opening time (S)		Type I	��0.06
			II. Type III	��0.04
twenty-one	Mechanical durability (times)			three hundred
twenty-two	Moisture content of sulfur hexafluoride gas in circuit breaker (ppm)			�� 150/300/factory/operation				volume ratio
twenty-three	Annual gas leakage rate of sulfur hexafluoride			��1%
twenty-four	Rated voltage of opening and closing coils and energy storage motors (V)			a��c�� 220 or d, c, 220				User confirmed
twenty-five	Current ratio of current transformer (A/A)			200/5�� 400/5�� 600/5 (regular)				User confirmed
twenty-six	Noise level (dB)			��110
twenty-seven	Weight of sulfur hexafluoride gas used for each disconnector (Kg)							twelve
twenty-eight	Total weight of circuit breaker (Kg)		Type I	one hundred and forty
			II. Type III	150, 160
twenty-nine	External dimensions, (L × D × H)		Level III pollution	1100×780×620				Including institutions

4�� Usage environment
[1] Altitude: �� 1000m.
[2] Environmental temperature: -40 �� to+40 ��.
[3] Pollution level: Level III and IV (25mm/kV, 31mm/kV).
[4] Earthquake intensity: not exceeding 8 degrees.
[5] Wind pressure: not exceeding 700Pa (equivalent to 34m/s).
[6] Installation location: A place without fire, explosion hazards, serious pollution, chemical corrosion, and severe vibration.

5�� LW3-12 series sulfur hexafluoride circuit breaker appearance and installation dimensions

LW3-12 series sulfur hexafluoride circuit breaker

[SF6 gas circuit breaker]LW36-126 Outdoor high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:34:38

The LW36-126 outdoor self powered high-voltage sulfur hexafluoride circuit breaker is suitable for use in AC 50Hz, 110kV power systems. It can be used as a control and protection equipment for power systems, as well as as as a contact circuit breaker. This product was awarded the 2001 National Economic and Trade Commission Key New Product Recommendation Certificate.

Main technical characteristics of LW36-126 outdoor high-voltage sulfur hexafluoride circuit breaker

1. The circuit breaker adopts the principle of self extinguishing arc, with strong breaking capacity, and can break up to 20 times at full capacity;
2. Equipped with a new type of highly reliable spring operated mechanism, the mechanical reliability can reach 60000 times;
3. Equipped with CT24 or new spring mechanism, high mechanical reliability and low maintenance workload;
4. High insulation level, able to meet both national and IEC standards simultaneously;
5. Thick steel plate integral frame with high seismic resistance.

Main technical parameters of LW36-126 outdoor high-voltage sulfur hexafluoride circuit breaker:

serial number	project	unit	Technical Parameters
one	altitude	m	1000��3000��
two	ambient temperature	��	-25��+40
three	rated voltage	kV	one hundred and twenty-six
four	rated current	A	2500 3150
five	rated frequency	Hz	fifty
six	Rated short-circuit breaking current	kA	31.5 40
seven	Rated short-circuit closing current	kA	80 100
eight	Rated short-time withstand current	kA	31.5 40
nine	Rated peak withstand current	kA	80 100
ten	Rated short-time power frequency withstand voltage	kV	Ground: 230 Between fracture surfaces: 230+73*
eleven	Rated lightning impulse withstand voltage	kV	Ground: 550 Between fracture: 550+103*
twelve	Rated short-circuit current duration	s	four
thirteen	Rated out of step breaking current	A	8 10
fourteen	Near area fault breaking current		90% 75%
fifteen	Rated line charging switching current	A	thirty-one point five
sixteen	Rated operating sequence		O-0.3s-CO-180s-CO
seventeen	SF`_six`Gas pressure (20 �� gauge pressure)	MPa	zero point six
eighteen	mechanical life	time	six thousand
nineteen	Control circuit voltage	V	DC110 or 220

LW36-126 Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker

[SF6 gas circuit breaker]LW3-12I,II outdoor high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:34:29

LW3-12 Type I and II Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker is a new type of outdoor high voltage circuit breaker that uses SF6 gas as the insulation and arc extinguishing medium. The arc extinguishing chamber adopts the principle of arc rotation, and the circuit breaker and operating mechanism are an integral structure. Compared with other 10kV outdoor circuit breakers, this product has significant advantages such as simple structure, reliable arc extinguishing and insulation performance, low operating power, high rated parameters, long electrical life and non maintenance cycle.

operating mechanism
The products are divided into two types: Type I and Type II. The Type I circuit breaker is equipped with a manual energy storage spring operating mechanism, and the A-phase and C-phase are equipped with 3-level current transformers for protection inside the body. It has three functions: manual disconnection, manual full closing, and automatic tripping and disconnection for overcurrent (or short circuit).
Type II circuit breaker electric energy storage spring operating mechanism has multiple functions such as electric energy storage, closing, opening, manual energy storage, closing and opening, and automatic tripping of overcurrent (or short circuit) (achieved by internal or external current transformers). It can not only achieve manual on-site operation but also remote control and automatic reclosing operation.

Technical parameters of LW3-12I, II type outdoor high-voltage sulfur hexafluoride circuit breaker

rated voltage	12kV	rated current	630A
Rated short-time withstand current	12.5kA,16kA	mechanical life	2000 times
Rated peak withstand current	31.5kA,50kA	Rated short-circuit breaking current	12.5kA,16kA
Number of disconnections under rated short-circuit current	20 Times	Rated working pressure	0.35Mpa

2. Usage environment
1. Environmental temperature: upper limit+40 ��, lower limit -30 ��
2. Altitude: not exceeding 3000 meters.
3. The wind pressure shall not exceed 700Pa.
4. Earthquake intensity: not exceeding 8 degrees
5. Installation site: There should be no fire, explosion hazard, chemical corrosion, or severe vibration.
6. Pollution level: Class III, Class IV
3. Product model
LW3-10��/400.630-6.3.8.12.5
The meanings represented by each section are as follows:

Technical Specifications

serial number	name		Unit	Data
one	rated voltage		KV	ten
two	Maximum operating voltage		KV	twelve
three	Rated insulation level (when the circuit breaker is filled with SF6 gas at 0.25MPa). At 20 ��)	Lightning impulse withstand full wave	KV	seventy-five
		Power frequency withstand voltage for one minute		forty-two
		Rain test with pressure resistance		thirty-four
		Reverse impact withstand voltage		eighty-five
four	Insulation current at zero gauge pressure	Power frequency withstand voltage for one minute	KV	thirty
		Reverse withstand voltage for one minute		thirty
		Maximum phase voltage for five minutes		nine
five	rated current		A	four hundred point six three zero
six	Rated short-circuit breaking current		KA	six point three	eight	twelve point five	sixteen
seven	Open and close the cross phase ground reclosing circuit		KA	five point five	seven point one	ten point nine	fourteen
eight	Breaking current under zero gauge pressure		A	four hundred point six three zero
nine	Rated operating sequence	Type I		Split -180s Split -180S Split
		Type II and III		Split -180s Split -180S Split
ten	Rated closing current (peak value)		KA	sixteen		twenty	thirty-one point five
eleven	Rated dynamic stability current (peak value)		KA	sixteen		twenty	thirty-one point five
twelve	Rated thermal stability current		KA	six point three		eight	twelve point five
thirteen	Rated thermal stability time		S	four
fourteen	Just closed speed		M/S	2.6±0.2
fifteen	instantaneous speed		M/S	2.6±0.2
sixteen	Inherent closing time	Type II and III	S	��0.06
seventeen	Inherent opening time	Type I	S	��0.06
		Type II and III		��0.04
eighteen	Rated working pressure		MPa	0.35��20�棩
nineteen	Minimum working pressure		MPa	0.25��20�棩
twenty	Annual gas leakage rate		%	less than 1
twenty-one	Mechanical stability operation		time	six thousand
twenty-two	weight	Type I	Kg	one hundred and twenty-two
		Type II		one hundred and thirty
		Type III		one hundred and thirty-two
twenty-three	Moisture content of SF6 gas		PPM	��150

LW3-12I, Type II Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker

[SF6 gas circuit breaker]LW8-40.5 Outdoor High Voltage SF6 Circuit Breaker

2026-6-10 20:34:20

The LW8-40.5 flash sulfur circuit breaker is an outdoor high-voltage switchgear suitable for three-phase AC 50Hz, 35kV power systems. It plays a control and protection role and can be used to switch rated current and fault current. It can also be used for frequent operation, capacitor level, and as a connecting circuit breaker. This circuit breaker is equipped with a CT14 type spring operated mechanism.

Technical parameters of LW8-40.5 outdoor high-voltage SF6 circuit breaker

serial number	Name		unit	Data
one	rated voltage		kV	forty point five
two	maximum voltage		kV	forty point five
three	Rated Absolute Edge level	Lightning impulse withstand voltage (full wave peak value)	kV	200 */215 (fracture) Note: Standardized 185 kV
		Power frequency withstand voltage (1 minute)	kV	95/118 (fracture surface)
four	rated current		A	1600/2000		1600/2000/2500/3150
five	mechanical life		time	five thousand
six	Rated pressure of SF6 (gauge pressure at 20 ��)		MPa	zero point four zero		zero point five zero
seven	Locking pressure (gauge pressure at 20 ��)		MPa	zero point three		zero point four zero
eight	Maximum operating environment temperature		��	-40		-30
nine	Rated short-circuit breaking current		kA	twenty	twenty-five	twenty-five	thirty-one point five
ten	Rated short-circuit closing current (peak)		kA	fifty	sixty-three	sixty-three	eighty
eleven	Rated short-time withstand current (thermal stability current)		kA	twenty	twenty-five	twenty-five	thirty-one point five
twelve	Rated peak withstand current (dynamic stability current)		kA	fifty	sixty-three	sixty-three	eighty
thirteen	Rated out of step breaking current		kA	five	six point three	six point three	eight
fourteen	Accumulated breaking times under rated short-circuit breaking current		time	twenty
fifteen	Rated short-circuit duration		S	four
sixteen	Closing time (at rated operating voltage)		S	��0.1
seventeen	Opening time (at rated operating voltage)		S	��0.06
eighteen	Rated operating sequence			Min-03s - Combination and Separation -180s - combined and separated
nineteen	Rated opening and closing current of a single capacitor bank		A	four hundred
twenty	Annual gas leakage rate		%/Year	��1
twenty-one	Moisture content of sulfur hexafluoride gas (at 20 ��)		uL/L	��150
twenty-two	Rated operating voltage for CT14 type spring operated mechanism			AC/DC:380/220V/110V
	Voltage of closing coil and opening coil		V	Communication: 220 380 DC: 48 110 220
	Energy storage motor voltage		V	Communication: 220 DC: 220/110
twenty-three	Weight of sulfur hexafluoride gas		Kg	eight
twenty-four	Weight of circuit breaker (including operating mechanism)		kg	one thousand and four hundred

Rated voltage 126kV	Rated current 3150A
Rated short-circuit breaking current 40kA	Rated short-circuit breaking current, breaking times 12 times
Mechanical lifespan (times) 3000 times	SF6 annual leakage rate �� 1%
SF6 gas weight 10kg	Net weight 1800kg

LW8-40.5 Outdoor High Voltage SF6 Circuit Breaker

[SF6 gas circuit breaker]Elevated porcelain column outdoor AC high-voltage sulfur hexafluoride circuit breaker

2026-6-10 20:34:12

LW38-40.5 (G) - CJ elevated porcelain column outdoor AC high-voltage sulfur hexafluoride circuit breaker (hereinafter referred to as the circuit breaker) is a control and protection equipment for outdoor installation, three-phase, AC 40.5kv level high-voltage transmission and transformation systems using SF6 gas as arc extinguishing and insulation medium. It can be used to split and close rated current and fault current, switch capacitor groups and conversion lines, especially suitable for frequent operation, and can also be used as a circuit breaker for interconnection.

This circuit breaker complies with the requirements of IEC "High Voltage AC Circuit Breakers" and GB1984 "High Voltage AC Circuit Breakers".

LW38-40.5 (G) - CJ Elevated Ceramic Column Outdoor AC High Voltage SF6 Circuit Breaker Model Meaning

Environmental conditions for product use
a. Environmental temperature:
Maximum temperature+40 ��
Minimum temperature -30 ��
b. Relative humidity:
Daily average relative humidity �� 90%
Monthly average relative humidity �� 95%
c. Altitude:
Normal operating conditions: altitude not exceeding 1000m (referred to as flat prototype);
Special usage conditions: altitude not exceeding 3000m (referred to as high prototype);
d. The wind speed does not exceed 34m/s (corresponding to 700Pa on the surface of the cylinder);
e. The seismic intensity shall not exceed 8 degrees (horizontal acceleration 0.25g, vertical acceleration 0.125g);
f. Air pollution level: Level IV; Minimum nominal creepage distance: 31mm/kV

LW38-40.5 (G) - CJ Elevated Ceramic Column Outdoor AC High Voltage Sulfur Hexafluoride Circuit Breaker Main Technical Parameters
1. Main technical parameters are shown in Table 1

Table 2 Main Technical Parameters of Institutions

LW38-40.5 Elevated Ceramic Column SF6 Circuit Breaker with Built in Current Transformer Dimensions (Stainless Steel Shell)

Structure Introduction
3.1 SF6 gas is used as insulation and medium, with superior breaking and insulation performance, and no fire hazard.
3.2 The arc is extinguished using a compressed air method, which is reliable in breaking and has a large breaking capacity.
3.3 The circuit breaker adopts a compact CT14-CT35 spring operated mechanism, achieving the miniaturization of 40.5kV vacuum circuit breaker products;
3.4 The circuit breaker adopts an elevated porcelain column structure, which is compact and beautiful. There are few insulation components and sealing surfaces, making it easy to control the amount of water and leakage rate.
3.5 Adopting overall packaging transportation, easy installation and operation, and low maintenance workload.
Appearance and installation dimensions of circuit breakers
4.1 Appearance and Installation Foundation Dimensions
4.2 The installation foundation of the circuit breaker shall withstand a vertical impact force of not less than 35kN
Ordering Instructions
6.1 When placing an order, please indicate the model, name, rated voltage, rated current, and rated short-circuit breaking current of the circuit breaker, as well as the model, name, energy storage motor, and opening/closing coil of the spring mechanism used
Rated voltage and rated current.
6.2 This circuit breaker can be equipped with one set of current transformers per phase, with a maximum of four secondary transformers per set. The installation of the transformers is shown in Figure 1 or can be selected by the user at their own location. Please specify the installation location when placing an order
Order the model, quantity, transformation ratio, accuracy level, and installation method of the current transformer.
6.3 If the user has other requirements, please contact our company directly.

[High voltage automatic recloser]CH20-12/630-20 Outdoor AC high voltage automatic recloser

2026-6-10 20:32:58

CH20-12/630-20 outdoor AC high-voltage automatic recloser (hereinafter referred to as recloser) is a new generation of outdoor distribution equipment developed by digesting advanced foreign technology and combining with the characteristics of China's power industry. It is a distribution device that integrates line protection, telemetry, remote control, and remote adjustment, with added functions of line relay protection, local and remote control, four remote and computer communication.

CH20-2/630-20 outdoor AC high-voltage automatic recloser is used in conjunction with ZW20 outdoor high-voltage vacuum circuit breaker to avoid power outages caused by instantaneous faults, timely cut off permanent fault lines, minimize power outages, narrow the scope and duration of power outages, and greatly improve the power supply reliability of the distribution network.

2�� Product Features
a) Power supply situation: Comes with a built-in power supply (secondary energy accumulation from CT) or an external power supply.
b) Overcurrent protection function: inverse time/timed overcurrent protection, overcurrent setting value can be set arbitrarily by the keyboard.
c) Quick break protection function: The quick termination value can be set arbitrarily by the keyboard.
d) Small current grounding protection function: timed small current grounding protection, the protection current can be set arbitrarily by the keyboard.
e) Recloser function: Multiple reclosing function, the number of recloses and reclosing interval can be set arbitrarily by the keyboard.
f) Inverse time limit function: Provides 39 inverse time limit curves, which can achieve automatic cooperation between upper and lower level stations.
g) Sequential coordination: When a fault occurs on the line in front of the recloser, prevent unnecessary actions of the lower level recloser; For faults on the lower level recloser circuit, the upper level recloser can achieve automatic fault interval isolation without disconnection.
h) The "four remote" communication function: standard RS-485 communication interface, which can be used in conjunction with related equipment to achieve remote control of wireless, wired, fiber optic, microwave, carrier, etc.

[High voltage automatic recloser]{{EN_1} Type II) - 12/T630-20 Outdoor AC High Voltage Automatic Recloser (Segmenter)

2026-6-10 20:32:49

MZZ (II) -12/T630-20 outdoor AC high voltage automatic recloser (hereinafter referred to as "recloser") is an outdoor high voltage switchgear with three-phase AC 50Hz. It is mainly used as a 10kV side outgoing switch and 10kV line protection switch in urban and rural substations, which can automatically monitor the operation status of transmission lines, accurately judge instantaneous or permanent faults, and eliminate more than 95% of instantaneous faults. This recloser is a self-contained control and protection function that can automatically perform disconnection and reclosing operations in the AC line according to the predetermined disconnection and reclosing sequence, and then automatically reset or lock afterwards. When used in conjunction with sectionalizers, it can achieve distribution automation without relying on additional control systems. This system minimizes the range and time of power outages to the greatest extent possible, and is also equipped with standard RS232, 485 communication interfaces, and four remote functions, providing strong support for the implementation of comprehensive automation in the power system.

Structural features:
1. The microcomputer control device is equipped with a set of 20 batteries, and the battery capacity can support 50 hours of operation after a power outage.
2. The battery charging adopts electronic PT, AC220V, or CT charging, which is safe and reliable.
3. The device has the function of on-site remote control switch on/off operation, with a remote control distance of 30 meters, and on-site operators do not have the difficulty of climbing power poles.
4. Provide protection setting management function, users can freely modify the tripping current, and the setting value is flexible.

MZZ (II) -12/T630-20 Outdoor AC High Voltage Automatic Recloser (Segmenter) Model Meaning

Main technical parameters of MZZ (II) -12/T630-20 outdoor AC high-voltage automatic recloser (sectionalizer)

Appearance and installation dimensions

MZZ (II) -12/T630-20 Outdoor AC High Voltage Automatic Recloser (Segmenter)

[High voltage automatic recloser]ZCW8-12 Automatic reclosing circuit breaker

2026-6-10 20:32:40

serial number	project		unit	parameter
one	rated voltage		kV	twelve
two	rated current		A	six hundred and thirty
three	Power frequency dry withstand voltage��1min��		kV	forty-two
four	Lightning impulse withstand voltage (peak value)			seventy-five
five	Rated short-circuit breaking current		kA	12.5 16 20
six	Rated short-circuit closing current			31.5 40 50
seven	Rated peak withstand current			31.5 40 50
eight	4s short-time withstand current			12.5 16 20
nine	Rated operating sequence			part-0.3s-HeFen-180s-HeFen
ten	Rated short-circuit current breaking times		time	thirty
eleven	mechanical life			ten thousand
twelve	Rated voltage of energy storage motor		V	DC or AC 220
thirteen	Rated operating voltage (with dedicated spring operating mechanism)	trip coil
		closing coil
fourteen	Rated current of overcurrent release device		A	five
fifteen	Allowable wear thickness of dynamic and static contacts		Mm	three
sixteen	weight		kg	one hundred and sixty

ZCW8-12 automatic reclosing circuit breaker

[High voltage automatic recloser]ZCH32-12 Vacuum automatic recloser

2026-6-10 20:32:31

ZCH32-12 vacuum automatic recloser

[High voltage automatic recloser]CHZ8-12 series outdoor high-pressure vacuum automatic recloser

2026-6-10 20:32:23

The CHZ8-12 series outdoor high-voltage vacuum recloser (hereinafter referred to as the recloser) is a highly intelligent switchgear used in three-phase distribution network systems with AC 50Hz and voltage 12kV. It can automatically perform disconnection and reclosing operations according to pre-set programs under different line conditions, and automatically reset afterwards. The reclosing function can set up to 3 reclosing times, freely select the number of reclosing times, and different reclosing intervals; When used in conjunction with circuit breakers, distribution automation can be achieved without relying on additional control systems. This system can quickly segment and isolate faults, minimize power outages, and is an ideal equipment for urban and rural power grid construction
In addition, the recloser can be equipped with isolation switches according to user requirements

CHZ8-12 series outdoor high-pressure vacuum automatic recloser

[High voltage automatic recloser]CHZ32-12 series outdoor high-pressure vacuum automatic recloser

2026-6-10 20:32:14

The CHZ32-12 series outdoor high-voltage vacuum recloser (hereinafter referred to as the recloser) is a highly intelligent switchgear used in three-phase distribution network systems with AC 50Hz and voltage 12kV. It can automatically perform disconnection and reclosing operations according to pre-set programs under different line conditions, and automatically reset afterwards. The reclosing function can set up to 3 reclosing times, freely select the number of reclosing times, and different reclosing intervals; When used in conjunction with circuit breakers, distribution automation can be achieved without relying on additional control systems. This system can quickly segment and isolate faults, minimize power outages, and is an ideal equipment for urban and rural power grid construction
In addition, the recloser can be equipped with isolation switches according to user requirements

[High voltage automatic recloser]CHLW3-12 outdoor high-voltage SF6 recloser

2026-6-10 20:32:05

The CHLW3-12 outdoor high-voltage SF6 recloser is the main mode of development for rural power grid substations in unmanned substations, and a simple substation composed of 12 kV automatic reclosers is the direction of rural power grid development. Its advantages are simple structure, flexibility, easy use, and strong functionality. It is a distribution automation equipment with Chinese characteristics that has been successfully developed based on the simplified substation model planned for China's rural power grid in 2000, summarizing new development trends at home and abroad.

Function characteristics of CHLW3-12 outdoor high-voltage SF6 recloser:

a�� It can automatically protect faulty lines, identify fault states, overlap, isolate, and lock faulty lines. It is a highly intelligent switchgear that integrates control, protection, measurement, and communication. It can replace general circuit breaker relay protection control devices, eliminating the need for control screens, protection screens, and central signal screens, effectively saving comprehensive investment in substations.
b�� It can automatically execute various pre-set automatic overlapping operation sequences without excessive human intervention.
c�� The use of triple reclosing can eliminate 95% of transient faults and effectively reduce the number of power outages on the line.
d�� Effectively isolate permanent fault line sections and reduce the scope of power outages.
e�� Equipped with a remote control interface, it facilitates coordination with dispatch automation to achieve remote control, remote signaling, and telemetry functions.
f�� Fully functional and flexible installation. There are various specifications and models to meet the needs of various users.
g�� The sulfur hexafluoride automatic recloser has a pressure detection function. When the pressure is lower than the set value, it will lock and issue an alarm signal.
h�� Equipped with a self controlled power supply, and the power supply, controller, and body are integrated structures, suitable for use on various circuits.

[High voltage automatic recloser]CHZW32-12 outdoor vacuum automatic recloser

2026-6-10 20:31:56

The CHZW32-12 outdoor vacuum automatic recloser integrates advanced technologies such as the latest permanent magnet mechanism and epoxy resin integral casting solid insulation process in the world, and adopts vacuum breaking technology, which has the characteristics of long electrical life, reliable breaking, and long-term complete maintenance free. The external insulation is made of imported outdoor specific epoxy resin poured as a whole, which has the advantages of UV resistance, anti flashover, and anti pollution. This product is completely oil-free, SF6 free, maintenance free, and does not pollute the environment. Adopting advanced permanent magnet mechanism, the mechanical performance is stable and reliable; And it is equipped with a manual opening and closing mechanism, which can be manually opened and closed on site if necessary. This product has many advantages such as small size, light weight, easy operation, reliable operation, no pollution, and maintenance free.

The main characteristics of CHZW32-12 outdoor vacuum automatic recloser are:
Epoxy resin solid insulation, oil-free, SF6 free, and harmless to the environment; Vacuum breaking, longitudinal magnetic field arc extinguishing, stable and reliable, imported outdoor specific epoxy resin, UV resistant, anti flashover, not easy to age; Permanent magnet operating mechanism, maintenance free, can work reliably for a long time, with a minimum service life of 10000 times or more; Compact structure, small size, light weight, easy to install and transport. The box has undergone special treatment, is rust free, and can maintain a long-lasting and beautiful appearance (stainless steel box can be selected). It adopts a highly intelligent microcomputer controller, providing multiple functions to meet various user requirements. It can be equipped with FTU to achieve remote control, monitoring, and SCADA functions.

[High voltage automatic recloser]CHZW8-12 series outdoor high-pressure vacuum automatic recloser

2026-6-10 20:31:47

The CHZW8-12 series outdoor high-voltage vacuum automatic recloser (hereinafter referred to as "recloser") is used in three-phase distribution network systems with AC 50Hz and voltage 12kV. The recloser is a high-voltage switchgear with self controlled protection function that can automatically perform opening and closing operations in the AC line according to the predetermined opening and closing sequence, and then automatically reset or lock afterwards. When used in conjunction with circuit breakers, distribution automation can be achieved without relying on additional control systems. This system can quickly segment and isolate faults, minimize power outages, and is an ideal equipment for urban and rural power grid construction. The recloser can be equipped with isolation switches according to user requirements.

Environmental conditions for the use of CHZW8-12 series outdoor high-pressure vacuum automatic recloser:
Surrounding air temperature: upper limit+40 ��, lower limit -30 ��;
Altitude: �� 1000m (if the altitude increases, the rated insulation level will correspondingly increase);
Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 34m/s);
Seismic intensity: not exceeding 8 degrees;
Pollution level: Level IV;
Maximum daily temperature difference: not exceeding 25 ��.

[High voltage automatic recloser]CHZW6-12 outdoor high-pressure vacuum automatic recloser

2026-6-10 20:31:38

The CHZW6-12 outdoor high-voltage vacuum automatic recloser (hereinafter referred to as the recloser) is a new type of recloser configured by a vacuum circuit breaker and a recloser controller. The microcomputer protection function has a three-stage current protection function of quick break, time limited quick break, and overcurrent, with flexible setting of the fast and slow characteristics of the time limit. Users can set the protection setting and delay. Backup protection setting automatic switching function, cold load start delay function The reclosing function can be set up to 3 times, with the freedom to choose the number of reclosing times and different reclosing intervals. It has the function of accelerating before reclosing, accelerating after reclosing, and coordinating in sequence. Automatically identify faults in case of malfunctions, isolate the faulty area, transfer power supply, and restore power supply to non faulty areas.

2�� Structural characteristics of CHZW6-12 outdoor high-pressure vacuum automatic recloser:
Vacuum circuit breakers are dry insulated structures, oil-free, gas free, and lightweight. Ceramic arc extinguishing chambers with good performance and strong stability are used during vacuum arc extinguishing. The recloser controller is equipped with a low-voltage opening and closing interface board, which can set parameters such as reclosing time, reset time, ampere second curve, fault setting, etc. It has complete functions, simple structure, flexible and convenient application, and comprehensive features.
Ordering Instructions:
�� Product model, name, quantity, rated current, rated short-circuit breaking current
�� Is it equipped with a current transformer? It is necessary to indicate the transformation ratio of the current transformer
�� Is it equipped with a power supply

[High voltage automatic recloser]CHZ7-12(24) Outdoor AC High Voltage Automatic Recloser

2026-6-10 20:31:30

The CHZ7-12 (24) outdoor AC high-voltage vacuum automatic recloser consists of ZW20A-12 circuit breaker and CH30 reclosing controller. It is an outdoor high-voltage distribution device with a rated voltage of 12kV and three-phase AC 50Hz.
The CHZ7-12 (24) outdoor AC high-voltage automatic recloser is suitable for protecting and controlling feeder terminals in substations, distribution lines in industrial and mining enterprises, and urban and rural power grids. It is particularly suitable for places with frequent operations and urban network automation distribution networks.

Characteristics of CHZ7-12 (24) outdoor AC high-voltage automatic recloser:
1. Ideal equipment for urban and rural power grid renovation: using current voltage time type control terminals that integrate line protection, telemetry, telemetry, remote control, remote signaling, and remote adjustment.
2. Flexible and convenient operation: This product is equipped with electric energy storage, electric opening and closing, as well as manual energy storage, manual opening and closing, and can be operated at close or long distances.
3. Superior breaking performance: breaking short-circuit current of 25kA for up to 30 times.
4. Low operating power and high reliability: The newly designed small electric spring mechanism reduces the operating power (about 30W) to the lowest level.
5. Flexible installation method: Column mounted lifting or sitting installation can be used.
6. Reliable sealing performance: Sf6 has zero gauge pressure and adopts mature sealing structure technology, which ensures reliable sealing performance and is not prone to leakage.
7. Unique incoming and outgoing wiring method: using silicone rubber sleeves to ensure sufficient insulation distance between terminal blocks and excellent external insulation characteristics.
8. Safety of use: Explosion proof devices are installed at the top of the box, so even in the event of an unexpected internal failure, there will be no leakage of high-temperature gases or splashes.

[High voltage automatic recloser]CHZ��-12 High pressure vacuum automatic recloser

2026-6-10 20:31:21

The CHZ �� -12 high-voltage vacuum automatic recloser (hereinafter referred to as the recloser) is used in three-phase power systems with AC 50HZ and voltage of 10-20KV. This recloser is a high-voltage switchgear with self controlled protection function that can automatically perform disconnection and reclosing operations in the AC line according to the predetermined disconnection and reclosing sequence, and then automatically reset or lock afterwards. When used in conjunction with circuit breakers, it can achieve distribution automation without relying on additional control systems. This system can quickly segment and isolate faults, minimizing the scope of power outages. It is an ideal equipment for urban and rural power grid transformation. The recloser can be equipped with isolation switches according to user requirements.

[Outdoor vacuum circuit breaker]ZW82-35 outdoor single-phase high-voltage vacuum circuit breaker

2026-6-10 20:10:00

ZW82-35 outdoor single-phase high-voltage vacuum circuit breaker is suitable for 35KV substations or urban distribution stations and industrial electrical equipment with terminal power supply, for protection control and short-circuit protection. Due to the protective effect of outdoor high-voltage vacuum circuit breakers on electrical equipment such as transformers, they can control line breaking, overload, and surge current Effectively protect transformers, electrical equipment, and power lines. More reliable, more economical, especially suitable for urban and rural power grid systems and power grid renovation. ZW82-35 is mainly used for breaking and closing load current, overload current, and short-circuit current in power systems. Suitable for protection and control in substations and distribution systems of industrial and mining enterprises, as well as places with frequent operation of rural power grids. Jiaji Electric specializes in producing this installation and use manual, which specifies the main requirements for circuit breakers

Technical parameters, product structure, principles and methods of operation, installation, use and maintenance of ZW82-35 outdoor single-phase high-voltage vacuum circuit breaker.

The ZW82-35 outdoor single-phase high-voltage vacuum circuit breaker is based on the ZW7-40.5 and removes the BC two phases. It is used as a special area for switching power supply and has an unparalleled price advantage compared to the ZW7

Structural characteristics of ZW82-40.5
�� The circuit breaker consists of a phase support and a mechanism box, with a simple and clear structure. The phase support and current transformer are made of outdoor materials
Epoxy tree solid or silicone rubber insulation has the advantages of high and low temperature resistance, UV resistance, aging resistance, etc; Adopting a miniaturized spring operated mechanism, the energy consumption for opening and closing is low. The transmission output of the mechanism adopts a spindle sliding mode, with no torque loss, fewer opening and closing transmission components, and high reliability
�� The current transformer is installed on the outgoing line of the moving end, and the secondary adopts a plug-in structure for easy maintenance and replacement.
�� The high-voltage vacuum circuit breaker equipped with a vacuum arc chamber has stable and reliable breaking performance. It is professionally produced by Jiaji Electric and has the characteristics of no combustion, safety, maintenance free, small size, light weight (<420kg), and long service life.
�� The circuit breaker adopts a fully enclosed structure with good sealing performance, moisture-proof and anti condensation properties, suitable for high temperature and humid areas
Use it.
�� The closing and opening of circuit breakers can be manually or electrically operated, as well as remotely operated. It can be matched with a controller to achieve distribution automation,
It can also be combined with a coincidence controller to form a coincidence device.
�� The operating mechanism is novel, simple, reliable in action, small in size, and has a mechanical lifespan of up to 10000 times.
�� The installation method of circuit breakers can be single pole or double pole mounting.
ZW82-40.5/630-20
ZW82-40.5/630-25
ZW82-40.5/1000-20
ZW82-40.51000-25
ZW82-40.5/1250-20
ZW82-40.5/1250-25
ZW82-40.5/1250-31.5
ZW82-40.5/1600-31.5

[Outdoor vacuum circuit breaker]ZW110-40.5 Sealed permanent magnet high-voltage vacuum circuit breaker

2026-6-10 20:09:51

ZW110-40.5 Sealed Permanent Magnet High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW8J-12 Integrated metering high-voltage circuit breaker

2026-6-10 20:09:39

ZW8J-12 Integrated Metering High Voltage Circuit Breaker

[Outdoor vacuum circuit breaker]JZW32-12 Measuring vacuum circuit breaker with protection

2026-6-10 20:09:30

JZW32-12 metering vacuum circuit breaker with protection

[Outdoor vacuum circuit breaker]BV-3S-12(AB-3S-12) Intelligent three-phase fast permanent magnet circuit breaker

2026-6-10 20:09:22

BV-3S-12 (AB-3S-12) intelligent three-phase fast permanent magnet circuit breaker

[Outdoor vacuum circuit breaker]ZW8-12F with metering intelligent boundary switch

2026-6-10 20:09:13

ZW8-12F with metering intelligent boundary switch

[Outdoor vacuum circuit breaker]JZW43-12 Measuring vacuum circuit breaker with protection

2026-6-10 20:09:04

JZW43-12 metering vacuum circuit breaker with protection

[Outdoor vacuum circuit breaker]ZWB-12/T630-20 Outdoor high-voltage vacuum circuit breaker

2026-6-10 20:08:56

ZWB-12/T630-20 outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is used in power systems with AC voltage ranging from 50Hz to 12Kv. It is used for breaking, closing load current, overload current, and short-circuit current. When the circuit breaker is combined with isolation contact blades (hereinafter referred to as the combination circuit breaker), it can also be used as a section switch.

Normal usage conditions
1. Surrounding air temperature: upper limit+40 ��, lower limit -40 ��
2. Altitude: not exceeding 1000m
3. Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 34m/s)
4. Seismic intensity: no frequent severe vibration, seismic intensity not exceeding level 8
5. Pollution level: not exceeding level III in GB/T 5582

Main technical parameters of ZWB-12/T630-20 outdoor high-voltage vacuum circuit breaker

serial number	name				unit	data
one	rated voltage				KV	twelve
two	Rated insulation level	1-minute power frequency withstand voltage		Dry test		forty-two
				wet test		thirty-four
		Lightning impulse withstand voltage				seventy-five
three	rated current				A	six hundred and thirty
four	Rated short-circuit breaking current				KA	twenty
five	Rated short-circuit breaking current times				time	thirty
six	Rated short-circuit closing current (peak)				KA	fifty
seven	Rated peak withstand current
eight	Rated short-time withstand current					twenty
nine	Rated short-circuit duration				s	four
ten	Rated operating sequence (electric operation)					Split -0.3s - Split -180s - Split
eleven	Opening time (excitation trip)		Maximum operating voltage		Ms	15~50
			Rated operating voltage
			Minimum operating voltage			30~60
twelve	closing time					25~50
thirteen	Total breaking time					��100
fourteen	arcing time					��20
fifteen	mechanical life				time	ten thousand
sixteen	Closing power				J	seventy
seventeen	Input power of energy storage motor				W	��250
eighteen	Rated operating voltage and rated voltage of auxiliary circuit				V	DC220
						AC220
nineteen	Energy storage time at rated voltage				S	��10
twenty	over-current release	rated current			A	five
		Accuracy of tripping current			%	±10

[Outdoor vacuum circuit breaker]ZW32-12F Outdoor high-voltage intelligent boundary vacuum circuit breaker (watchdog)

2026-6-10 20:08:47

ZW32-12F Outdoor High Voltage Intelligent Boundary Vacuum Circuit Breaker (Watchdog)

[Outdoor vacuum circuit breaker]LW58-252/T4000-50 High voltage sulfur hexafluoride circuit breaker

2026-6-10 20:08:37

The arc extinguishing chamber of LW58-252/T4000-50 high-voltage sulfur hexafluoride circuit breaker adopts a self powered pressurized pneumatic double action structure, which has more stable breaking performance;
Small operating power, high product reliability, mechanical lifespan of 6000 (10000) times;
The dynamic and static arc contacts adopt a copper tungsten integral sintered structure, which is resistant to high temperatures and has minimal burning loss under the action of the arc. It can be fully opened and closed 20 times at full capacity;
Reliable sealing performance: SF6 annual leakage rate is far less than 0.5%;
Strict dehumidification process for product components: SF6 moisture content is much lower than similar products;
External insulation creepage distance �� 31mm/KV, strong stain resistance;
The arc extinguishing chamber valve plate is made of special zinc based alloy, which is heat-resistant, lightweight, and has stable and reliable breaking performance;
The nozzle is made of imported polytetrafluoroethylene and special materials, with high electrical strength, burn resistance, no deformation, and good creep resistance;
The secondary circuit electrical components and SF6 density controller are made of high-quality imported or joint venture manufacturer products;
Important components within the organization are forged from high-quality alloy steel, which has high strength, wear resistance, and can ensure frequent operation of circuit breakers with low failure rates.

		kA	fifty
seven	Rated short-circuit closing current (peak)		one hundred and twenty-five
eight	Rated short-time withstand current		fifty
nine	Rated peak withstand current		one hundred and twenty-five
ten	Rated as out of step breaking current		twelve point five
eleven	Near area fault breaking current			90%IK,75%IK
twelve	Rated short-circuit breaking current times		time	twenty
thirteen	Rated short-circuit duration		s	three
fourteen	Initial polar coefficient			one point three
fifteen	Rated line charging switching current		A	two hundred
sixteen	Rated operating sequence			O-0.3S-CO-180S-CO
seventeen	rated pressure		MPa	zero point six zero
eighteen	Leakage rate of sulfur hexafluoride gas		%	��0.5
nineteen	Gas moisture content		��L/L	��150×10^-6
twenty	mechanical life		time	6000(10000)
twenty-one	Opening time		ms	��35
twenty-two	closing time		ms	��100
twenty-three	creepage distance		fracture	mm	��8660
			to the ground		��6400
twenty-four	Weight of sulfur hexafluoride gas per phase		kg	eight
twenty-five	Weight of each phase circuit breaker			one thousand and eight hundred

2) Main Technical Parameters Table of the Institution
serial number	name		unit	data
one	energy storage motor	rated voltage	V	DC220/AC220
		Normal operating voltage range	V	85%~110%
		power	W	seven hundred and twenty
two	Motor energy storage time		S	��20
three	Voltage/current of opening and closing coils		V/A	DC110V/4��DC220V/2.5
four	auxiliary switch	rated current	A	10 (DC220V)
four	auxiliary switch	Grounding number of auxiliary switch	Correct	11/11
five	limit switch	rated current	A	5 (DC220V)
five	limit switch	Connection points: normally open/normally closed	Correct	2/2
six	Heating and lighting circuit voltage		V	AC220
seven	mechanical life		Time1	6000(10000)

3) Mechanical adjustment parameters of the product
serial number	name	unit	data
one	Center distance between circuit breaker poles	mm	3000~4000
two	Opening time	ms	��35
three	closing time		��100
four	Cut off time		��60
five	Split time		seventy
six	Opening and closing time		three hundred
seven	Three pole asynchronous tripping		��3
eight	Three pole closing asynchrony		��4

LW58-252/T4000-50 High Voltage Sulfur Hexafluoride Circuit Breaker

[Outdoor vacuum circuit breaker]ZW10-12G/T630-12.5/16/20 Outdoor High Voltage Vacuum Circuit Breaker

2026-6-10 20:08:29

ZW10-12G/T630-12.5/16/20 outdoor high-voltage vacuum circuit breaker is mainly used for power distribution systems in rural, urban, mining, railway, and port areas with a rated current of 630A and a rated frequency of 50HZ at a voltage level of 12KV. It is particularly suitable for outdoor overhead lines to switch and protect the power grid by handling load current, overload current, and short-circuit current.
2�� This product is suitable for the following working conditions:
a. Environmental temperature -40 ��~+40 ��
b. Altitude not exceeding 2000mm, negotiate with users above 2000mm
c. Wind pressure not exceeding 700Pa (equivalent to a wind speed of 34m/s)
d. The daily average relative humidity should not exceed 95%, and the monthly average should not exceed 90%
e. Air pollution level III
f. The surrounding air should not be significantly polluted by corrosive or flammable gases
g. No frequent vigorous exercise
h. Silicone rubber used as an insulating medium should comply with the requirements of GB655386 for specific usage scenarios

ZW10-12G/T630-12.5/16/20 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW20Z Outdoor high-voltage vacuum circuit breaker

2026-6-10 20:08:20

ZW20Z Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW2-27.5 Outdoor single-stage railway switch

2026-6-10 20:08:11

ZW2-27.5 outdoor single-stage railway switch circuit breaker has a rated voltage of 27.5kV and an AC frequency of 50Hz. It is specifically designed for use in electrified railway direct supply systems for load switching and fault current breaking, and is suitable for places with frequent operation.

[Outdoor vacuum circuit breaker]ZW2-55/27.5 Outdoor dual level railway switch

2026-6-10 20:08:02

ZW2-55/27.5 outdoor dual stage railway switch has a rated voltage of 27.5kV, 55/27.5kV, and an AC frequency of 50Hz. This circuit breaker is specifically designed for use in the AT power supply system of electrified railways to open and close loads and disconnect fault currents, especially in places with frequent operation.

[Outdoor vacuum circuit breaker]Outdoor high-voltage permanent magnet vacuum circuit breaker

2026-6-10 20:07:53

MZZ (1) -12/M630-20 outdoor high-voltage permanent magnet vacuum circuit breaker (recloser/sectionalizer) is an outdoor high-voltage distribution device with three-phase AC 50HZ, rated voltage 12V, rated current 630A-1250A, and short-circuit current 16KA-20KA. Mainly used for breaking and closing load current, overload current, and short-circuit current in power systems. Suitable for protection and control in power distribution systems of industrial and mining enterprises, and more suitable for rural power grids and places with frequent operations. This product retains all reasonable parts and excellent performance of the original ZW32 structure, and also increases the overall mechanical life of the arc extinguishing chamber by several times compared to the original mechanical life, with a lifespan of up to 60000 times and 30000 times without maintenance during the service life. It can be easily expanded to form reclosers and segmenters, which are used to distinguish between permanent and temporary faults. At the same time, the powerful control function of the permanent magnet mechanism controller can be utilized to achieve various networking, protection, and operation functions according to customer requirements.

Structural characteristics of MZZ (1) -12/M630-20 outdoor high-voltage permanent magnet vacuum circuit breaker:
1. The microcomputer control device is equipped with a set of 20 batteries, and the battery capacity can support 50 hours of operation after a power outage.
2. The battery charging adopts electronic PT, AC220V, or CT charging, which is safe and reliable.
3. The device has the function of on-site remote control switch on/off operation, with a remote control distance of 30 meters, and on-site operators do not have the difficulty of climbing power poles.
4. Provide protection setting management function, users can freely modify the tripping current, and the setting value is flexible.

MZZ (1) -12/M630-20 outdoor high-voltage permanent magnet vacuum circuit breaker model meaning

Technical parameters of MZZ (1) -12/M630-20 outdoor high-voltage permanent magnet vacuum circuit breaker

External dimensions and installation dimensions

[Outdoor vacuum circuit breaker]MZZ30-40.5/1600-31.5 Outdoor high-voltage vacuum circuit breaker

2026-6-10 20:07:44

The MZZ30-40.5 series outdoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz outdoor high-voltage electrical equipment with a rated voltage of 40.5kV. Equipped with a spring operated mechanism or an electromagnetic operated mechanism, it can remotely control electric opening and closing, or manually store energy and manually open and close on site. The design performance meets the requirements of the national standard GB1984-89 "AC High Voltage Circuit Breaker" and the requirements of the International Electrotechnical Commission standard IEC-56 "AC High Voltage Circuit Breaker".

Structural features:
The MZZ30-40.5 series outdoor high-voltage vacuum circuit breaker is mainly used for control and protection of outdoor 40.5kV power transmission and transformation systems, as well as for normal operation and short-circuit protection of urban and rural distribution networks and industrial and mining enterprises. The overall structure of this product is a porcelain bottle pillar type; The upper porcelain bottle is equipped with a vacuum arc extinguishing chamber, and the lower porcelain bottle is a pillar porcelain bottle. Suitable for places with frequent operations. It has the characteristics of good sealing, aging resistance, high pressure resistance, non combustion, no explosion, long service life, convenient installation and maintenance, etc.

MZZ30-40.5/1600-31.5 Outdoor High Voltage Vacuum Circuit Breaker Model Meaning

Main characteristics and environmental conditions for use
Surrounding air temperature: upper limit+40 ��, lower limit -30 �� (general areas), -40 �� (high-altitude areas);
Altitude: �� 1000m (if altitude needs to be increased, the rated insulation level should be correspondingly increased);
Wind pressure: not exceeding 700pa (equivalent to a wind speed of 34m/s);
Amplitude: The seismic intensity does not exceed 8 degrees;
Pollution level: Level III;
Maximum temperature difference: not exceeding 25 ��.

MZZ30-40.5/1600-31.5 Outdoor High Voltage Vacuum Circuit Breaker Main Technical Parameters

Appearance and installation dimensions

MZZ30-40.5/1600-31.5 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]Outdoor pole mounted high-voltage vacuum circuit breaker

2026-6-10 20:07:34

MZZ10-12/T630-20 outdoor column mounted vacuum circuit breaker is an outdoor distribution equipment with a rated voltage of 12kV and three-phase AC 50Hz. It is mainly used for breaking and closing load current, overload current, and short-circuit current in power systems. Suitable for protection and control in substations and industrial and mining distribution systems, and more suitable for urban, rural, and frequently operated places. This product, when combined with a controller, can meet the requirements of distribution automation systems and reliably and effectively perform traditional recloser functions.

MZZ10-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker model meaning

Main technical parameters of MZZ10-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker

MZZ10-12/T630-20 Outdoor Column High Voltage Vacuum Circuit Breaker Appearance and Installation Dimensions

MZZ10-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker

[Outdoor vacuum circuit breaker]Outdoor pole mounted high-voltage vacuum circuit breaker

2026-6-10 20:07:25

MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker is an outdoor high-voltage distribution device with three-phase AC 50Hz, rated current 630A~1250A, and short-circuit current 16kA~20kA. Mainly used for breaking and closing load current, overload current, and short-circuit current in power systems. Suitable for protection and control in power distribution systems of industrial and mining enterprises, and more suitable for rural power grids and places with frequent operations. This product retains all reasonable parts and excellent performance of the original ZW32 structure, and also increases the overall mechanical life of the product, including the arc extinguishing chamber, by several times compared to the original model, with a lifespan of up to 60000 times and 30000 times without maintenance during the service life.

Structural characteristics of MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker:
1. Surrounding air temperature: -40 ��~+55 ��, daily temperature difference: daily variation of 25 ��;
2. Altitude: not exceeding 2000 meters;
3. Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 35m/s);
4. No frequent severe vibrations, earthquake intensity not exceeding 8 degrees;
5. Places without strong corrosive gases or media (such as various acids, alkalis, thick smoke, etc.);
6. Anti pollution ability level IV.

MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker model meaning

Main technical parameters of MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker

Appearance and installation dimensions

MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker

[Outdoor vacuum circuit breaker]ZW8G-12 Plateau type permanent magnet outdoor high-voltage vacuum circuit breaker with remote control

2026-6-10 20:07:16

ZW8G-12 plateau type permanent magnet with remote control is used for three-phase power systems with AC 50Hz and voltage of 10-12kV. It is used for breaking and closing load currents, and has overload and short circuit protection functions. It can also be equipped according to user needs

Install surge current delay protectors and install lightning arresters or isolating switches, such as circuit breakers and isolating switches.

ZW8G-12 High Altitude Permanent Magnet Outdoor High Voltage Vacuum Circuit Breaker with Remote Control Main Technical Parameters

Number Project Unit Data
Rated voltage KV 12
2 rated insulation level, 1-minute working rated withstand voltage, dry test, 42 wet test, 34 lightning impulse withstand voltage (peak value), 75
3 rated insulation level A 630; 400�� two hundred
4 rated short-circuit breaking current kA 20; 16��12.5
The rated operating sequence is divided into -0.3s, -180s, and -180s
6 rated short-circuit breaking times 30 times
7 rated short-circuit closing current (peak) kA 50
8 rated peak withstand current
9 rated short-time withstand current 20
10 rated short-circuit continuous current s 4
11 Opening time (excitation trip) Maximum operating voltage MS 15~50 Rated operating voltage Minimum operating voltage 30~60
12 closing time 25~50
13 fully open and open time �� 100
14 arc time �� 20
15 mechanical life cycles 10000
16 closing power J 70
17. Rated input power of energy storage motor W �� 250
18 rated operating voltage and rated voltage of auxiliary circuit V DC220, 110, 24 AC220, 110, 24
19. Energy storage time under rated voltage s<10
20 overcurrent release rated current A 5 tripping current accuracy% ± 10

[Outdoor vacuum circuit breaker]ZWP-24KV Solid sealed pole type vacuum high-voltage circuit breaker

2026-6-10 20:07:07

ZW �� -24 outdoor high-voltage AC vacuum circuit breaker is an outdoor switch equipment with three-phase AC 50Hz and rated voltage of 24kV. It is suitable for opening and closing various types of loads and frequent operating situations, and is suitable for the construction and renovation of power equipment in urban networks, rural networks, mines, railways, etc. This product is the earliest developed 24kV outdoor high-voltage switchgear suitable for China's national conditions, based on absorbing advanced foreign technology and domestic raw materials and processes. It has its own intellectual property rights and multiple patented technologies, filling the gap in domestic 24kV voltage level outdoor switchgear. Compared with similar international products, it has the characteristics of miniaturization, maintenance free, and intelligence. At the same time, this product has no pollution to the surrounding environment and is a green and environmentally friendly product.

Product features
The shell is made of high-quality stainless steel material or ordinary steel plate treated with Dacromet anti rust technology and then sprayed with UV resistant varnish. The product has excellent environmental resistance such as corrosion resistance and salt spray resistance.
The insulation part adopts epoxy resin and silicone rubber composite insulation material, with high insulation level, strong anti pollution ability, ozone resistance, UV resistance, hydrophobicity, and high and low temperature resistance. There is no transformer oil or sulfur hexafluoride gas inside the box, which meets the requirements of oil-free transformation and environmental protection.
The operating mechanism is a spring operated mechanism, which can be manual or electric. If necessary, a remote control device and a surge avoidance device can be installed to avoid closing. The required external power supply power should not exceed 70W, making it easy to equip with a backup power supply. Design a unique buffering device with excellent performance, minimal rebound, and low noise.
The arc extinguishing chamber adopts special stainless steel brazing technology, which does not require electroplating, has high welding quality, stability and reliability, and low air leakage rate. Special ceramic metallization formula and advanced ceramic metallization technology are used in the production process to ensure the airtightness of the product, with a tensile strength greater than 130Mpa and complete one-time sealing.
The 5 current transformers are made of high-quality magnetic materials and epoxy resin and silicone rubber composite insulation, with advantages such as large capacity, high dynamic and thermal stability multiple, high precision level, maintenance free, and high reliability.
According to user needs, it can be combined with corresponding controllers to form automatic reclosers and segmenters, which are ideal equipment for achieving distribution network automation.

Normal usage conditions
Surrounding air temperature:+40 ��~-40 �� Daily temperature difference: 25K
B wind speed not exceeding 35m/s
c�� The protection level of the chassis is IP64
d�� Consider condensation and precipitation
e�� Earthquake intensity not exceeding level 8
f�� The solar radiation intensity does not exceed 1000W/�O (equivalent to 700Pa on a cylindrical surface)
h�� Any requirements beyond these technical specifications shall be agreed upon by the user and the manufacturer.
Number Name Unit Value
Rated voltage kV 24
Rated current A 630/1250
3 rated frequency Hz 50
4 rated thermal stability current A 420/25k
5 rated short-circuit breaking current
A 520/25k
6 rated dynamic stability current (peak) A 650/63k
7 rated short-circuit closing current (peak) kA 50/63
8 Thermal stability time S 4
9 Rated operating sequence S SO-0.3s-CO-180s-C
10 rated insulation level, 1-minute power frequency withstand voltage, phase to phase, ground/fracture kV 50/65
Rated lightning impulse withstand voltage (peak) phase to phase, ground/fracture 95/125
Secondary circuit 1-minute power frequency withstand voltage 2
11 mechanical life cycles 10000
12 rated short-circuit breaking current breaking times 30
13 rated current breaking times 10000
Table 2 Rated Parameters of Operating Mechanism
Number Name Unit Value
1. Rated power of energy storage motor W �� 70
2. Closing time for energy storage
S ��8
3. Working voltage of energy storage motor V AC220 110
DC24 110 220
4. Closing coil tripping voltage V AC220 110
DC24 110 220
5-strip coil tripping voltage V AC220 110
DC24 110 220
6 overcurrent coil trip current A 5
Table 3 Mechanical characteristic adjustment parameters of circuit breakers
Number Name Unit Value
1 contact opening distance mm 12 ± 1
2 overtravel 3 ± 1
3-phase center distance 380 ± 1.5
4. Non synchronous opening and closing of three-phase, ms �� 2
5 contact closing bounce time �� 2
6 Closing time 25-80
7 opening time 23-50
8. Average opening speed m/s 1.1-1.7
9. Average closing speed 0.5~0.9
The resistance of the main electrical circuit is 10 �� 100

ZWP-24KV/630 (1250) -20 (25) solid sealed pole vacuum circuit breaker

[Outdoor vacuum circuit breaker]ZW32P-12 type outdoor prepaid metering vacuum circuit breaker

2026-6-10 20:06:58

ZW32P-12 outdoor prepaid metering vacuum circuit breaker is a three-phase AC 50Hz, rated voltage 12kV outdoor vacuum circuit breaker and metering integrated switchgear. It is matched with a three-phase multifunctional meter to realize the opening and closing of load current, overload current, and short-circuit current in the distribution system. It also has a high-precision high-voltage metering device to achieve all metering, calculation and accounting functions of active energy meter, reactive energy meter, active demand meter, power factor meter, prepaid meter, and multiple rate meter. It can also flexibly preset multifunctional overload alarms, automatic power outages, phase loss alarms, recording, and automatic meter reading. Using international standard IC card RS485 interface, infrared communication, large screen LCD display technology, flexible preset of multiple functions, and IC card or handheld computer as a medium to achieve information transmission between users and power supply department computers. The power department can choose one or more transmission methods based on local conditions to facilitate computer network management and meet the needs of modern and scientific management for users in an effective and timely manner.

ZW32P-12 outdoor prepaid metering vacuum circuit breaker complies with national standards GB1984-2003, GB/T17215-2002, GB17201-1997; The product comes with an operating power supply, which can reliably provide power for operation, signal, and alarm systems.
Usage environment
Altitude: not exceeding 1000 meters (exceeding is considered high prototype)
Surrounding air temperature: -45 ��~+40 ��
Relative temperature: daily average not exceeding 95%, monthly average not exceeding 90%
Wind speed: not exceeding 35m/s
No flammable, explosive hazard, chemical corrosion, or severe vibration site.
Pollution level: III

[Outdoor vacuum circuit breaker]ZW32-17.5 type permanent magnet vacuum circuit breaker

2026-6-10 20:06:49

The ZW32-17.5 permanent magnet vacuum circuit breaker adopts a unique design and high reliability permanent magnet mechanism. This circuit breaker is mainly used in the 17.5kV medium voltage overhead power grid as a means of breaking and closing load currents, overload currents, and short-circuit currents; Suitable for the construction and renovation of power equipment in urban and rural power grids, mines, and railways. ZW32-17.5 permanent magnet vacuum circuit breaker complies with the national standard GB1984 "High Voltage AC Circuit Breaker". According to the International Electrotechnical Commission standard IEC62271-100, within the technical parameter range and normal use conditions of circuit breakers, they can meet various operations of the power grid under normal or accident conditions, including making and breaking short-circuit currents.

Terms of Use
1. Normal usage conditions
a) The ambient air temperature shall not exceed 40 ��, and the average value measured within 24 hours shall not exceed 35 ��, with a minimum ambient air temperature of -40 ��;
b) Altitude: not exceeding 2000m;
c) The surrounding air can be polluted by dust, smoke, corrosive gases, steam, or salt spray, with a pollution level of IV;
d) Wind speed not exceeding 34m/s;
e) Vibration or ground motion from outside the switchgear and control equipment can be ignored.
2 Special usage conditions
If the above normal usage conditions are not met, the user needs to negotiate with the manufacturer to reach a consensus.

Technical characteristics of ZW32-17.5 permanent magnet vacuum circuit breaker
The product design complies with national standards such as GB1984-2003, power industry standards, and International Electrotechnical Commission standards such as IEC62271-100.
2. Compact structure, lightweight design, with a minimum phase spacing of 280mm, easy to install.
The permanent magnet mechanism of the 3 products has a high lifespan of over 50000 cycles, making it particularly suitable for situations that require high mechanical lifespan and frequent operation. Maintenance free throughout the entire product lifespan
The specially designed permanent magnet mechanism has undergone theoretical calculations and multiple verifications and improvements through advanced software, and its output characteristics can well meet the requirements of vacuum arc chamber opening and closing.
The primary conductive part of the product adopts a fixed sealed pole design, with the inside of the fixed sealed pole made of epoxy resin and the outside made of silicone rubber. It has high insulation strength and also has good resistance to outdoor environments. It can resist aging, corrosion and ultraviolet rays, and is suitable for use in various outdoor environment conditions.
The shell is designed with full stainless steel or coated with outdoor paint. Can ensure long-term use outdoors without rusting.
7 products can be equipped with zero sequence current transformers to form ground fault protection in conjunction with the controller.
The 8 products are equipped with voltage sensors that can monitor the voltage of each pole and achieve zero sequence voltage detection to determine the direction of grounding faults.
9 companies have years of experience in designing and producing permanent magnet mechanisms and permanent magnet controllers, and possess core technologies in controllers and mechanisms. Can achieve perfect coordination between the mechanism and the controller.

Main technical parameters of ZW32-17.5 permanent magnet vacuum circuit breaker
The main technical parameters of the product are shown in Table 1.
Rated voltage kV 17.5
Rated insulation level 1 minute power frequency withstand voltage 42
Lightning impulse withstand voltage 75
3 rated frequency Hz 50
4 Rated current A 630 1250 1600 2000 2500 3150 4000
5 rated short-time withstand current kA 20, 25, 31.5, 40
6 rated peak withstand current 50, 63, 80, 100
7 rated short-circuit duration s 4
Rated power supply voltage V AV/DC 220 for 8-turn on/off devices and auxiliary circuits
9 rated short-circuit breaking current kA 20, 25, 31.5, 40
10 rated short-circuit closing current kA 50, 63, 80, 100
11 Rated operating sequence O-0.3s-CO-180s-CO
12 electric life E2 level
13 mechanical life cycles M2 level (50000)

[Outdoor vacuum circuit breaker]ZW7B-40.5 series outdoor high-voltage vacuum circuit breaker

2026-6-10 20:06:41

I. Overview
The ZW7B-40.5 series outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the "circuit breaker") is used in three-phase power systems with AC 50Hz and 40.5kV for the purpose of opening and closing load currents, overload currents, and short-circuit currents.

The ZW7B-40.5 series outdoor high-voltage vacuum circuit breaker meets the requirements of the national standard GBl984.2003 "AC High Voltage Circuit Breaker" and the International Electrotechnical Commission standard IEC56 "High Voltage AC Circuit Breaker".
The ZW7B-40.5 series outdoor high-voltage vacuum circuit breaker should meet the following environmental conditions when used:

Surrounding air temperature: upper limit+40 degrees, lower limit -40 degrees;
b. Altitude: �� 1000m (when exceeding 1000m, adjust electrical parameters according to the corresponding altitude coefficient;
c. Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 34m/s);
d. Seismic intensity: not exceeding 8 degrees;
e. Pollution level: Level III (anti pollution type up to Level IV).

[Outdoor vacuum circuit breaker]ZW51-12/D series outdoor pole mounted AC high-voltage vacuum circuit breaker

2026-6-10 20:06:32

I. Overview
ZW51-12/D series outdoor pole mounted AC high-voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is a three-phase AC 50Hz outdoor distribution equipment with a rated voltage of 12kV. It is mainly used for breaking and closing load current, overload current, and short-circuit current in three-phase power systems. The product complies with the standard GBl984-2003 "AC High Voltage Circuit Breaker".

2�� ZW51-12/D series outdoor pole mounted AC high-voltage vacuum circuit breaker model and meaning
1. Surrounding air temperature: upper limit+40 ��, lower limit -30 degrees (general areas), -40 degrees (high-altitude areas)
2. Altitude: �� 1000m (if altitude i is too high, the rated insulation level will be correspondingly increased);
3. Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 34m/s);
4. Earthquake intensity: not exceeding 8 degrees;
5. Pollution level: Level IV;
6. Maximum daily temperature difference: not exceeding 25 degrees.

3�� Functional Features
The ZW51-12/D series outdoor column mounted AC high-voltage vacuum circuit breaker adopts outdoor epoxy casting technology, which integrates the vacuum arc extinguishing chamber and current transformer into an integrated solid insulation maintenance free phase column component, which is oil-free, gas free, and pollution-free.
2. Vertical phase separation layout, easy to install and adjust.
3. All stainless steel shell, no worries of corrosion.
4. Equipped with a permanent magnet actuator to meet the requirements of different occasions.
5. Equipped with an electronic control unit, it becomes an intelligent circuit breaker that can achieve "four remote" monitoring.
6. CT power supply, PT power supply, solar power supply, multiple power supply methods, safe and reliable.

ZW51-12/D series outdoor pole mounted AC high-voltage vacuum circuit breaker

[Outdoor vacuum circuit breaker]ZW20-12F Outdoor User Boundary Vacuum Circuit Breaker

2026-6-10 20:06:21

ZW20F-12/T630-20 high-voltage outdoor boundary vacuum circuit breaker is a user boundary switch independently developed by our company. It mainly consists of three parts: ZW20F-12 outdoor vacuum circuit breaker body, "type controller", and external power supply. The three are connected through control cables and have automatic fault detection, protection control, and communication functions. It can reliably detect short circuits, overcurrent, and single-phase grounding faults in the internal and external lines, and automatically relieve faulty lines and equipment.
ZW20F-12/T630-20 high-voltage outdoor boundary vacuum circuit breaker is an outdoor distribution equipment with a rated voltage of 12KV three-phase AC 50HZ. It adopts vacuum breaking and arc extinguishing and SFS gas insulation medium. The box adopts Toshiba's sealing, explosion-proof, and insulation technology, and is filled with zero pressure SFS gas inside, without leakage or external influence. This circuit breaker is a maintenance free, high-performance, and highly reliable new generation vacuum circuit breaker.
ZW20F-12/T630-20 high-voltage outdoor boundary vacuum circuit breaker is mainly used for power lines of 12KV and below,. As a function of line quick break protection, overcurrent protection, grounding protection, disconnection and closing of lines, it is suitable for power grid lines with neutral points not grounded, neutral points grounded through arc suppression coils, and neutral points grounded through low resistance.

Usage environment:
Environmental temperature: -40 �� -40 ��
Altitude: 1000m. For use in high-altitude areas, the external insulation performance needs to be improved
Wind speed: not exceeding 35m/s
Ice covered: Level 10

ZW20-22F Outdoor User Boundary Vacuum Circuit Breaker Technical Parameters

Composition of Control and Protection System

[Outdoor vacuum circuit breaker]ZW32M-12 type permanent magnet mechanism intelligent vacuum circuit breaker

2026-6-10 20:06:12

ZW32M-12 permanent magnet mechanism intelligent vacuum circuit breaker, (user boundary, branch switch)

Overview
New problems faced by the distribution network:
1. The failure rate of branch lines has significantly increased after the improvement of the main line;
2. Due to the failure of a single user on the branch line and improper protection coordination, the entire feeder line is affected by power outages and liability disputes arise;
3. The grounding selection device of the substation cannot meet the requirements of quickly finding grounding faults;
4. The delay caused by multi-level line protection deteriorates the operating environment of the power grid.
ZW32M-12 outdoor vacuum circuit breaker is an ideal equipment to solve the above problems.

Functional Features
Integrated zero sequence grounding protection: It has both zero sequence voltage and zero sequence current protection. When a single-phase grounding or phase to phase short circuit fault occurs in the user branch line, the boundary switch will automatically trip, without affecting the power supply of the substation to other branch lines on the feeder line;
Parameter settings: The overcurrent and quick break protection values are continuously adjustable, and various parameters can be set according to the condition of the line;
Vacuum permanent magnet switch: Compared with spring mechanism, it has the characteristics of simple structure, reliable action, and long service life;
Stainless steel casing: Made of stainless steel shell, with beautiful appearance and long service life;
Intelligent control device: integrating protection and control, it can read data, set parameters, and view operating status through GSM/GPRS remote communication, and can also be set locally, view parameters, and remotely operated through Bluetooth handheld devices;
Characterized by strong anti-interference ability and safe and reliable operation;
Cable connection with aviation plug: Various components are connected through aviation plug, which is simple, convenient, and easy to maintain;
GSM/GPRS wireless communication: Configuring the GSM/GPRS wireless communication module can transmit monitoring data to the power management center, achieving real-time data monitoring of user loads; Conveniently and quickly locate the fault point.

ZW32M-12 Circuit Breaker Outline Dimensional Drawing

ZW32M-12 Circuit Breaker Primary Schematic and Installation Diagram

ZW32M-12 Intelligent Vacuum Circuit Breaker with Permanent Magnet Mechanism

[Outdoor vacuum circuit breaker]ZW18-40.5 Outdoor vacuum circuit breaker

2026-6-10 20:06:03

ZW18-40.5 outdoor vacuum circuit breaker is suitable for control and protection switches in power plant substations and industrial and mining enterprises, especially for places with frequent operation. The circuit breaker adopts a spring energy storage operating mechanism, which has manual and electric energy storage and manual and electric opening and closing operation performance. The electric can be operated by DC or AC. The circuit breaker has extremely strong breaking capacity and reliable opening and closing operations.

Rated voltage: 40.5kV
Rated current: 1250A
Rated short-circuit breaking current: 31.5kA
Rated short-circuit closing current: 80kA
Mechanical lifespan: 10000 cycles

[Outdoor vacuum circuit breaker]ZW33-12/M Inflatable permanent magnet outdoor high-voltage AC vacuum circuit breaker

2026-6-10 20:05:54

ZW33-12/M inflatable permanent magnet outdoor high-voltage AC vacuum circuit breaker is currently the most advanced and reliable intelligent vacuum circuit breaker on the market. It is suitable for breaking and closing load current, overload current, and short-circuit current in AC 12kV, 50Hz three-phase power systems. It can be used as a section switch and substation inlet and outlet switch for urban and rural power distribution systems. It can also be combined with a microcomputer monitoring unit to form an automatic distribution system. With the help of an electronic controller, it can achieve recloser and distribution automation functions.

ZW33-12/M series products fully comply with national standards and relevant regulations such as GB1984-2003, GB3309-1989, GB/T11022-1999.
The ZW33-12/M series products have passed all type test projects of Xi'an High Voltage Apparatus Research Institute, fully ensuring the safe operation of the products.

[Outdoor vacuum circuit breaker]ZW24-40.5 Outdoor high-voltage vacuum circuit breaker

2026-6-10 20:05:46

ZW24-40.5 Outdoor High Voltage Vacuum Circuit Breaker Technical Parameters:

parameter name	unit	numerical value
rated voltage	kV	forty point five
Rated short-time power frequency withstand voltage (1min) (dry/wet)		95/85
Rated lightning impulse withstand voltage (peak)		one hundred and eighty-five
rated frequency	Hz	fifty
rated current	A	1250, 1600
Rated short-circuit breaking current	kA	twenty-five	thirty-one point five
Rated short-time withstand current		twenty-five		thirty-one point five
Rated peak withstand current		sixty-three		eighty
Rated short-circuit closing current		sixty-three		eighty
Rated earth fault breaking current for different phases		twenty-one point seven
Rated short-circuit duration	S	four
Rated short-circuit current breaking times	time	twenty
mechanical life		ten thousand
Allowable wear thickness of contacts	mm	three
Rated operating sequence		Min-0.3s - combined and separated
		-180s combined and separated

ZW24-40.5 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW50-40.5 Outdoor high-voltage vacuum circuit breaker

2026-6-10 20:05:37

The ZW50-40.5 series outdoor high-voltage vacuum circuit breaker is an outdoor distribution equipment with a rated voltage of 40.5kV and three-phase AC 50Hz. Suitable for protection and control in urban and rural power grids, and more suitable for places with frequent operations. The circuit breaker adopts a brand new miniaturized design, fully enclosed structure, and unique vacuum arc extinguishing chamber sealing technology, with good sealing performance, which helps to improve moisture-proof and anti condensation performance, and is suitable for use in high-temperature and humid areas. Unique structural design, the current transformer and circuit breaker are integrated, which can achieve measurement and protection functions. The closing and opening of the circuit breaker can be manually or electrically operated, and can also be remotely controlled.

Main technical parameters of ZW50-40.5 outdoor high-voltage vacuum circuit breaker

serial number	name	unit	Numerical value
one	rated voltage	kV	forty point five
two	1-minute rated power frequency withstand voltage	kV	Interphase, ground, fracture 95
three	Rated lightning impulse withstand voltage (peak value)	kV	Phase to phase, ground to ground, fracture 185
four	rated current	A	1600 2000
five	Rated short-circuit breaking current	kA	twenty-five
six	Rated short-time withstand current (4s)	kA	twenty-five
seven	Rated short-circuit closing current (peak)	kA	sixty-three
eight	Rated peak withstand current	kA	sixty-three
nine	Rated short-circuit breaking current breaking times	time	twenty
ten	mechanical life	time	ten thousand
eleven	Rated voltage of energy storage motor	V	DC220��110 AC220
twelve	Rated closing and opening operating voltage	V	DC220��110 AC220
thirteen	Rated current of closing electromagnet	A	1.69��DC220��
fourteen	Rated current of the opening electromagnet	A	2.2��DC220��
fifteen	Current ratio of current transformer	A	100/5��1600/5
sixteen	Rated current of overcurrent release device	A	five

[Outdoor vacuum circuit breaker]VHS3-12 series indoor high-voltage AC vacuum circuit breaker (permanent magnet mechanism)

2026-6-10 20:05:28

The VHS3-12 series permanent magnet operated circuit breaker is mainly used in 10kV three-phase power systems with a rated frequency of 50Hz. As a protective and control electrical device, its design meets the requirements of GB1984, JB/T3855, DL/T403, IEC62271-100 and other standards. The overall structure adopts the form of an operating mechanism box and a front and rear arrangement of the arc extinguishing chamber. The bistable permanent magnet operating mechanism is placed in the front mechanism box of the arc extinguishing chamber in a flat layout. Unlike the spring operating mechanism, it applies permanent magnets to the operating mechanism to maintain the opening and closing positions of the vacuum circuit breaker through permanent magnets, replacing traditional locking devices. The moving parts are minimal, reducing the source of faults and having high reliability. This series of circuit breakers is mainly used for mid mounted switchgear (KYN type) and can also be used for fixed switchgear (XGN type). It has wide compatibility and interchangeability, and can be easily interchanged with mainstream domestic circuit breakers in a handcart style.

The main technical performance of VHS3-12 series indoor high-voltage AC vacuum circuit breaker (permanent magnet mechanism) is as follows:

Rated voltage: 12kV
Rated current: 630A~1600A
Rated short-time (4s) withstand current: 20 kA to 31.5 kA
Rated short-time (60s) power frequency withstand voltage: 42 kV (universal value); 48 kV (isolated fracture)

[Outdoor vacuum circuit breaker]VHS2-12 series indoor high-voltage AC vacuum circuit breaker (solid sealed pole)

2026-6-10 20:05:20

The VHS2-12 series solid sealed circuit breaker is mainly used in 10kV three-phase power systems with a rated frequency of 50Hz, as a protective and control electrical device. Its design meets the requirements of standards such as GB1984, JB/T3855, DL/T403, IEC62271-100, etc. The overall structure adopts the form of an operating mechanism box and an arc extinguishing chamber arranged in front and behind. The main electrical circuit pole part adopts a fixed sealing insulation method, which is different from the insulation cylinder structure. It seals the vacuum arc extinguishing chamber and conductive connectors with epoxy resin through a special process to form the pole. This series of circuit breakers is mainly used for mid mounted switchgear (KYN type) and can also be used for fixed switchgear (XGN type). It has wide compatibility and interchangeability, and can be easily interchanged with mainstream domestic circuit breakers in a handcart style.

The main technical performance of VHS2-12 series indoor high-voltage AC vacuum circuit breaker (solid sealed pole) is as follows:

Rated voltage: 12 kV
Rated current: 630A~4000A
Rated short-time (4s) withstand current: 20 kA to 40 kA
Rated short-time (60s) power frequency withstand voltage: 42 kV (universal value); 48 kV (isolated fracture)

[Outdoor vacuum circuit breaker]ZN73(VS1)-24 series indoor high-voltage AC vacuum circuit breaker

2026-6-10 20:05:10

The ZN73 (VS1) -24 series circuit breakers are mainly used in power systems of 24kV and below, as protection and control for power grid equipment and power equipment in industrial and mining enterprises. The design meets the requirements of standards such as GB1984, JB/T3855, DL/T403, IEC62271-100, etc. The overall structure adopts the form of an operating mechanism box and a front and rear arrangement of the arc extinguishing chamber. The main electrical circuit part adopts an insulated cylinder three-phase floor structure. The electrical unit and the spring operating mechanism arranged on the plane are placed in the mechanism box in front of the arc extinguishing chamber, making the operating performance of the operating mechanism very close to the required performance of the arc extinguishing chamber opening and closing, ensuring the reliability of the circuit breaker operating performance.

[Outdoor vacuum circuit breaker]ZWC��-40.5/L1600A-31.5 Type Open Combination Electrical Appliance

2026-6-10 20:05:01

1.1 ZWC �� -40.5/L1600A-31.5 open combination electrical apparatus is a complete set of combination electrical apparatus that uses air as the external insulation SF6 gas as the arc extinguishing medium Control and protection of 40.5KV transmission and distribution system for three-phase AC, and can also be used for connecting circuit breakers and opening and closing capacitor banks Suitable for urban substations, enterprise substations, and mountainous substations with tight land use. This product has the following characteristics:

1) Organically combine circuit breakers, isolating switches, grounding switches, current transformers, voltage transformers, lightning arresters, fuses, busbars, and other components on a grounded steel structure bracket, resulting in a compact structure.
2) It occupies only 30% -50% of the space of the split type, and has significant characteristics such as saving land and reducing project costs.
3) The entire interval is prefabricated in the factory, assembled and debugged before leaving the factory, and transported to the installation site as a whole, greatly shortening the installation cycle.
4) Adopting fully validated high-performance arc extinguishing chambers, voltage transformers, composite insulator lightning arresters, and isolating switches, with minimal maintenance and high reliability.
5) The self-supporting busbar prefabricated in the partition factory does not require users to repair the structure.
6) Flexible layout and can be used for various wiring methods.
7) The circuit breaker can be lowered for maintenance or replacement as a whole, and the power outage time can be shortened to at least 3 hours due to body failure.
1.2 ZWC �� -40.5 with excellent configuration
1) Advanced self powered arc extinguishing chamber, with a breaking capacity of 31.5KA, a fully open breaking time of 3 cycles, a simple and reliable structure, and a full capacity breaking capacity of 20 times.
2) The CTB all spring operating mechanism meets the requirements of "oil-free" switches: excellent mechanical characteristics, compact structure, high reliability, and has obtained national patents and technology high-quality products.
3) All isolation switches use composite insulators, with a single arm swing structure that is simple and reliable; Adopting self operated graphite silver plated dispersed copper contact fingers, the structure has good stress performance, strong flow capacity, and maintenance free.
4) All exposed metal parts adopt the most advanced anti-corrosion technology to ensure that there is no corrosion for 20 years under general pollution conditions.
1.3 ZWC �� -40.5 shall comply with national standards GB1984-2003, GB11032-89, GB1985-2004, and meet the requirements of International Electrotechnical Commission standards IEC56, IEC99-4, IEC129, and IEC694. All other components inside meet their respective international requirements.

2 ZWC �� -40.5/L1600A-31.5 type open combination electrical apparatus structure and working principle
2.1 This product is an outdoor product and can also be used outdoors. The environmental conditions for use are as follows
a. Altitude: not exceeding 2000 meters (special orders are not limited)
b. Environmental temperature: -40 �� -+40 ��
c. Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90% (25 ��)
d. Wind speed: not exceeding 35 meters per second
e. Pollution level IV, nominal creepage distance greater than 31mm/kv
f. No flammable, explosive, chemically corrosive, or violently vibrating environments
g. Seismic intensity: not exceeding 8 degrees
h. Ice thickness not exceeding 10mm

3.3 Current Transformer
0.5 (0.2) level current transformers can be used for measurement and have passed the measurement review. The protective transformer can provide signals for the secondary protection part.
1) Each circuit breaker can be equipped with 3-12 bushing type current transformers (hereinafter referred to as "transformers"), with 1-4 installed under each phase fracture. The winding is immersed in sulfur hexafluoride gas, and the conductive rod and lower support are the primary circuit. The transformer itself only has a circular iron core and a secondary circuit. The secondary circuit output is led to the outside through a well sealed terminal block. The terminal block and the connecting wire to the mechanism box are protected by a cover and steel pipe to prevent direct contact with the atmospheric environment.
2) There are two types of transformers: LR-35, for measurement purposes. LRB-35 type, with a rating of 10P, is used for ordinary protection or differential protection. Each specification has four connectors, which can obtain three current ratios. All output lines of the transformer are led to the panel inside the mechanism box, and users can easily change the current ratio. The technical parameters of the current transformer are shown in Table 3. If they exceed the requirements in the table, the user can negotiate with the manufacturer.
3) When the rated current exceeds 1600A, built-in current transformers cannot be installed.
4) The model and specifications of the transformer attached to the circuit breaker, the current ratio, and the tap connection are determined by the user according to their needs. Each unit is allocated according to the purchase contract when the product leaves the factory.
5) Arrangement of transformers in circuit breakers
The conduction of the transformer is introduced into the wiring board of the mechanism box through a good wiring board, with a wire area of 2.5mm2

[Outdoor vacuum circuit breaker]ZW37H-40.5 Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 20:04:52

ZW37h-40.5 outdoor AC high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 40.5KV and three-phase AC 50HZ. Mainly used for breaking and closing load current, overload current, and short-circuit current in power systems
Suitable for protection and control of substations, industrial and mining enterprises, as well as regional and rural power grid automation distribution networks.
Through comprehensive type testing at Beijing Electric Power Research Institute, it meets the following standards:
GB/T1984 High Voltage AC Circuit Breakers
GB/T11022 Common Technical Requirements for High Voltage Switchgear and Control Equipment
D1402 Technical Conditions for Ordering AC Voltage Circuit Breakers

characteristic
Miniature vacuum arc extinguishing chamber: maximum reliability, long working life, encapsulated in epoxy resin;
Epoxy resin encapsulation: meets environmental requirements, has been widely validated for outdoor performance, ozone and ultraviolet resistance, is sturdy, lightweight, not easily brittle, and easy to transport;
Reasonable design structure:
Epoxy resin sleeve pillar porcelain bottle, with epoxy APG casting vacuum arc chamber on the upper part and pillar porcelain bottle on the lower part, with insulation rod inside. The three-phase pillar porcelain bottles are installed together on a mechanism box, and the dynamic end of the arc extinguishing chamber is connected to the output shaft of the mechanism through the insulation rod;
Safe and reliable, easy to debug and maintain;
The insulation rod at the vacuum arc extinguishing end is connected to the output shaft of the mechanism for direct movement, which is safe, reliable, and easy to debug and maintain. It has an automated power distribution interface: it can flexibly move and is equipped with remote auxiliary contacts to meet the requirements of power distribution automation;
High parameters and high performance: The rated current reaches 2000A, and the rated short-circuit breaking current is 31.5KA.

ZW37H-40.5 Outdoor AC High Voltage Vacuum Circuit Breaker Main Technical Parameters

project		unit	parameter
rated voltage		kv	forty point five
rated current		a	630,1250,1600,2000
Rated short-circuit breaking current		ka	twenty	twenty-five	thirty-one point five
Rated short-circuit closing current (peak)		ka	fifty	sixty-three	eighty
Rated short-time withstand current		ka	twenty	twenty-five	thirty-one point five
Rated peak withstand current		ka	fifty	sixty-three	eighty
Rated short-circuit duration time		two	four
Rated insulation level	1-minute power frequency withstand voltage	kv	ninety-five
	Lightning impulse withstand voltage (peak value)		one hundred and eighty-five
Rated operating sequence			o-0.3s-co-180s-co
Rated short-circuit current breaking times		time	twenty
mechanical life		time	ten thousand
Rated operating voltage		v	220(dc,ac)

Note: When the product is used at an altitude exceeding 1000M, the insulation level shall be adjusted according to the corresponding correction factor.

Appearance and installation dimensions

[Outdoor vacuum circuit breaker]ZW32B-12 series column type outdoor high-voltage vacuum circuit breaker

2026-6-10 20:04:43

ZW32B-12 series column outdoor high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with three-phase AC 50Hz and rated voltage of 12KV. Suitable for breaking and closing load current, overload current, and short-circuit current of urban or rural distribution systems.
The circuit breaker is a brand new compact design. Fully enclosed structure, unique arc extinguishing chamber packaging technology, good sealing performance, moisture-proof, anti condensation, suitable for high temperature and humid areas. The ZW32B-12G circuit breaker isolation switch combination is composed of two main parts: ZW32B circuit breaker isolation switch.

Main technical parameters of ZW32B-12 series column outdoor high-voltage vacuum circuit breaker

serial number	parameter name		unit	ZW32B-12 /T400-12.5	ZW32B-12 /T630-16	ZW32B-12 /T630-20
one	rated voltage		KV	twelve
two	rated current		A	four hundred	six hundred and thirty	six hundred and thirty
three	Rated short-circuit breaking current		KA	twelve point five	sixteen	twenty
four	Rated short-circuit closing current (peak)			thirty-one point five	forty	fifty
five	Rated peak withstand current			thirty-one point five	forty	fifty
six	Rated short-time withstand current			twelve point five	sixteen	twenty
seven	Rated short-circuit duration		S	four
eight	Rated Absolute Edge level	1-minute power frequency withstand voltage	KV	Interphase, ground 42, fracture 48
		Lightning impulse withstand voltage (peak value)		Interphase, ground 72, fracture 75
nine	Rated operating sequence			Fen-0.3S-180S-Fen (electric mechanism)
ten	Rated short-circuit current breaking times		time	thirty
eleven	mechanical life			ten thousand
twelve	Rated operating voltage (switching coil)			A/DC220��110��DC24
thirteen	Allowable cumulative thickness of wear for dynamic and static contacts		V	three
fourteen	Rated current of overcurrent release device		mm	five
fifteen	Current ratio of current transformer		A	200/5, 400/5, 600/5
sixteen	Contact opening distance		mm	9±1
seventeen	Contact overtravel			2±0.5
eighteen	Average opening speed		m/s	1.2±0.3
nineteen	Average closing speed			0.6±0.2
twenty	Opening time		ms	20~40
twenty-one	closing time			30~60
twenty-two	Closing bounce time			��2
twenty-three	Synchronization of three-phase opening and closing
twenty-four	DC resistance of each phase circuit		�̦�	��80
twenty-five	energy storage motor	rated voltage	V	DC/220��110��24
		rated power	W	forty
		Energy storage time	S	��8
twenty-six	quality		kg	eighty-five

ZW32B-12 series column outdoor high-voltage vacuum circuit breaker, external installation dimensions

Note: The current transformer ratio can be selected according to customer requirements

[Outdoor vacuum circuit breaker]ZW43-12M Permanent magnet vacuum circuit breaker

2026-6-10 20:04:34

ZW43-12 (permanent magnet) vacuum circuit breaker has applied multiple patented technologies, making it have many advantages: no SF6, no oil, less environmental impact, and conducive to environmental protection; Small unit size, lightweight, and easy to install on columns; The intelligent control unit is compact and can be easily installed under the column. It can be equipped with a wireless remote control and can control the opening and closing of switches within a range of 100 meters; Suitable for on-site operation and remote control of urban and rural power grids; Except for replacing the battery every 5 years, the circuit breaker body is basically maintenance free for life.

Product features and reference standards
ZW43-12 (permanent magnet) vacuum circuit breaker is designed specifically to meet the needs of distribution network automation, and can achieve various measurement, protection, and control functions. Product fully sealed structural design; There are no additional insulation materials inside the shell except for the epoxy support; The casing is arranged horizontally, and the output and input ends are arranged horizontally, which is conducive to cable connection even when connected to overhead lines; The integral molding sleeve can ensure good air tightness. At 630A, the load shedding operation exceeded 30000 times, resulting in less maintenance workload. Cut off the rated short-circuit current of 20kA for more than 30 times. Configurable isolation knife switch, with obvious disconnection points, easy to maintain and safe.

The products shown in this manual comply with the following standards and specifications:
GB1984 "AC High Voltage Circuit Breakers"
GB11022 General Technical Conditions for High Voltage Switchgear
GB311.1 Insulation Coordination for High Voltage Transmission and Transformation Equipment
DL/T 593 "Technical Conditions for Common Ordering of High Voltage Switchgear"
DL/T 402 "Technical Conditions for Ordering AC High Voltage Circuit Breakers"
GB2706 "Test Method for Dynamic and Thermal Stability of AC High Voltage Electrical Appliances"
GB3309 "Mechanical Testing of High Voltage Switchgear at Room Temperature"
DL403 Technical Conditions for Ordering 10-35kV Indoor High Voltage Vacuum Circuit Breakers

[Outdoor vacuum circuit breaker]ALYC-220W Outdoor intelligent permanent magnet control device

2026-6-10 20:04:25

ALYC-220W Outdoor Intelligent Permanent Magnet Control Device

[Outdoor vacuum circuit breaker]ZW32-12G series column type outdoor vacuum circuit breaker isolation switch combination electrical appliance

2026-6-10 20:04:17

ZW32-12G series column outdoor high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with three-phase AC 50Hz and rated voltage of 12KV. Suitable for breaking and closing load current, overload current, and short-circuit current in urban or rural distribution systems.

Main technical parameters of ZW32-12G series column outdoor vacuum circuit breaker isolation switch combination electrical device

ZW32-12G series column outdoor vacuum circuit breaker isolation switch combination electrical device

[Outdoor vacuum circuit breaker]ZW14A-12 Outdoor high-voltage vacuum circuit breaker

2026-6-10 20:04:08

ZW14A-12 outdoor high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 12kV and three-phase AC 50Hz.

The operating mechanism dedicated to the integration of ZW14A-12 outdoor high-voltage vacuum circuit breaker mechanism and switch is spring energy storage, which can be operated by AC/DC energy storage or manually operated.
This circuit breaker has a simple structure, strong breaking capacity, long service life, complete operating functions, no explosion hazard, and easy maintenance. It is mainly suitable for 12kV systems in rural and urban power grids, and is used for dividing and combining load currents, overload currents, and short-circuit currents. It can also be used in other similar places.

Table 1

serial number	name					unit	data
one	rated voltage					kV	twelve
two	Rated insulation level	1-minute power frequency pressure resistance			Dry test		forty-two
					Wet test		thirty-four
		Lightning impulse withstand voltage (peak value)					seventy-five
three	rated current					A	six hundred and thirty
four	Rated short-circuit breaking current					kA	12.5 16 20
five	Rated operating sequence						Fen-0.3S-180S-Fen
six	Rated short-circuit breaking current breaking times					time	thirty
seven	Rated short-circuit closing current (peak)					kA	fifty
eight	Rated peak withstand current
nine	Rated short-time withstand current					kA	twenty
ten	Rated short-circuit duration					S	four
twelve	closing time					S	�� 0.06
thirteen	Total breaking time						�� 0.10
fourteen	mechanical life					time	ten thousand
fifteen	Rated input power of energy storage electric machinery					W	�� 250
sixteen	Rated operating voltage			closing coil		V	DC220	AC220
				trip coil
seventeen	Rated voltage of energy storage motor
eighteen	Rated operating current		closing coil			A	one point one one	one point one
			trip coil				zero point five one	zero point five
nineteen	Energy storage time at rated voltage					S	�� 10
twenty	Rated current of overcurrent release device					A	five
twenty-one	weight					kg	About 130

ZW14A-12 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW8-12T-630-20 outdoor vacuum circuit breaker

2026-6-10 20:03:58

ZW8-12T-630-20 Outdoor Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]FDZ32-12 series outdoor high-pressure vacuum automatic sectionalizer

2026-6-10 20:03:50

The FDZ32-12 series outdoor high-voltage vacuum automatic sectionalizer (hereinafter referred to as the sectionalizer) is used for 50Hz, 12kV three-phase distribution networks and is an intelligent switchgear. This segmenter, when used in conjunction with a recloser, can independently handle faults in the distribution network without relying on other control systems, and can minimize the area of power outages caused by faults. This product consists of a segmenter body and an electronic controller. The main body of the sectionalizer is an outdoor vacuum circuit breaker, which can be used to open and close load currents, circulating currents in the ring network, inductive currents of no-load transformers, and capacitive currents of capacitor banks (or cable lines); It can also close the short-circuit current and withstand the electric and thermal effects caused by short-circuit current. The incoming end of the segmenter body is equipped with a current transformer, which provides source information for the operation of the controller. The primary current of the current transformer can be made into 50-630A according to the user's requirements; the secondary current can be made into 5A or 1A.

During the period when a short circuit fault occurs in the distribution line and the recloser performs multiple reclosures in a predetermined manner, the electronic controller of the segmenter can remember the number of short-circuit currents passing through it. When the number of short-circuit currents passing through it reaches the set value, the segmenter automatically opens within the reclosing interval of the recloser without current or voltage, isolating the line that has experienced permanent faults. When the intact line continues to supply power, the isolation switch of this segmenter will automatically open, which not only reduces the range of power outages and avoids the extension and expansion of faults, but also marks the section where the fault occurred, providing convenience for searching for the fault point and shortening the power outage time. The main body of the segmenter is operated by a spring mechanism, which can be closed by storing energy with an electric motor (or human) and opened by an electromagnet (or human). The segmenter adopts a vacuum arc extinguishing device, with long electrical life, maintenance free, no explosion or fire hazard. Its overall layout is a floor standing pillar type, using an air silicone rubber composite insulation structure, light weight, small size, and suitable for installation on the pillar The power supply of the controller of the segmenter is installed separately from the main body.

[Outdoor vacuum circuit breaker]ZWM8-12/630 Type Permanent Magnet Outdoor High Voltage Column Dry Vacuum Circuit Breaker

2026-6-10 20:03:41

ZWM8-12/630 permanent magnet outdoor high-voltage vacuum column dry-type circuit breaker (hereinafter referred to as the circuit breaker) is a control and protection equipment in the rated voltage 12KV, 50HZ AC three-phase high-voltage distribution network.

ZWM8-12/630 permanent magnet outdoor high-voltage column dry vacuum circuit breaker is mainly used for breaking and closing load current, overload current, and short-circuit current in power lines. Suitable for protection and control in power distribution systems of substations and industrial and mining enterprises. This circuit breaker adopts a column type, dry-type structure, with reliable insulation, long electrical life, and maintenance free, especially suitable for the requirements of frequent operating places. It is more suitable for installation and use in rural power grids with weak maintenance and repair capabilities. Complies with the requirements of GB1984 AC High Voltage Circuit Breakers, GB1985 AC High Voltage Disconnectors and Grounding Switches, DL/T402, DL/T4.3, and enterprise standard OHX.520.701.

[Outdoor vacuum circuit breaker]ZWM9-12/630 Type Permanent Magnet Outdoor High Voltage Vacuum Circuit Breaker

2026-6-10 20:03:33

ZWM9-12/630 permanent magnet outdoor high-voltage vacuum column dry-type circuit breaker (hereinafter referred to as the circuit breaker) is a control and protection equipment in the rated voltage 12KV, 50HZ AC three-phase high-voltage distribution network. Mainly used for breaking and closing load current, overload current, and short-circuit current in power lines. Suitable for protection and control in power distribution systems of substations and industrial and mining enterprises. This circuit breaker adopts a column type, dry-type structure, with reliable insulation, long electrical life, and maintenance free, especially suitable for the requirements of frequent operating places. It is more suitable for installation and use in rural power grids with weak maintenance and repair capabilities. Complies with the requirements of GB1984 AC High Voltage Circuit Breakers, GB1985 AC High Voltage Disconnectors and Grounding Switches, DL/T402, DL/T4.3, and enterprise standard OHX.520.701.

[Outdoor vacuum circuit breaker]ZW8-12/C Intelligent outdoor high-voltage vacuum circuit breaker

2026-6-10 20:03:24

ZW8-12/C (ZW8-12-C) intelligent outdoor high-voltage vacuum circuit breaker (hereinafter referred to as intelligent circuit breaker) is used in AC 50Hz, voltage 10-12 kV local phase power systems, as a means of breaking and closing load currents. It has overload and short circuit protection functions, quick break protection functions, definite time delay protection functions, automatic reclosing functions, and can also be equipped with lightning arresters or isolation switches (i.e. circuit breaker and isolation switch combination, hereinafter referred to as "combined intelligent circuit breaker") according to user needs. This intelligent circuit breaker comes with its own power supply, can be remotely operated nearby, and is equipped with CT and PT interfaces to meet telemetry requirements.

Use environmental conditions Service conditions
*Surrounding temperature: -30 ��~+40 ��;
*Altitude: �� 1000m (if altitude needs to be increased, the rated insulation level should be correspondingly increased)
*Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 34m/s);
*Amplitude: The seismic intensity does not exceed level 8;
*Pollution level: Level III;
*Maximum daily temperature difference: not exceeding 25 ��

ZW8-12-C Intelligent Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ISM1-12 type permanent magnet vacuum circuit breaker

2026-6-10 20:03:15

ISM1-12 permanent magnet vacuum circuit breaker

[Outdoor vacuum circuit breaker]ZW8M-12/630 type intelligent outdoor permanent magnet vacuum circuit breaker

2026-6-10 20:03:07

[Outdoor vacuum circuit breaker]ZW32Y-12 type intelligent outdoor permanent magnet vacuum circuit breaker

2026-6-10 20:02:57

ZW32Y-12 Intelligent Outdoor Permanent Magnet Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW32-24 series column mounted vacuum circuit breaker

2026-6-10 20:02:49

ZW32M-24 (permanent magnet) vacuum circuit breaker is a combination series product: a combination isolation switch can be optionally selected to provide a visible break for line maintenance; The circuit breaker is equipped with a permanent magnet operating mechanism, which forms the best cooperation with the vacuum arc extinguishing chamber to complete the operation function, and the closing and opening actions are stable and reliable; The entire product design is advanced and reasonable, with a compact structure, a completely sealed box, no condensation inside, no rust on the components, and greatly improved switch reliability; By adopting a new composite solid insulation structure, the vacuum arc extinguishing chamber, main electrical circuit, insulation support, etc. are organically combined into an integrated solid sealed pole, completely solving the contradiction between miniaturization of the vacuum arc extinguishing chamber and meeting external insulation requirements; The casing is arranged horizontally, and the output and input ends are arranged horizontally, which is conducive to cable connection even when connected to overhead lines; The optional isolation switch is equipped with a manual operating mechanism, which forms a mechanical anti misoperation lock; The casing of the circuit breaker is available in two options: stainless steel and ordinary steel plate treated with Dacromet rust prevention, which can achieve a lifespan of 10 years without the need for paint maintenance; The power system within the intelligent control unit ensures at least 24 hours of continuous battery power supply in the event of system power failure, and can control the switch to perform reliable actions.

Due to the application of multiple patented technologies, ZW32M-24 (permanent magnet) vacuum circuit breaker has many advantages: no SF6, no oil, less environmental impact, and conducive to environmental protection; Small unit size, lightweight, and easy to install on columns; The intelligent control unit is compact and can be easily installed under the column. It can be equipped with a wireless remote control and can control the opening and closing of switches within a range of 100 meters; Suitable for on-site operation and remote control of urban and rural power grids; Except for replacing the battery every 5 years, the circuit breaker body is basically maintenance free for life.
Chapter 2 Product Features and Reference Standards

ZW32M-24 (permanent magnet) vacuum circuit breaker integrates microprocessor technology, modern network communication technology, and new switch manufacturing technology. It is designed specifically to meet the needs of distribution network automation and can achieve various measurement, protection, and control functions.
Compared to traditional electrical devices, it has the following characteristics: (1) good performance and high reliability; (2) Hardware and software transformation; (3) Equipped with online monitoring and self diagnostic functions; (4) Adapt to harsh environments and operate safely and reliably within the temperature range of -40 �� to+85 ��.
It has powerful communication processing capabilities: RS-232 interface enables local parameter setting and programming; Through RS-485 interface LonWorks�� Optical modems and fiber optic Ethernet enable system networking and remote data transmission functions.

Product fully sealed structural design; There are no additional insulation materials inside the shell except for the epoxy support; The casing is arranged horizontally, and the output and input ends are arranged horizontally, which is conducive to cable connection even when connected to overhead lines; The integral molding sleeve can ensure good air tightness.
At 630A, the load shedding operation exceeded 30000 times, resulting in less maintenance workload. Cut off the rated short-circuit current of 20kA for more than 30 times.
Configurable isolation knife switch, with obvious disconnection points, easy to maintain and safe.

The products shown in this manual comply with the following standards and specifications:
GB1984 "AC High Voltage Circuit Breakers"
GB11022 General Technical Conditions for High Voltage Switchgear
GB311.1 Insulation Coordination for High Voltage Transmission and Transformation Equipment
DL/T 593 "Technical Conditions for Common Ordering of High Voltage Switchgear"
DL/T 402 "Technical Conditions for Ordering AC High Voltage Circuit Breakers"
GB2706 "Test Method for Dynamic and Thermal Stability of AC High Voltage Electrical Appliances"
GB3309 "Mechanical Testing of High Voltage Switchgear at Room Temperature"
DL403 Technical Conditions for Ordering 10-35kV Indoor High Voltage Vacuum Circuit Breakers
GB/T13729-1992 "General Technical Conditions for Remote Control Terminals"
GB/T15153.2 "Working conditions and environmental conditions for remote control equipment and systems" (idt IEC870-2-2:1996)
GB/T15153.1-1998 "Remote Control Equipment and Systems Part 2: Working Conditions" (idt IEC870-2-1:1995)
DL/T630-1997 Technical Conditions for AC Sampling Remote Control Terminals
GB/T17626.4-1998 "Electromagnetic compatibility: Testing and measurement techniques, fast transient burst immunity test" (idt IEC61000-4-4:1995)
IEC61334-5-1��1999��Distribution Automation using distribution line carrier systems Communication Protocols��

Usage conditions:
Surrounding air temperature: -40 ��~+55 ��, daily temperature difference: daily variation of 25 ��;
Altitude: not exceeding 2000 meters;
Wind speed: not exceeding 35 m/s;
No frequent severe vibrations;
Places without strong corrosive gases or media (such as various acids, alkalis, thick smoke, etc.);
Anti pollution ability level IV;
Storage temperature -40 ��~+85 ��;

[Outdoor vacuum circuit breaker]ZW8-40.5/1600-25(20,30.5) Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 20:02:39

ZW8-40.5/1600-25 (20,30.55) outdoor AC high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is used in three-phase power systems with AC 50Hz, as a switch for load current, overload current, and short-circuit current. The overall structure of this product is a pillar type ceramic bottle. The upper ceramic bottle is an arc extinguishing chamber ceramic bottle, which is equipped with a vacuum arc extinguishing chamber, and the lower ceramic bottle is a pillar ceramic bottle. The three-phase ceramic bottles are installed together in a mechanism box. The moving end of the arc extinguishing chamber is connected to the output shaft of the electromagnetic mechanism through a crank arm insulation rod. The connecting rod between the mechanism and the circuit breaker is installed in a waterproof box.

Technical parameters of ZW8-40.5/1600-25 (20,30.5) outdoor AC high-voltage vacuum circuit breaker:

serial number	project			unit	data
one	rated voltage			kV	forty point five
two	rated insulation level	1min power frequency withstand voltage	Dry test	KV	ninety-five
			wet test		eighty
		Lightning impulse withstand voltage (peak value)			one hundred and eighty-five
three	rated current			A	one thousand and six hundred
four	Rated short-circuit breaking current			kA	20 25 31.5
five	Rated operation sequence				Split -0.3s - Split -180s - Split - Split
six	Rated breaking current of capacitor bank			A	four hundred
seven	Rated short-circuit breaking current breaking times			time	twelve
eight	Rated short-circuit closing current (peak)			kA	50 63 80
nine	Rated peak withstand current
ten	Rated short-time withstand current				20 25 31.5
eleven	Rated short-circuit duration			S	four
twelve	Total breaking time			ms	�� 80
thirteen	mechanical life			time	ten thousand
fourteen	Rated operating voltage and rated voltage of auxiliary circuit			V	AC, DC 220V, 110V
fifteen	Rated operating current (closing) electromagnetic mechanism			A	147(220V), 294(110V)
sixteen	Allowable wear thickness of dynamic and static contacts			mm	three
seventeen	weight			kg	eight hundred

ZW8-40.5/1600-25 (20,30.5) Outdoor AC High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW6-630/20 Cable distribution box circuit breaker

2026-6-10 20:02:31

ZW6-630/20 cable junction box circuit breaker

[Outdoor vacuum circuit breaker]ZW8-12/630-20 outdoor high-voltage vacuum circuit breaker (with single isolation knife)

2026-6-10 20:02:22

ZW8-12/630-20 outdoor high-voltage vacuum circuit breaker (with single isolation knife)

I. Overview
ZW8-12/630-20 outdoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz outdoor high-voltage switchgear. Mainly used for 10KV systems in rural and urban power grids, it is only used for dividing and combining load currents, overload currents, and short-circuit currents, and can also be used in other similar places.

2�� Main technical parameters

serial number	project		unit	parameter
one	rated voltage		KV	twelve
two	rated current		A	six hundred and thirty
three	Power frequency withstand voltage (1min)		KV	forty-two
four	Lightning impulse withstand voltage (peak value)		KV	seventy-five
five	Rated short-circuit breaking current		KA	twenty
six	Rated short-circuit closing current		KA	fifty
seven	Rated peak withstand current		KA	fifty
eight	4S short-time withstand current		KA	twenty
nine	Rated operating sequence		KA	Fen-0.3S-180S-HeFen
ten	Rated short-circuit current breaking times		time	thirty
eleven	mechanical life		time	ten thousand
twelve	Rated voltage of energy storage motor		V	-24, -48 �� 10, �� 220
thirteen	Rated operating voltage (Equipped with CT type spring operating mechanism)	Opening coil and closing coil	V	-24, -36, -48 �� 10, �� 220
fourteen	Rated current of overcurrent release device		A	five
fifteen	Allowable wear thickness of dynamic and static contacts		mm	three
sixteen	weight		kg	one hundred and sixty-five

3�� Ordering Notice
Please specify when placing an order
The model, name, quantity, breaking current, current ratio of the equipped current transformer, operating mode, and usage scenario of the product.

4�� ZW8-12/630-20 outdoor high-voltage vacuum circuit breaker (with single isolation knife) installation size: 500 × 400

[Outdoor vacuum circuit breaker]ZW-24 Outdoor high-voltage vacuum circuit breaker

2026-6-10 20:02:13

Rated parameters of ZW-24 outdoor high-voltage vacuum circuit breaker

serial number	parameter name	unit	rated value
one	rated voltage	KV	twenty-four
two	Rated insulation level		one hundred and twenty-five
	a. Lightning impulse withstand voltage (peak value)	KV	one hundred and twenty-five
	b. Short time (1-minute) power frequency dry test withstand voltage	KV	sixty-five
	c. Short time (1-minute) power frequency dry test withstand voltage	KV	fifty
three	rated frequency	HZ	fifty
four	rated current	A	six hundred and thirty
five	Rated short-circuit breaking current (effective value)	KA	twenty
six	The specified value of expected transient recovery voltage	KV	41/44
seven	Rated operating sequence		Fen-0.3S-180S-Fen
eight	Rated short-circuit closing current (peak)	KA	fifty
nine	Rated short-time withstand current	KA	twenty
ten	Rated short-circuit duration	S	two
eleven	Rated peak withstand current	KA	fifty
twelve	Rated operating voltage of the operating mechanism	V	AC or DC 220
thirteen	Rated short-circuit current breaking times	time	twenty
fourteen	Overcurrent release current	A	5±0.2
fifteen	mechanical life	time	ten thousand

ZW-24 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW43-12 Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 20:02:04

ZW43-12 outdoor AC high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is an outdoor distribution equipment with a rated voltage of 12KV and three-phase AC 50Hz. Mainly used for breaking and closing load current, overload current, and short-circuit current in electronic systems. Suitable for protection and control in substations and distribution systems of industrial and mining enterprises, as well as places with frequent operation of rural power grids. It can also operate the segmented switch of the power grid, and after installing a controller, it can achieve distribution network automation.

ZW43-12 Outdoor AC High Voltage Vacuum Circuit Breaker Main Technical Parameters

serial number	project	unit	parameter
one	rated voltage	KV	twelve
two	rated frequency	Hz	fifty
three	rated current	A	six hundred and thirty
four	Rated short-circuit breaking current	KA	twenty
five	Rated peak withstand current (peak)	KA	fifty
six	Rated short-term durability current	KA	twenty
seven	Rated short-circuit closing current (peak)	KA	fifty
eight	mechanical life	time	ten thousand
nine	Rated short-circuit breaking current breaking times	time	thirty
ten	Power frequency withstand voltage (1min): (wet) (dry) phase to phase, ground/fracture	KV	30/42/48
eleven	Lightning impulse withstand current (peak value) phase to phase, ground/fracture	KV	75/85
twelve	Secondary circuit 1-minute power frequency withstand voltage	KV	two

serial number	project	unit	parameter
one	Contact opening distance	mm	9±1
two	Contact overtravel	mm	2±0.5
three	Opening speed	m/s	1.0±0.2
four	closing speed	m/s	0.6±0.2
five	Contact closing bounce time	ms	��2
six	Center distance between phases	mm	340±1.5
seven	Three phase opening and closing asynchrony	ms	��2
eight	Resistance of each phase conductive circuit	�̦�	��80
nine	closing time	ms	25~45
ten	Opening time	ms	23~45

ZW43-12 Outdoor AC High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW39-40.5 series outdoor high-voltage AC vacuum circuit breaker

2026-6-10 20:01:56

ZW39-40.5 outdoor high-voltage AC vacuum circuit breaker is suitable for use in AC 40.5kV, 50Hz three-phase power systems for control and protection in industrial and mining enterprises, power plants, and substations. This product can be operated frequently and can also be used as a contact circuit breaker.
Main characteristics of circuit breakers
ZW39-40.5W/T2000-31.5 outdoor vacuum circuit breaker solves the major problem of internal condensation and moisture absorption caused by temperature and humidity changes in similar domestic products, which leads to a decrease in insulation strength, as well as the problem of aging due to exposed insulation rods. It strengthens the insulation strength of the inner surface of the sleeve and insulation components. In addition, the circuit breaker also has the following characteristics:
The preferred contact material for the vacuum arc extinguishing chamber ensures that the average small current interruption value is below 4A, effectively suppressing operational overvoltage.
The circuit breaker has strong breaking capacity, with a breaking short-circuit current of 31.5kA for 30 times.
Adopting the CT10A improved mechanism with reliable performance, it can operate frequently and has a lifespan of up to 10000 times.
This product can adapt to environmental requirements at an altitude of 3000 meters and has a high level of external insulation.
Circuit breakers can be equipped with internal or external transformers:
Each phase of the circuit breaker can be equipped with 4 internal current transformers. The iron core of the internal current transformer is made of microcrystalline alloy and high magnetic conductivity material. The accuracy of current transformers with 200A and above can reach 0.2 level and 0.2S level. The overall structure of the circuit breaker is compact, and the wrapping process of the secondary winding of the transformer has been fully optimized. Fully ensure that the shape of the transformer coil after wrapping is regular, without burrs, and does not loosen during drying. After being installed in the host, there is no deformation, and the electric field is uniform.
This product is filled with slightly positive pressure SF6 gas (without internal CT: 0.02MPa, internal CT: 0.2MPa) in the vacuum arc extinguishing chamber and porcelain sleeve, ensuring that condensation and moisture absorption will not occur inside. At the same time, it can avoid defects such as bubbles, penetrating discharge, and difficulty in maintenance and repair caused by filling organic insulation materials inside the original ZW7 series products.
The main secondary electrical components are selected from high-quality products with high operational reliability.
The surface treatment of exposed parts of the product is hot-dip galvanized or directly made of high-quality stainless steel sheet, with superior corrosion resistance.
This product can directly replace the SW2-35 type low oil circuit breaker (with the same installation size), and with a transition bracket, it can replace various types of multi oil circuit breakers, making it an ideal oil-free circuit breaker.

3 Main Technical Parameters

Preface number	Project			Unit	Parameters
one	rated voltage			kV	forty point five
two	1-minute power frequency withstand voltage (Fracture/phase to phase, to ground)				(95+23)/95 * (dry test)
					85 * (wet test)
three	Rated lightning impulse withstand voltage (peak) (fracture/phase to phase, to ground)				��185+30��/185*
four	rated current			A	two thousand
five	Rated short-circuit breaking current			kA	thirty-one point five
six	Rated short-time withstand current				thirty-one point five
seven	Rated short-circuit closing current (peak)				eighty
eight	Rated peak withstand current				eighty
nine	Rated out of step breaking current				eight
ten	Grounding fault breaking current of different phases				twenty-seven point four
eleven	Rated short-circuit duration			S	four
twelve	Rated short-circuit breaking current breaking times			time	thirty
thirteen	Rated breaking current of a single capacitor bank			A	six hundred and thirty
fourteen	Rated operating sequence				O-0.3s-CO-180s-CO
fifteen	mechanical life			time	ten thousand
seventeen	Vacuum interrupter Vacuum degree of (TD-40.5/2000-31.5W)	Newly manufactured arc extinguishing chamber		Pa	��1.33×10-3
		Within the 20-year storage period		Pa	��6.6×10-2
eighteen	Weight of circuit breaker			kg	750 (no CT, attached CT) 1000 (with CT)
nineteen	Rated inflation pressure (20 ��)			MPa	0.02 (no CT, external CT)/0.2 (internal CT)
twenty	SF6 gas replenishment alarm pressure (20 ��)			MPa	0.15 (with attached CT)
twenty-one	Moisture content of SF6 gas				�� 250 × 10-6 (CT included)
twenty-two	External insulation creepage distance		fracture	mm	��1255
			to the ground		��1255

Note: The * value represents the external insulation level of the product, which is adjusted according to an altitude of 3000m during testing. The three values are 122kV, 109 kV, and 237 kV, respectively.

4. Ordering Notice
Circuit breaker model and specifications;
Rated electrical parameters (voltage, current, breaking current, etc.);
Operating voltage of the operating mechanism and motor voltage;
The quantity, current ratio, level combination, secondary load, and installation location of the attached current transformers;
Names and quantities of spare parts, specialized tools, and equipment (to be ordered separately).
5. Outline and installation dimension diagram

ZW39-40.5 series outdoor high-voltage AC vacuum circuit breaker

[Outdoor vacuum circuit breaker]ZW30-40.5 Outdoor High Voltage Vacuum Circuit Breaker

2026-6-10 20:01:47

ZW30-40.5 series outdoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz high-voltage switchgear mainly used for control and protection of 40.5KV power transmission and transformation systems. It can also be used for normal operation and short-circuit protection of multiple power grids and industrial and mining enterprises, and can be used as a connecting circuit breaker and for opening and closing capacitor groups.

ZW30-40.5 outdoor high-voltage vacuum circuit breaker is equipped with CT17-IVB spring energy storage operating mechanism, which can remotely control electric energy storage, electric opening and closing operations, as well as on-site manual energy storage, manual opening and closing operations.
Advantages:
Three column structure, small footprint, small volume, and light weight;
It can carry 6 outdoor current transformers, and the measurement accuracy of the transformers can reach 0.2 and 0.2S levels, and the protection accuracy can be 5P and 10P levels;
Can avoid the trouble of disassembling the circuit breaker when the current transformer fails;
The creepage distance of porcelain bottles is 3.1 cm/kV, suitable for any area with an altitude of 3000 meters (Class II polluted area) or 1000 meters (Class IV polluted area) and below.

Mechanical characteristic parameters of ZW30-40.5 outdoor high-voltage vacuum circuit breaker:

serial number	name	unit	data
one	Contact switch	mm	20±2
two	overstroke		4±1
three	Allowable wear thickness of contacts		three
four	Average opening speed (0-12mm before contact buffer)	m/s	1.85-2.15	Measure at the pivot of the base
five	Average closing speed (full stroke 20mm)		0.7-1.0
six	Contact closing bounce time	ms	��3
seven	Three phase asynchronous disconnection		��2
eight	Three phase closing asynchrony		��2
nine	closing time		45-100
ten	Opening time		35-65
eleven	Resistance of each conductive circuit	�̦�	��40
twelve	Interphase center distance	mm	750±3

Product Technical Parameters:

parameter item		Product model
		ZW30-40.5
Rated voltage (kV)		forty point five
Rated current (A)		two thousand
Rated insulation level (kV)	Lightning impulse withstand voltage	one hundred and eighty-five
	power frequency withstand voltage	ninety-five
Rated short-time withstand current/rated short-circuit breaking current (kA)		25 31.5
Rated peak withstand current/rated short-circuit closing current (kA)		eighty
Open and close the current of a single capacitor bank (A)		six hundred and thirty
Rated out of step breaking current (kA)		eight
Rated operating sequence		Min-0.3s HeFen-180s HeFen
Accumulated breaking times under rated short-circuit breaking current (times)		twenty
Mechanical lifespan (times)		ten thousand
Rated short-circuit duration (s)		four
Leakage rate%/year		��1
Rated pressure of sulfur hexafluoride gas (pressure gauge at 20 ��)		0.02 MPa
Weight (kg)	Circuit breaker body	seven hundred and fifty
	Sulfur hexafluoride gas	zero point zero eight

ZW30-40.5 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW38-12 Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 20:01:38

ZW38-12 outdoor AC high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is an outdoor distribution equipment with a rated voltage of 12KV and three-phase AC 50Hz. Mainly used for opening and closing electronic systems
Load current, overload current, and short-circuit current. Suitable for protection and control in substations and distribution systems of industrial and mining enterprises, as well as places with frequent operation of rural power grids. It can also operate the segmented switch of the power grid, and after installing a controller, it can achieve distribution network automation.

Main Technical Parameters of ZW38-12 Outdoor AC High Voltage Vacuum Circuit Breaker

serial number	project	unit	parameter
one	rated voltage	KV	twelve
two	rated frequency	Hz	fifty
three	rated current	A	six hundred and thirty
four	Rated short-circuit breaking current	KA	twenty
five	Rated peak withstand current (peak)	KA	fifty
six	Rated short-term durability current	KA	twenty
seven	Rated short-circuit closing current (peak)	KA	fifty
eight	mechanical life	time	ten thousand
nine	Rated short-circuit breaking current breaking times	time	thirty
ten	Power frequency withstand voltage (1min): (wet) (dry) phase to phase, ground/fracture	KV	30/42/48
eleven	Lightning impulse withstand current (peak value) phase to phase, ground/fracture	KV	75/85
twelve	Secondary circuit 1-minute power frequency withstand voltage	KV	two

serial number	project	unit	parameter
one	Contact opening distance	mm	9±1
two	Contact overtravel	mm	2±0.5
three	Opening speed	m/s	1.0±0.2
four	closing speed	m/s	0.6±0.2
five	Contact closing bounce time	ms	��2
six	Center distance between phases	mm	340±1.5
seven	Three phase opening and closing asynchrony	ms	��2
eight	Resistance of each phase conductive circuit	�̦�	��80
nine	closing time	ms	25~45
ten	Opening time	ms	23~45

[Outdoor vacuum circuit breaker]ZW38-40.5 Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 20:01:30

ZW38-40.5 elevated porcelain column outdoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz high-voltage switchgear mainly used for control and protection of 40.5kV transmission and transformation systems. It can also be used for normal operation and short-circuit protection of urban and rural power grids and industrial and mining enterprises, and can be used as a connecting circuit breaker and opening and closing capacitor group.
This product is equipped with CT19-IVB spring energy storage operating mechanism, which can remotely control electric energy storage, electric opening and closing operations, as well as on-site manual energy storage, manual opening and closing operations.

Main features of ZW38-40.5 outdoor AC high-voltage vacuum circuit breaker

The vacuum arc extinguishing chamber with ceramic shell is placed inside a ceramic sleeve filled with 0.02/0.2MPa (without CT/with CT) SF6 gas at 20 ��, which can avoid the influence of external environment and is oil-free and resistant
Pollution, anti condensation, high breaking current, long electrical life. At rated voltage, the short-circuit current of 31.5kA can be continuously broken for 20 times, and the rated current is 2000A. The mechanical reliability is superior, with a mechanical life of 10000 times and the ability to operate frequently. According to user requirements, each product can be equipped with 6-12 current transformers.
The design performance of this product meets the requirements of the national standard GB1984 "AC High Voltage Circuit Breaker" and the requirements of the International Electrotechnical Commission standard IEC56 "High Voltage AC Circuit Breaker", and has a structure
Simple, small in size, and easy to install and maintain.

Environmental conditions for use
Environmental temperature: maximum temperature+40 ��; The minimum temperature is -30 ��.
Relative humidity: Daily average relative humidity �� 90%; Monthly average relative humidity �� 95%.
Altitude: Under normal usage conditions, the altitude should not exceed 1000m (referred to as flat prototype); Special usage conditions: altitude not exceeding 3000m (referred to as high prototype); The wind speed does not exceed 34m/s (corresponding to 700Pa on the surface of the cylinder); The seismic intensity shall not exceed 8 degrees (horizontal acceleration 0.25g, vertical acceleration 0.125g);
Air pollution level: Level IV; Minimum nominal creepage distance: 31mm/kV.

Main technical parameters of ZW38-40.5 outdoor AC high-voltage vacuum circuit breaker

Project Name	data
Rated voltage (kV)	forty point five
Rated current (A)	two thousand
Rated short-circuit breaking current (kA)	thirty-one point five
Rated short-circuit closing current (kA)	eighty
Rated short-circuit breaking current breaking times (times)	twenty
Rated out of step breaking current (kA)	eight
Breaking current of out of phase ground fault (kA)	twenty-seven point four
Rated operating sequence	Min-0.3s HeFen-180s HeFen
Rated short-circuit duration (s)	four
Rated short-time withstand current (kA)	thirty-one point five
Rated peak withstand current (kA)	eighty
Opening time (ms)	3.-65
Closing time (ms)	40-100
Average closing speed (m/s)	1.0±0.35
Average opening speed (m/s)	2.0±0.35
Contact closing bounce time (ms)	��8
Synchronization of three pole opening and closing (ms)	��3
Rated inflation pressure of SF6 gas (Mpa)	(Without CT) 0.02	(with CT) 0.2
Circuit breaker weight (kg)	(without CT) 750	1000/1150/1300 (6 CT/9 CT/12 CT)
Note: The circuit breaker is equipped with a CT19 spring operated mechanism, and its electrical schematic, wiring diagram, main technical parameters, and installation form of the mechanism are of the middle hanging type.

ZW38-40.5 Overall dimensions
ZW38-40.5 Elevated Ceramic Column High Layout Vacuum Circuit Breaker with Built in Current Transformer Outline Drawing

[Outdoor vacuum circuit breaker]ZW8A-12 series outdoor high-voltage vacuum circuit breaker

2026-6-10 20:01:21

The ZW8A-12 series outdoor high-voltage vacuum circuit breaker is a combination of ZW1-12 circuit breaker and isolation contact, called a combination circuit breaker, which can be used as a section switch. The operating mechanism of this series of products is the CT23 spring energy storage mechanism, which is divided into two types: electric and manual.

[Outdoor vacuum circuit breaker]ZW1A-12 series outdoor high-voltage vacuum circuit breaker

2026-6-10 20:01:12

ZW1A-12 outdoor high-voltage vacuum circuit breaker is a combination of ZW1-12 circuit breaker and isolation contact, called a combination circuit breaker, which can be used as a section switch. The operating mechanism of this series of products is the CT23 spring energy storage mechanism, which is divided into two types: electric and manual.

[Outdoor vacuum circuit breaker]ZW20-12 series vacuum circuit breaker

2026-6-10 20:01:03

1�� Overview
The ZW20-12 series vacuum circuit breaker is a high-voltage outdoor switchgear with a rated voltage of 12kV and three-phase AC 50Hz. It is mainly used to open and close load current, overload current, and short-circuit current of rural power grids, urban power grids, and small power systems. The overall structure of this product is a three-phase common box, with a three-phase vacuum arc extinguishing chamber placed inside a metal box. The transformer performance is reliable and the insulation strength is high. The operating mechanism of this series of products is spring energy storage type, which is divided into two types: electric and manual. The circuit breaker complies with the regulations of GBl804, DL403, GBll022 and other standards. Whether under normal use conditions or fault conditions (especially short-circuit situations), as long as it is within the technical parameters of the circuit breaker, it can ensure safe and reliable operation in the corresponding voltage level of the power grid.

2�� Normal operating conditions of ZW20-12 series vacuum circuit breaker
l�� Environmental temperature: -45 �� -+40 ��:
2. Altitude: not exceeding 1000m
3. Wind speed not exceeding 35m/s:
4. Relative temperature: daily average not exceeding 95%, monthly average not exceeding 90%:
5. Earthquake intensity not exceeding 8 degrees:
6. Places without fire, explosion, severe pollution, chemical corrosion, and severe vibration

3�� Main technical parameters of ZW20-12 series vacuum circuit breaker:

serial number	project	unit	Technical Requirements
one	rated voltage	KV	twelve
two	rated frequency	Hz	fifty
three	rated current	A	six hundred and thirty
four	Rated short-circuit breaking current	KA	twenty
five	Peak rated closing current	KA	fifty
six	Peak value of rated dynamic stability current	KA	fifty
seven	4S thermal stability current	KA	twenty
eight	Rated operating sequence		Fen-0.3S-180S-Fen
nine	Rated voltage of energy storage motor	V	AC220
ten	Maximum/minimum voltage of energy storage motor	V	AC242/187
eleven	Rated closing operation voltage	V	AC220
twelve	Maximum/minimum closing operation voltage	V	AC264/143
thirteen	Rated opening operation voltage	V	AC220
fourteen	Maximum/minimum voltage for opening operation	V	AC264/143
fifteen	Closing at different stages	ms	��2
sixteen	Open at different stages	ms	��2
seventeen	Rated pressure of SF6 gas (gauge pressure)	MPa	zero point zero one
eighteen	Rated short-circuit current breaking times	time	thirty
nineteen	mechanical life	time	ten thousand
twenty	Electrical lifespan	time	ten thousand

ZW20-12 series vacuum circuit breaker

[Outdoor vacuum circuit breaker]ZW8P-12/630-20 type outdoor prepaid metering vacuum circuit breaker

2026-6-10 20:00:55

ZW8P-12/630-20 outdoor prepaid metering vacuum circuit breaker is a three-phase AC 50Hz, rated voltage 12kV outdoor vacuum circuit breaker and metering integrated switchgear. It is matched with a three-phase multifunctional meter to realize the opening and closing of load current, overload current, and short-circuit current in the distribution system, and has a high-precision high-voltage metering device, realizing active energy meter, reactive energy meter, active demand meter, power factor meter, prepaid meter, recording, and automatic meter reading. Using international standard IC card RS485 interface, infrared communication, large screen LCD display technology, flexible preset of multiple functions, and IC card or handheld computer as a medium to achieve information transmission between users and power supply department computers. The power department can choose one or more transmission methods based on local conditions to facilitate computer network management and meet the needs of modern and scientific management for users in an effective and timely manner.

ZW8P-12/630-20 outdoor prepaid metering vacuum circuit breaker model and its meaning:

Usage environment:

1. Altitude: not exceeding 1000 meters (exceeding is considered high altitude).
2. Surrounding air temperature: -45 �� to+40 ��
3. Relative temperature: daily average not exceeding 95%, monthly average not exceeding 790%.
4. Wind speed: not exceeding 35m/s.
5. No flammable, explosive, chemical corrosion, or severe vibration hazards.

Main technical parameters of ZW8P-12/630-20 outdoor prepaid metering vacuum circuit breaker

Project			unit	numerical value
rated voltage			KV	twelve
Rated insulation level	1min power frequency withstand voltage	Dry test	KV	forty-two
		Wet test (ground test)		thirty-four
	Lightning impulse withstand voltage (peak value)			seventy-five
rated current			A	six hundred and thirty
rated frequency			Hz	fifty
Rated short-circuit breaking current			KA	16. 20
Rated short-circuit closing current (peak)				40, 50
Rated peak withstand current				40, 50
Rated short-circuit withstand current 4s				16. 20
operating sequence				Min-0.3s HeFen-180s HeFen
Rated short-circuit current breaking times			time	thirty
mechanical life			time	ten thousand
Secondary circuit 1min power frequency withstand voltage			kV	two
Rated current of overcurrent release device			A	five

The external dimensions and installation dimensions of ZW8-12/630-20 outdoor prepaid metering vacuum circuit breaker:

The external dimensions and installation dimensions of ZW8-12/630-20 outdoor combination transformer:

Ordering Notice:

1. Product model, name, rated voltage, current, breaking capacity, and protection against CT changes.
2. Combination transformer box current transformer variation, precision level, voltage transformer ratio, accuracy, whether capacity is required, three column and five column.
3. Technical requirements for control circuits.
4. Whether to configure external connection cables, specifications, models, and quantities.
5. Order quantity and accessories.
6. Equipped with manual or electric operating mechanisms, with optional operating voltages of AC110V, AC220V, DC110V, and DC220V; If the customer requests not to bring a combination transformer, in principle, the customer should provide their own operating power supply. The customer has a special request for the supplier to provide an operating power supply, which can be equipped with a built-in voltage transformer for supply.
7. Measurement CT and PT require dry built-in, and should be ordered according to special negotiation.

[Outdoor vacuum circuit breaker]ZW8Q-12 series outdoor dual power automatic conversion vacuum circuit breaker group

2026-6-10 20:00:46

The ZW8Q-12 series outdoor dual power automatic conversion vacuum circuit breaker group mainly consists of two ZW8 outdoor vacuum circuit breakers and a dual power automatic conversion controller. It is suitable for dual power supply systems with AC 50Hz, rated voltage 12kV and below, mainly powered by the main power supply. When the main power fails, it automatically switches to the backup power supply, and when the main power comes in, it automatically switches to the main power supply. This set of equipment is mainly used in important situations where power outages are allowed.

ZW8Q-12 series outdoor dual power automatic conversion vacuum circuit breaker group model and its meaning:

Usage environment:
1. Altitude: not exceeding 1000 meters (for high source type).
2. Surrounding air temperature: -45 �� to+40 ��.
3. Relative temperature: daily average not exceeding 95%, monthly average not exceeding 90%.
4. Wind speed: not exceeding 35m/s.
5. No flammable, explosive, chemical corrosion, or severe vibration hazards.

ZW8Q-12 series outdoor dual power automatic conversion vacuum circuit breaker group main technical parameters:

Project			unit	quantity
rated voltage			KV	twelve
Rated insulation level	1min power frequency withstand voltage	Dry test	KV	forty-two
		Wet test (ground test)		thirty-four
	Lightning impulse withstand voltage (peak value)			seventy-five
rated current			A	six hundred and thirty
rated frequency			Hz	fifty
Rated short-circuit breaking current			KA	16. 20
Rated short-circuit closing current (peak)				40, 50
Rated peak withstand current				40, 50
Rated short-circuit withstand current 4s				16. 20
operating sequence				Min-0.3s HeFen-180s HeFen
Rated short-circuit current breaking times			time	thirty
mechanical life			time	ten thousand
Secondary circuit 1min power frequency withstand voltage			kV	three
Rated current of overcurrent release device			A	five

The external dimensions and installation dimensions of ZW8Q-12 series outdoor single circuit breaker:

ZW8Q-12 series outdoor dual power switching controller external dimensions and installation dimensions:

Ordering Notice:
1. Product model, name, quantity, rated breaking current, and whether an isolation switch is included. Changes in current transformers, quantity, auxiliary power supply mode, and voltage levels for manual, electric, and electric operation of the operating mechanism.
2. Technical requirements and functional configuration of dual power automatic switching circuit breakers.
3. Delivery location and transportation method.
If users have special requirements, please consult with us to resolve them.

[Outdoor vacuum circuit breaker]ZW26-12 series outdoor high-voltage vacuum circuit breaker

2026-6-10 20:00:37

·Product Overview:

The ZW26-12 series outdoor high-voltage vacuum circuit breaker combines the advantages of domestic column mounted vacuum circuit breakers and avoids the disadvantages of three-phase public box type that may cause accidents in harsh external environments. Absorbing mature experience in circuit breakers from ABB and COOPER companies, leading in performance compared to similar domestic products. It better meets the needs of the electricity sector and is the new generation of outdoor high-voltage vacuum circuit breakers that China is leading in this field.

This circuit breaker is suitable for three-phase power systems with AC 50Hz of 12KV and below, and is used for breaking and closing load currents, overload currents, and short-circuit currents. It can also be combined with distribution automation devices to form reclosers, sectionalizers, and achieve "four remote" control functions, forming intelligent control equipment.
·Model and its meaning:

·Usage environment:
1. Altitude: not greater than 2000 meters (3000m is the height prototype).
2. Surrounding air temperature; Upper limit+40 ��, lower limit -40 ��.
3. Relative temperature: daily average not exceeding 95%, monthly average not exceeding 90%.
4. Wind speed: not exceeding 700Pa (equivalent to a wind speed of 34m/s).
5. Ice thickness: 10mm.
6. Earthquake intensity: not exceeding 8 degrees.
7. Pollution level: Level IV.
8. Condensation may occur inside and outside the box during high humidity periods when there is a sudden drop.

·Main technical parameters of ZW26-12 series outdoor high-voltage vacuum circuit breaker:

Project	unit	ZW26-12/630-20	ZW26-12/1250-20
stable voltage	KV	twelve	twelve
rated current	A	six hundred and thirty	one thousand two hundred and fifty
rated frequency	HZ	fifty	fifty
Rated short-circuit breaking current	KA	16. 20	twenty
Rated short-circuit breaking current breaking times	time	thirty	thirty
Rated short-circuit closing current (peak)	KA	40, 50	fifty
Rated peak withstand current	KA	40, 50	fifty
Rated short-time withstand current	KA	16. 20	twenty
Rated short-circuit duration	S	four	four
Power frequency withstand voltage for 1 minute	KV	forty-two	forty-two
Lightning impulse withstand voltage (peak value)	KV	seventy-five	seventy-five
Total breaking time	S	<0.125	<0.126
mechanical life	time	ten thousand	ten thousand
Rated operating sequence		Min-0.3s HeFen-180s HeFen	Min-0.3s-181s-18s-1 on-off
Secondary circuit withstand voltage for 1 minute	KV	two	two
Top operating voltage and auxiliary circuit	V	AC/DC 220V, 110V, 48V, 24V	AC/DC 220V, 110V, 48V, 25V
Overcurrent tripping current	A	five	five
Six DC resistors per phase	�̦�	��200	��200

·ZW26-12 series outdoor high-voltage vacuum circuit breaker external installation dimensions:

[Outdoor vacuum circuit breaker]ZW32A-12G Outdoor High Voltage Vacuum Circuit Breaker Isolating Switch Combination Electrical Appliance

2026-6-10 20:00:28

1. Overview
ZW32A-12G outdoor high-voltage vacuum circuit breaker with isolating switch combination (hereinafter referred to as the combination) is an outdoor high-voltage distribution equipment with three-phase AC 50Hz and 12kV, used for breaking and closing load current, overload current, and short-circuit current in power systems, and is more suitable for places with frequent operations.
Combination electrical appliances, using CTB spring operated mechanism, can achieve electric energy storage, electric opening and closing, as well as manual energy storage and manual opening and closing.
Combination electrical appliances have interlocking and obvious visible fractures, ensuring safe operation and reliable interlocking.
The arc extinguishing device of the composite electrical appliance adopts outdoor epoxy casting technology, which integrates the vacuum arc extinguishing chamber and the current transformer into a solid insulation phase column component. It is vertically arranged in a phase separated manner, maintenance free, oil-free, gas free, and pollution-free.
Combination electrical appliance, with surge control function for closing, meets control and measurement requirements, equipped with electronic control unit, and can achieve "four remote" monitoring. This product is the preferred choice for the oil-free transformation of urban and rural power grids.
2. Normal usage conditions
a) Altitude: not exceeding 2000m;
b) Surrounding air temperature: upper limit+40 ��, lower limit -40 ��;
c) The wind pressure shall not exceed 700Pa (equivalent to a wind speed of 34m/s);
d) The degree of air pollution (level) shall not exceed level III;
e) Any requirements beyond the above conditions shall be agreed upon by the user and the manufacturing unit.

3. Main Technical Parameters of ZW32A-12G Outdoor High Voltage Vacuum Circuit Breaker Isolating Switch Combination Electrical Appliance
3.1 Technical parameters of circuit breaker:

serial number	parameter name			unit	data
					12.5kA	16kA	20kA
one	rated voltage			kV	twelve
two	Rated insulation level	1-minute power frequency withstand voltage	Dry test		Interphase and ground 42, fracture 48
			wet test		External insulation 34
		Lightning impulse withstand voltage (peak value)			Interphase, ground 75, fracture 85
three	rated frequency			Hz	fifty
four	rated current			A	six hundred and thirty
five	Rated short-circuit breaking current			kA	twelve point five	sixteen	twenty
six	Rated short-circuit closing current (peak)				thirty-one point five	forty	fifty
seven	Rated peak withstand current				thirty-one point five	forty	fifty
eight	4s rated short-time withstand current				twenty-one point five	sixteen	twenty
nine	Rated operating sequence				Min-0.3s HeFen-180s HeFen
ten	Closing time/Opening time			ms	25��50/15��50
eleven	Rated short-circuit breaking current breaking times			time	thirty
twelve	mechanical life				ten thousand
thirteen	Control circuit and auxiliary circuit 1-minute power frequency withstand voltage			V	two thousand
fourteen	Rated operating voltage auxiliary circuit rated voltage				DC220�� AC220
fifteen	over-current release		rated current	A	five
			Accuracy of tripping current	%	±10
sixteen	Contact distance/contact stroke			mm	9±1/2±0.5
seventeen	Center distance between phases				340±1.5
eighteen	Average closing speed/average opening speed			m/s	0.6±0.2/1.2±0.3
nineteen	Contact closing bounce time/three-phase opening and closing synchronicity			ms	��2/��2
twenty	Resistance of each phase circuit			�̦�	��80

3.2 Technical parameters of isolation switch:

serial number	parameter name		unit	data
				16kA	20kA
one	rated voltage		kV	twelve
two	1-minute power frequency withstand voltage	Dry test		Interphase and ground 42, fracture 48
		wet test		External insulation 34
three	rated current		A	six hundred and thirty
four	rated frequency		Hz	fifty
five	Rated peak withstand current		kA	forty	fifty
six	4s rated short-time withstand current			sixteen	twenty
seven	Lightning impulse withstand voltage (peak value)		kV	seventy-five
eight	Circuit resistance (between circuit breaker terminal and isolation switch incoming board)		�̦�	��120
nine	When the three-phase knife switch is closed, the center offset		mm	��2
ten	Synchronization deviation of three-phase knife switch closing			��2
eleven	Fracture distance			��200
twelve	Insulation distance between conductive parts and the ground			��160

ZW32A-12G Outdoor High Voltage Vacuum Circuit Breaker Isolating Switch Combination Electrical Appliance

[Outdoor vacuum circuit breaker]ZW10-12 series outdoor high-voltage vacuum circuit breaker

2026-6-10 20:00:19

1�� Characteristics of ZW10-12 series outdoor high-voltage vacuum circuit breaker products

1. Special anti condensation measures are adopted internally to ensure insulation inside the box;
2. The rotation method adopts patented technology, which is easy to install and reliable to operate, avoiding the impact of mechanical failures on the performance of circuit breaking;
3. No oil filling, no inflation, small size, light weight, no need for maintenance.
4. High breaking current, no pollution, no need for maintenance.
5. The operation can be either electric or manual.

2�� ZW10-12 series outdoor high-voltage vacuum circuit breaker appearance and installation dimensions

1. Box 2, Product nameplate 3, Operating mechanism 4, Terminal letters 5, Insulator
6. Current transformer 7, on/off pointer 8, energy storage pointer 9, insulator 10, wiring terminal
11. Rear cover plate 12, manual energy storage handle 13, manual mechanism nameplate 14, manual closing pull ring
15. Manual closing pull ring 16, grounding bolt

Orders should specify:

Circuit breaker model, name, technical parameters, and quantity;
Is there a quantity and variation of isolation switches, current transformers for protection and measurement;
Operating mechanism voltage;
Names and quantities of spare parts and accessories;
Special usage conditions.

[Outdoor vacuum circuit breaker]ZW32 series outdoor high-voltage vacuum circuit breaker with isolation

2026-6-10 20:00:10

ZW32 series outdoor high-voltage vacuum circuit breaker with isolation

[Outdoor vacuum circuit breaker]ZW37-40.5 Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 20:00:02

1. The vacuum arc extinguishing chamber adopts patented sealing technology, with small volume, long service life, high reliability, good weather resistance, and easy transportation;
2. The operating mechanism adopts a miniaturized and highly reliable spring operating mechanism, with a simple structure and a mechanical life of up to 20000 times;
3. Adopting vacuum arc extinguishing, solid insulation, small size, light weight, high parameters, high performance, large breaking capacity, and high insulation level;
4. The design structure is reasonable, safe and reliable, and easy to debug and maintain;
5. It can be equipped with internal and external current transformers for measurement and protection, and external voltage transformers that can be flexibly equipped with remote control auxiliary contacts to meet the requirements of distribution automation

ZW37-40.5 Outdoor AC High Voltage Vacuum Circuit Breaker

serial number	name		unit	parameter
one	rated voltage		kV	forty point five
two	rated current		A	630��1250��1600��2000
three	Rated short-circuit breaking current		kA	twenty	twenty-five	thirty-one point five
four	Rated short-circuit closing current (peak)		kA	fifty	sixty-three	eighty
five	Rated short-time withstand current		kA	twenty	twenty-five	thirty-one point five
six	Rated peak withstand current		kA	fifty	sixty-three	eighty
seven	Rated short-circuit duration		S	four
eight	Rated insulation level	1-minute power frequency withstand voltage	kV	ninety-five
		Lightning impulse withstand voltage (peak value)		one hundred and eighty-five
nine	Rated operating sequence			Split -0.3s - Split -180s - Split - Split
ten	Rated short-circuit breaking current breaking times		time	twenty
eleven	Mechanical lifespan times		time	ten thousand
twelve	Rated operating voltage		V	220 (DC, AC)

[Outdoor vacuum circuit breaker]ZW43A-12 Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:59:52

ZW43A-12 Outdoor AC High Voltage Vacuum Circuit Breaker

1. The vacuum arc extinguishing chamber adopts patented sealing technology, with a large volume, long service life, high reliability, good weather resistance, and easy transportation;
2. The operating mechanism adopts a miniaturized and highly reliable spring operating mechanism, with a simple structure and a mechanical life of up to 20000 times;
3. Adopting vacuum arc extinguishing, solid insulation, small size, light weight, large breaking capacity, and high insulation level;
4. The switch housing is made of stainless steel or spray treated, with good corrosion resistance and weather resistance;
5. An external isolation switch can be added to form a visible fracture and reliable interlocking, forming a composite electrical device;
6. It can be matched with the controller to achieve the "four remote" functions of remote control, telemetry, remote signaling, and remote adjustment.

[Outdoor vacuum circuit breaker]ZWAT��-12 Type Outdoor AC High Voltage Special Safety Vacuum Circuit Breaker

2026-6-10 19:59:44

ZWAT �� -12 outdoor AC safety special high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 12kV and three-phase AC 50HZ. Mainly used for breaking and closing load current, overload current, and short-circuit current in power systems.

Suitable for protection and control in substations, industrial and mining enterprises, as well as urban and rural power grids, especially suitable for distribution network systems where urban overhead lines are converted to cable lines that enter the ground.

Product features: 1 The shielded EMPD rubber encapsulates, isolates, and shields the internal high-voltage components (vacuum arc extinguishing chamber, conductive circuit). EPDM rubber is specially treated and undergoes antioxidant treatment to ensure long-term safety performance.
2. Vacuum arc extinguishing chamber
Adopting a miniaturized vacuum arc extinguishing chamber equipped with high performance, high parameters, and low main circuit resistance value.
3. Insulation rod
It connects the spring operating mechanism and the vacuum arc extinguishing chamber contact, and this design includes a unique high dielectric performance. In order to ensure reliable insulation voltage performance, a soft silicone rubber seal is used instead of the traditional SMC insulation rod form.
4. Compact structure and light weight
Taking advantage of the higher insulation strength of EPDM rubber compared to SF6, oil, or air, this product has eye-catching features of small size and light weight. It can be installed in crowded cable trenches and within the smallest walls, and can be installed through doorways and artificial skylights. The MVI segmenter can be installed at any position. For example, floors, ceilings, and walls. Ensure the best connection and operation.
5. Spring structure
High reliability, miniaturized spring operating mechanism, with a mechanical lifespan of up to 20000 cycles
6. Switch casing
Adopting stainless steel shell and formed sealing groove to ensure rust resistance and sealing.
7. Fully sealed and submersible
Pollution, rust, or continuous flooding will not affect the switch. The stainless steel exterior and EP rubber ensure that the vacuum arc extinguishing chamber is not affected.
8. Maintenance free design
Adopting EP rubber solid insulation solves the maintenance of oil level, gas pressure or shell. The vacuum arc extinguishing chamber has been confirmed to be maintenance free through cyclic testing.
9. Widely applicable
This product can be used in harsh operating environments such as underwater (water depth of 2m, within 72 hours), severe pollution, and humidity, and can also be installed

[Outdoor vacuum circuit breaker]ZW12-40.5 outdoor vacuum circuit breaker

2026-6-10 19:59:34

ZW12-40.5 outdoor vacuum circuit breaker (hereinafter referred to as the circuit breaker) is an outdoor switchgear with a rated voltage of 40.5KV and three-phase AC 50Hz. It is a product manufactured with advanced foreign technology. The operating mechanism of this circuit breaker is a spring energy storage type, which can be operated electrically or manually. There are two types of electric operation: AC or DC.

[Outdoor vacuum circuit breaker]ZW20A-12/630-20 Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:59:26

1. Adopting vacuum arc extinguishing and SF6 insulation, with small volume and large capacity;
2. The operating mechanism adopts a miniaturized and highly reliable spring operating mechanism, with a simple structure, flexible and convenient operation, and superior breaking performance;
3. Adopting patented sealing technology and explosion-proof devices, oil-free medium, with high reliability and safety;
4. The installation method is flexible and can be lifted or seated;
5. Unique incoming and outgoing wiring methods effectively ensure the external insulation characteristics of the switch;
6. It can be matched with the controller to achieve the "four remote" functions of remote control, telemetry, remote signaling, and remote adjustment.

ZW20A-12/630-20 Outdoor AC High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW1-12 Outdoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:59:17

ZW1-12 Outdoor AC High Voltage Vacuum Circuit Breaker

Voltage transformer, providing operating power without the need for an additional power supply;
After the power is turned on, one opening operation can be performed;
• Low operating power and high reliability;
Output current and voltage signals for metering or remote automatic control;
In the control box, there are signal interfaces and on/off indication interfaces that can be used in conjunction with various FTUs, equipped with modulation and demodulation devices, and used in conjunction with urban network automation equipment to achieve "three remote" or "four remote" control;

1. Overview
ZW1-12 series outdoor AC high-voltage vacuum circuit breaker is a three-phase AC 50Hz outdoor device with a rated voltage of 12kV. It is mainly used in 12kV systems of rural and urban networks, as well as for load current, overload current, and short-circuit current. It can also be used in other similar places.
2. Environmental conditions for use
Environmental temperature:+40 �� to -30 ��.
Altitude: 2000m.
Relative humidity of the air: daily average not exceeding 95%
The monthly average is not greater than 90%
The daily average saturated vapor pressure shall not exceed 2.2 × 10-3MPa
The monthly average value shall not exceed 1.8 × 10-3MPa.
Wind pressure not exceeding: 700Pa
The seismic intensity shall not exceed 8 degrees.
Places without fire, explosion, serious pollution, chemical corrosion, and severe vibration

3. Technical parameters of ZW1-12 outdoor AC high-voltage vacuum circuit breaker
The main electrical parameters are shown in Table 1 below

serial number	name		unit	data
one	rated voltage		kV	twelve
two	Rated Absolute Edge level	1-minute power frequency withstand voltage		forty-two
		Lightning impulse withstand voltage		seventy-five
three	rated current		A	six hundred and thirty
four	Rated short-circuit breaking current		kA	6.3��12.5
five	Rated short-circuit closing current (peak)			16��31.5
six	Rated dynamic stable current			16��31.5
seven	4s rated thermal stability current			6.3��12.5
eight	Rated short-circuit breaking current breaking times		time	thirty
nine	Rated operating sequence			Min-0.3s HeFen-180s HeFen
ten	mechanical life		time	ten thousand
eleven	Current Transformer Ratio			100/5��200/5�� 400/5��800/5,1600/5

4. Structure and Characteristics
A circuit breaker consists of a conductive circuit, an insulation system, sealing components, and a housing. The overall structure is a three-phase common box. The conductive circuit is composed of conductive poles for incoming and outgoing lines, conductive clamps for dynamic and static end supports, and vacuum arc extinguishing chambers. The external insulation is mainly achieved through high-voltage porcelain sleeves, which have anti pollution ability. The internal insulation is composite insulation, mainly achieved through transformer oil inside the box, and also solves the condensation problem inside outdoor products. The operating mechanism of this circuit breaker can be equipped with a delay device according to user needs to solve the surge phenomenon that occurs during switch operation. According to user requirements, installing outdoor isolation switches can form obvious isolation fractures, making maintenance and use more convenient and safe.

5. Ordering Notice
It should be noted that:
Circuit breaker model specifications, name, operating method, matching current transformer ratio, and quantity.
The external dimensions and installation dimensions are shown in the following figure:

Figure a 1. Lifting ring 2. Ceramic sleeve 3. Box cover 4. Sealing element 5. Lifting earrings 6. Box body 7. Oil drain valve 8. Conductive rod 9. Oil gauge
10. Oil injection hole 11. Opening and closing indicators 12. Operating mechanism 13. Brand name

3.2 The circuit breaker body of this product consists of a conductive circuit, an insulation system, a sealing component, and a housing. The overall structure is a three box common box. The conductive circuit is composed of an inlet and outlet conductive rod, a dynamic and static end support, a conductive clamp, and a vacuum arc extinguishing connection. The external insulation is mainly achieved through a high-voltage ceramic sleeve, which has anti pollution ability; The internal insulation is composite insulation, mainly achieved through transformers, oil, etc. inside the box, while also solving the condensation problem inside outdoor products.
The operating mechanism has manual energy storage, manual opening and closing, overcurrent protection and other functions, while its electric motor has electric or manual energy storage, electric or manual opening and closing, overcurrent protection and other functions.

Serial number	Project Name		Unit	standard			Remarks
one	rated voltage		KV	twelve
two	rated current		A	six hundred and thirty
three	Power frequency withstand voltage (1 minute)		KV	forty-two			Type Test 47
four	Lightning impulse withstand voltage (peak value)		KV	seventy-five			Type test 84
five	Rated short-circuit breaking current		KA	six point three	twelve point five	sixteen
six	Rated short-circuit closing current (peak)		KA	sixteen	thirty-one point five	forty
seven	4-second short-time withstand current		KA	six point three	twelve point five	sixteen
eight	Rated peak withstand current		KA	sixteen	thirty-one point five	forty
nine	Rated operating sequence			Min-0.3 seconds - on-off -180 seconds - on-off
ten	Rated short-circuit current breaking times		time	thirty
eleven	mechanical life		time	ten thousand
twelve	Rated operating voltage (equipped with CT mouth type spring operating mechanism)	trip coil	��	DC or AC 220
		closing coil
thirteen	Allowable wear thickness for dynamic and static contacts		mm	three	four	four
fourteen	Total weight		kg	one hundred and sixty

ZW1-12 Outdoor AC High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW27-12 outdoor vacuum circuit breaker

2026-6-10 19:59:08

ZW27-22 outdoor AC vacuum circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 12kV and three-phase AC 50Hz. Mainly used for breaking and closing load current, overload current, and short-circuit current in power systems.

ZW27-22 outdoor vacuum circuit breaker is suitable for protection and control in substations, industrial and mining enterprises, as well as urban and rural power grids. It is particularly suitable for places with frequent operations and urban network automation distribution networks.

ZW27-22 Outdoor Vacuum Circuit Breaker Product Features:

1. Use a vacuum arc extinguishing chamber.
2. Adopt air silicone rubber and engineering plastic composite insulation.
3. Voltage transformers can be installed inside the switch to provide operational power and voltage sampling.
4. The plan is flexible and can reserve interfaces for automatic distribution, facilitating the development of distribution automation.

Structural features: (P17)

1. Use a vacuum arc extinguishing chamber to extinguish the arc.
2. Using air? Silicone rubber and engineering plastic composite insulation avoid the possibility of insulation accidents caused by oil degradation in oil insulation.
3. Combined with the controller, it can be used as an automatic recloser or automatic segmenter.

serial number	name		unit	numerical value
one	rated voltage		kV	twelve
two	Rated insulation level (altitude 2000m)	1-minute power frequency withstand voltage (inter electrode, ground/fracture)		dry-type	forty-two
		Lightning impulse withstand voltage (between poles, to ground)		wet type	thirty-four
		Lightning impulse withstand voltage (fracture)		seventy-five
three	rated frequency		Hz	eighty-five
four	rated current		A	fifty
five	Rated short-circuit breaking current		kA	630, 1000, 1250
six	Rated operating sequence		/	12.5, 16, 20, 25
seven	Rated short-circuit current breaking times		time	O-0.3s-CO-180s-CO
eight	Rated short-circuit closing current (peak)		kA	thirty
nine	Rated peak withstand current			31.5, 40, 50, 63
ten	Rated short-time withstand current			12.5, 16, 20, 25
eleven	Total breaking time		s	��0.125
twelve	Rated short-circuit duration			four
thirteen	mechanical life		time	ten thousand
fourteen	Contact operating voltage and rated voltage of auxiliary circuit		V	AC or DC 220
fifteen	Rated current of overcurrent release device		A	five

[Outdoor vacuum circuit breaker]KMG-01 Outdoor household circuit breaker

2026-6-10 19:59:00

KMG-01 Outdoor Household Circuit Breaker

After switching from overhead lines to insulated lines, line faults have been greatly reduced. In order to simplify relay protection, the center point of the transformer is grounded through a small resistor. In this case, when the single-phase grounding current reaches a certain value, the feeder circuit breaker of the substation will trip, causing a power outage of the entire line. In order to prevent user faults from being reflected in the substation (or higher-level circuit breaker), a household circuit breaker (referred to as a watchdog) is installed at the user entrance. When there is a fault in the user's internal circuit, the household circuit breaker trips, isolating the user's internal fault from the main circuit. The controller determines the user's working status based on the current parameters emitted by the circuit breaker. When the current exceeds the rated set value, it issues a trip command to trip the circuit breaker. In this way, the fault point can be located in the fault section. That is to say, internal faults within the user will not affect the entire line.

Product features of KMG-01 outdoor household circuit breaker:

1. Adopt air silicone rubber and engineering plastic composite insulation.
2. Voltage transformers can be installed inside the switch to provide operational power and voltage sampling.
3. The plan is flexible and can reserve interfaces for automatic distribution, facilitating the development of distribution automation.
4. The incoming and outgoing lines are arranged in an "L" shape.
5. Combined with the controller, it can be used as an automatic recloser or automatic segmenter.
6. After the voltage transformer loses voltage, at least one opening operation shall be performed by the built-in capacitor

[Outdoor vacuum circuit breaker]FDZ��-12/T630-20 Type High Pressure Vacuum Automatic Segmenter

2026-6-10 19:58:51

The FDZ �� -12/T630-20 AC high-voltage vacuum column dry automatic sectionalizer (hereinafter referred to as the sectionalizer) is used in a 50Hz, 12kV three-phase distribution network and is an intelligent switchgear. This segmenter, when used in conjunction with a recloser, can independently handle faults in the distribution network without relying on other control systems, and can minimize the area of power outages caused by faults. This product consists of a segmenter body and an electronic controller.

The main body of the segmenter is an outdoor vacuum load switch with an isolation switch, which can be used to open and close load currents, circulating currents in the ring network, inductive currents of no-load transformers, and capacitive currents of capacitor banks (or cable lines); It can also close the short-circuit current and withstand the electric and thermal effects caused by short-circuit current.

The incoming end of the segmenter body is equipped with a current transformer, which provides source information for the operation of the controller. The primary current of the current transformer can be made into 50-630A according to the user's requirements; the secondary current can be made into 5A or 1A.

[Outdoor vacuum circuit breaker]ZW32-12 Outdoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:58:42

ZW32-12 Outdoor High Voltage Vacuum Circuit Breaker

ZW32-12 outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is used in three-phase power systems with AC 50HZ and voltage of 10-12KV. It is used for breaking and closing loads, and has overload and short-circuit protection functions, meeting control and measurement requirements. It can also achieve remote control, monitoring, etc. Suitable for protection and control in power distribution systems of substations and industrial and mining enterprises, as well as frequent operation sites in rural power grids.

1.3 Model Meaning

2. Environmental conditions for use
a. Surrounding air temperature: upper limit+40 ��, lower limit -30 ��
b. Altitude �� 2000m (if altitude needs to be increased, the rated insulation level will be correspondingly increased);
c. Wind pressure: not exceeding 700pa (equivalent to a wind speed of 34m/s)
d. Amplitude: seismic intensity of 8 degrees;
e. Pollution level: Level III
f. Maximum daily temperature difference: not exceeding 25 ��

Technical parameters of ZW32-12 outdoor high-voltage vacuum circuit breaker

serial number	name			Unit	data
one	rated voltage			KV	twelve
two	Rated insulation level	1-minute power frequency withstand voltage	Dry test		forty-two
			Warm test		thirty-four
		Lightning impulse withstand voltage (peak value)			seventy-five
three	rated current			A	630:400:200
four	Rated short-circuit breaking current			KA	20:16:12.5
five	Rated operating sequence				Split -0.3- Split -180s - Split
six	Rated short-circuit breaking current times			time	thirty
seven	Rated short-circuit closing current (peak)			KA	fifty
eight	Rated peak withstand current
nine	Rated short-time withstand current				twenty
ten	Rated short-circuit duration			S	four
eleven	Opening time (excitation trip)		Maximum operating voltage	ms	20-45
			Rated operating voltage
			Minimum operating voltage
twelve	closing time
thirteen	Total breaking time				25-50
					��100
fourteen	arcing time				��20
fifteen	mechanical life			time	ten thousand
sixteen	Closing power			J	seventy
seventeen	Rated input power of energy storage motor			W	��40
eighteen	Rated operating voltage and rated voltage of auxiliary circuit			V	DC220
					AC220
nineteen	Energy storage time at rated voltage			S	<10
twenty	over-current release		rated current	A	five
			Accuracy of tripping current	%	±10

Outline and Installation Dimensional Drawing of ZW32-12 Outdoor High Voltage Vacuum Circuit Breaker

ZW32-12 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW8-12 Outdoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:58:34

1 Overview
ZW8-12 outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is used in three-phase power systems with AC 50Hz-12kV. It can switch on and off the load current, overload current, and short-circuit fault current of the circuit. It is a control and protection device for indoor power grids. When the circuit breaker is combined with an isolation switch (hereinafter referred to as a combination circuit breaker), it can be used as a section switch.
2. Environmental conditions for use
a. Environmental temperature -40 �� to+40 ��;
b. The altitude shall not exceed 2000mm, and any altitude above 2000mm shall be negotiated with the user;
c. The wind pressure shall not exceed 700Pa (equivalent to a wind speed of 34m/s);
d. The daily average relative humidity should not exceed 95%, and the monthly average should not exceed 90%
e. Air pollution level III;
f. The surrounding air should not be significantly polluted by corrosive or flammable gases;
g. No frequent vigorous exercise;
h. As an insulating medium, silicone rubber should comply with the requirements of GB655386 for the intended use.

Main technical parameters of ZW8-12 outdoor high-voltage vacuum circuit breaker
3.1 Rated Parameters

serial number	Project			unit	Parameters
one	rated voltage			KV	twelve
two	rated current			A	six hundred and thirty
three	rated frequency			HZ	fifty
four	Power frequency withstand voltage			KV	forty-two
five	Lightning impulse voltage (peak value)			KV	seventy-five
six	Rated short-circuit breaking current			KA	twelve point five	sixteen	twenty
seven	Rated short-circuit closing current (peak)			KA	thirty-one point five	forty	fifty
eight	Rated short-time withstand current			KA	twelve point five	sixteen	twenty
nine	Rated peak withstand current			KA	thirty-one point five	forty	fifty
ten	Rated operating sequence				Split -0.3S - Split -180S Split
eleven	Rated short-circuit current breaking times			time	thirty
twelve	mechanical life			time	ten thousand
thirteen	Allowable cumulative thickness of wear for moving contacts			mm	three
fourteen	Rated operating voltage Equipped with CT type spring operating mechanism		closing coil	V	DC or AC 110, 220
			trip coil
fifteen	Rated working current of overcurrent trip coil			A	five
sixteen	energy storage motor	Customized voltage		V	DC or AC 110, 220
		power		W	��200
seventeen	weight			Kg	one hundred and fifty

3.2 Mechanical characteristic parameters

serial number	Project	Unit	Parameters
one	Contact opening distance	mm	11±1
two	Contact stroke	mm	3±0.5
three	Average opening speed	m/s	1±0.4
four	Average closing speed	m/s	0.65±0.15
five	Closing bounce time	ms	��2
six	Three phase opening synchronicity	ms	��2
eight	closing time	ms	��0.1
nine	Opening time	ms	��0.1
ten	Main circuit resistance of each pole	��	��200

Appearance and installation dimensions of 4ZW8-12 outdoor high-voltage vacuum circuit breaker

ZW8-12 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW6-12 Outdoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:58:25

main purpose
1�� ZW6-12/630 outdoor high-voltage vacuum circuit breaker is suitable for use in three-phase AC 50HZ, rated 12KV power grids. It is used for dividing and closing load currents, overload currents, and closing and breaking currents, and can also be used as a section switch for 12KV urban or rural power grids.
2�� This product operates in a reclosing state and, when equipped with a suitable control system, can be used as a recloser or segmenter in power lines.
3�� It can be independently applied to small and medium-sized substations, with the characteristics of reducing land occupation and saving investment.
4�� Whether used in power lines or in substations, there are smart units that can be equipped with grid automation and PW to achieve local and remote control.
Usage environment
1�� Surrounding air temperature: upper limit of 40 ��, lower limit of -40 ��;
2�� Altitude �� 2000m;
3�� Wind pressure: not exceeding 700pa (equivalent to a wind speed of 34m/s);
4�� The earthquake intensity shall not exceed magnitude 8.

Technical parameters of ZW6-12 outdoor high-voltage vacuum circuit breaker

moon	Technical parameter name		unit	Technical Specifications
				16KA	20KA
one	rated voltage		KV	twelve
two	rated current		A	six hundred and thirty
three	1-minute power frequency withstand voltage	Dry test	KV	forty-two
		Warm test	KV	thirty
four	Lightning impulse withstand voltage (peak value)		KV	seventy-five
five	Rated short-circuit breaking current		KA	sixteen	twenty
six	Rated short-circuit closing current (peak)		KA	forty	fifty
seven	Rated peak withstand voltage		KA	forty	fifty
eight	4S short-time withstand voltage		KA	sixteen	twenty
nine	Rated operating sequence			Split -0.3s Split -180S Split - Split
ten	Rated short-circuit current rise and break times		time	thirty
eleven	mechanical life		time	ten thousand
twelve	Rated voltage of energy storage motor		V	AC/DC 110.220
thirteen	Rated operating voltage	trip coil	V	AC/DC 110.220
		closing coil
fourteen	Allowable wear thickness of dynamic and static contacts		mm	three
fifteen	Contact opening distance		mm	9±1
sixteen	Contact overtravel		mm	3±1	3±1
seventeen	Average closing speed		m/s	0.6±0.2
eighteen	Average opening speed		m/s	1.0±0.2	1.1±0.2
nineteen	Bounce time of Heku		ms	��2
twenty	Three phase disconnection at different stages		ms	��2	��2
twenty-one	Opening time (equipped with CT type spring operating mechanism)		s	��0.1
twenty-two	Closing time (equipped with CT type spring operating mechanism)	Maximum operating voltage	s	��0.06
		Minimum operating voltage		��0.1
twenty-three	DC resistance of each phase circuit		U��	��200
twenty-four	Center distance between phases		mm	one hundred and ninety-three

ZW6-12 Outdoor High Voltage Vacuum Circuit Breaker Outline and Installation Dimensional Drawing

ZW6-12 Outdoor High Voltage Vacuum Circuit Breaker

[Outdoor vacuum circuit breaker]ZW8-12/T Type PT Outdoor Vacuum Circuit Breaker

2026-6-10 19:58:16

ZW8-12/T-type PT outdoor vacuum circuit breaker electronic PI type outdoor high-voltage vacuum circuit breaker (hereinafter referred to as electronic PI type circuit breaker) is used in three-phase power systems with AC 50HZ and voltage of 10-20Kv. It is used for breaking and closing load currents, and has surge, overcurrent, and quick break protection functions. It can store energy and perform multiple opening and closing operations in the event of 10KV power outage, achieving remote control and remote wired control and distribution network electrification. It can also serve as an in station incoming and outgoing line switch as well as an off station scattered switch without power supply, achieving ring network power supply. It is an intelligent switch that integrates power protection control and communication.

[Outdoor vacuum circuit breaker]ZW7-40.5 series outdoor high-voltage vacuum circuit breaker

2026-6-10 19:58:07

Scope of application:
The ZW7 series circuit breaker is suitable for use in three-phase AC 50Hz, 40.5kV power systems as a means of breaking and closing load currents, overload currents, and short-circuit currents. It can be used for the control and protection of power equipment and power lines in power plants and substations, as well as in places with frequent operations. It is an ideal product for the upgrading and replacement of the oil-free transformation of the 40.5kV old substation.

ZW7-40.5 series outdoor high-voltage vacuum circuit breaker model:

ZW7-40.5 outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is used in three-phase power systems with AC 50Hz and voltage of 40.5kv, for breaking and closing load current, overload current, and short-circuit current.
a�� Adopting vacuum arc extinguishing, with strong breaking ability, long electrical life, and mechanical life of 10000 times:
b�� Simple structure, maintenance free, long maintenance free cycle;
c�� Good insulation performance and strong anti pollution ability;
d�� Can be equipped with spring or electromagnetic operating mechanism, reliable mechanical performance, and can be operated frequently; No fire and explosion hazards;
e�� The internal current transformer has a measurement accuracy of 0.2 level and can achieve three-phase differential protection;
f�� Equipped with a leakage controller, it can protect the circuit breaker from reliable operation under certain temperature and humidity conditions.

a. Surrounding air temperature: upper limit+40 ��, lower limit -30 �� (general areas), -40 �� (high-altitude areas);
b. Altitude: �� 1000m (if altitude needs to be increased, the rated insulation level should be correspondingly raised);
c. Wind pressure: not exceeding 700pa (equivalent to a wind speed of 34m/s);
d. Amplitude: The seismic intensity does not exceed 8 degrees;
e. Pollution level: Level III;
f. Maximum daily temperature difference; Not exceeding 25 ��

3�� Main technical parameters of ZW7-40.5 series outdoor high-voltage vacuum circuit breaker

serial number	name			unit	data
one	rated voltage			KV	forty point five
two	Rated insulation level	1-minute power frequency withstand voltage	Dry test		ninety-five
			wet test		eighty
		Lightning impulse withstand voltage (peak value)			one hundred and eighty-five
three	rated current			A	1250; 1600; two thousand
four	Rated short-circuit breaking current			KA	20;25; thirty-one point five
five	Rated operating sequence				Min-0.3s HeFen-180s HeFen
six	Rated short-circuit breaking current times			time	twelve
seven	Rated short-circuit closing current (peak)			KA	50;63; eighty
eight	Rated peak withstand voltage
nine	Rated short-time withstand current				20;25; thirty-one point five
ten	Rated short-circuit duration			S	four
eleven	Average opening speed			M/S	1.5±0.2
twelve	Average closing speed				0.7±0.2
thirteen	Contact closing bounce time			MS	�ܣ�
fourteen	Three phase closing (opening) synchronization time difference				�ܣ�
fifteen	closing time				��150
sixteen	Opening time				��60
seventeen	mechanical life			time	ten thousand
eighteen	Rated operating voltage and rated voltage of auxiliary circuit			V	DC 110/220
					AC 110/220
nineteen	Direct resistance of each static circuit (excluding transformers)			�̦�	��100
twenty	Allowable wear thickness of dynamic and static contacts			MM	three
twenty-one	weight			KG	eight hundred

ZW7-40.5 series outdoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]EVS1P-12/T1250-40 type vacuum circuit breaker

2026-6-10 19:56:35

EVS1P-12/T1250-40 vacuum circuit breaker

Technical Specifications

serial number	name		unit	Numerical value
one	rated voltage		kV	twelve
two	Rated insulation level	1-minute power frequency withstand voltage	kV	forty-two
		Impulse withstand voltage (peak value)		seventy-five
three	rated current		A	one thousand two hundred and fifty
four	Rated short-circuit breaking current		kA	forty
five	Rated short-circuit closing current (peak)			one hundred
six	Rated peak withstand current			one hundred
seven	Rated short-time withstand current			40
eight	Electrical lifespan		time	thirty
nine	Rated short-circuit current duration		s	four
ten	Rated operating sequence			Min-0.3s HeFen-180s HeFen
eleven	mechanical life		time	twenty thousand
twelve	Rated breaking current of a single capacitor bank		A	six hundred and thirty
thirteen	Rated back-to-back capacitor bank breaking current		A	four hundred

EVS1P-12/T1250-40 vacuum circuit breaker

[Indoor vacuum circuit breaker]EVS1P-12/T1250-31.5 type vacuum circuit breaker

2026-6-10 19:56:26

The EVS1P-12/T1250-31.5 vacuum circuit breaker is an indoor device with a rated voltage of 12kV and a three-phase AC frequency of 50Hz. It can be used for controlling and protecting electrical facilities in industrial and mining areas, enterprises, power plants, and substations. This product complies with the relevant provisions of GB1984-2003 "High Voltage AC Circuit Breakers", JB3855 "Indoor High Voltage AC Vacuum Circuit Breakers", DL403 "Technical Conditions for Ordering 10-35kV Indoor High Voltage Vacuum Circuit Breakers" and IEC62271-100:2001 "High Voltage AC Circuit Breakers".
The EVS1P-12/T1250-31.5 series indoor high-voltage vacuum circuit breaker can be installed in both mobile and fixed switchgear. This circuit breaker has the advantages of long service life, simple maintenance, no pollution, no explosion hazard, low noise, and is suitable for harsh working conditions such as frequent operation.
Product Structure Features ��
The EVS1P-12/T1250-31.5 vacuum circuit breaker arranges the arc extinguishing chamber and the operating mechanism on a irregular frame, that is, an integrated layout. This structural design can make the operating performance of the operating mechanism more in line with the required performance of the arc extinguishing chamber opening and closing, reduce unnecessary intermediate transmission links, lower energy consumption and noise, and make the operating performance of the circuit breaker more reliable. Users can directly put it into operation without adjustment. The EVS1P-12/T1250-31.5 indoor high-voltage vacuum circuit breaker can be installed in both mobile and fixed switchgear.
The main circuit of the circuit breaker adopts a structure in which a vacuum arc extinguishing chamber is sealed inside the insulated pole. The vacuum arc extinguishing chamber is longitudinally sealed inside a tubular insulation cylinder, which is cast from epoxy resin using APG technology. This structural design not only prevents the vacuum arc extinguishing chamber from being damaged by external factors, but also ensures that it can exhibit high resistance to voltage effects even in humid, hot, and severely polluted environments.
The operating mechanism is an independent spring energy storage type, with manual and electric energy storage functions. The operating mechanism is placed inside the chassis in front of the arc extinguishing chamber and has a clamp plate structure.

Technical parameters of EVS1P-12/T1250-31.5 vacuum circuit breaker:

serial number	name		unit	Numerical value
one	rated voltage		kV	twelve
two	Rated insulation level	1-minute power frequency withstand voltage	kV	forty-two
		Impulse withstand voltage (peak value)		seventy-five
three	rated current		A	one thousand two hundred and fifty
four	Rated short-circuit breaking current		kA	thirty-one point five
five	Rated short-circuit closing current (peak)			eighty
six	Rated peak withstand current			eighty
seven	Rated short-time withstand current			thirty-one point five
eight	Electrical lifespan		time	thirty
nine	Rated short-circuit current duration		s	four
ten	Rated operating sequence			Min-0.3s HeFen-180s HeFen
eleven	mechanical life		time	twenty thousand
twelve	Rated breaking current of a single capacitor bank		A	six hundred and thirty
thirteen	Rated back-to-back capacitor bank breaking current		A	four hundred

EVS1P-12/T1250-31.5 vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN90-40.5/T2000-31.5 Indoor vacuum circuit breaker

2026-6-10 19:56:17

ZN90-40.5/T2000-31.5 Indoor Vacuum Circuit Breaker

The ZN90-40.5 fully assembled vacuum circuit breaker provides users with the opportunity to choose technologically advanced vacuum circuit breaker manufacturing technology
Leading technological means are the guarantee of high reliability
Excellent overall structure
Easy user operation
Design that is easy to operate and inspect, requiring minimal maintenance
The perfect anti misoperation locking design provides safety assurance for operators

Technical parameters of ZN90-40.5/T2000-31.5 indoor vacuum circuit breaker

Serial number	Project			unit	data
one	rated voltage			kV	forty point five
two	Rated insulation level	Short term (1-minute) power frequency withstand voltage			ninety-five
		Lightning impulse withstand voltage (peak value)			one hundred and eighty-five
three	rated frequency			Hz	fifty
four	rated current			A	1250��1600��2000
five	Rated short-time withstand current			kA	25, 31.5
six	Rated peak withstand current				63, 80
seven	Rated short-circuit duration			s	four
eight	Rated short-circuit breaking current			kA	25, 31.5
nine	The specified value of expected transient recovery voltage	Test Method 4		kV	sixty-nine point five
		Test Method 3			seventy-four point five
		Test methods 1 and 2			seventy-four point five
ten	Rated short-circuit closing current			kA	63, 80
eleven	Rated operating sequence				O-0.3s-CO-180s-CO
twelve	rated time parameter	Opening time		ms	50±15
		closing time			65±15
		Combination and division time			��150
		Cut off time			��90
		arcing time			��15
thirteen	Rated short-circuit breaking current breaking times			time	thirty
fourteen	mechanical life				ten thousand
fifteen	Rated operating voltage of closing and opening coils			V	AC:110��220
					DC:110��220
sixteen	Rated earth fault breaking current for different phases			kA	21.8, 27.3
seventeen	Rated breaking current of a single capacitor bank			A	six hundred and thirty
eighteen	Rated back-to-back capacitor bank breaking current				four hundred
nineteen	Rated capacitor Group closing surge	Single capacitor group	peak	kA	twelve point five
			frequency	Hz	��1000
		back-to-back capacitor bank	peak	kA	eight
			frequency	Hz	��1000

[Indoor vacuum circuit breaker]EVH1A-40.5/T2500-31.5 type solid sealed pole vacuum circuit breaker

2026-6-10 19:56:09

EVH1A-40.5/T2500-31.5 Solid Sealed Pole Vacuum Circuit Breaker

The EVH1A-40.5/T2500-31.5 solid sealed pole vacuum circuit breaker is an indoor device with a rated voltage of 40.5kV and a three-phase AC frequency of 50Hz. It is designed in accordance with the State Grid Corporation of China's material procurement standard (2009 edition) "General Technical Specification for 12kV, 24kV, 40.5kV High Voltage Switchgear" and can be used for control and protection of electrical facilities in industrial and mining areas, enterprises, power plants, and substations.
This product complies with the relevant provisions of GB1984-2003 "High Voltage AC Circuit Breakers", JB3855 "Indoor High Voltage AC Vacuum Circuit Breakers", DL403 "Technical Conditions for Ordering 10-35kV Indoor High Voltage Vacuum Circuit Breakers" and IEC62271-100:2001 "High Voltage AC Circuit Breakers". The technical performance and parameters of this product meet the requirements of the centralized procurement technical specifications of State Grid Corporation of China.
The EVH1A-40.5/T2500-31.5 series indoor high-voltage solid sealed pole vacuum circuit breaker can be installed in a truck mounted switchgear. This circuit breaker has the advantages of long service life, simple maintenance, no pollution, no explosion hazard, low noise, and is suitable for harsh working conditions such as frequent operation.

Product Structure Features
The EVH1A-40.5/T2500-31.5 solid sealed pole vacuum circuit breaker arranges the arc extinguishing chamber and the operating mechanism on a shared frame, that is, an integrated layout. This structural design can make the operating performance of the operating mechanism more in line with the required performance of the arc extinguishing chamber opening and closing, reduce unnecessary intermediate transmission links, lower energy consumption and noise, and make the operating performance of the circuit breaker more reliable. The EVH1A-40.5/T2500-31.5 indoor high-voltage vacuum circuit breaker can be installed in a truck mounted switchgear.
The main circuit of the circuit breaker adopts a structure in which a vacuum arc extinguishing chamber is sealed inside the insulated pole. The vacuum arc extinguishing chamber is longitudinally sealed inside a tubular insulation cylinder, which is cast from epoxy resin using APG technology. This structural design not only prevents the vacuum arc extinguishing chamber from being damaged by external factors, but also ensures that it can exhibit high resistance to voltage effects even in humid, hot, and severely polluted environments.
The operating mechanism is an independent spring energy storage type, with manual and electric energy storage functions. The operating mechanism is placed inside the chassis in front of the arc extinguishing chamber and has a clamp plate structure.

Technical parameters of EVH1A-40.5/T2500-31.5 fixed sealed pole vacuum circuit breaker

serial number	Project			unit	Rated parameters
one	rated voltage			kV	forty point five
two	Rated insulation level	1-minute power frequency withstand voltage (effective value) for ground, phase to phase, and ordinary fracture surfaces		kV	ninety-five
		Lightning impulse withstand voltage (peak value) for ground, phase to phase, and ordinary fracture surfaces			one hundred and eighty-five
three	rated frequency			Hz	fifty
four	rated current			A	630, 1250, 1600, 2000, 2500
five	Rated short-time withstand current			kA	thirty-one point five
six	Rated peak withstand current			kA	eighty
seven	Rated short-circuit current duration			s	four
eight	Rated short-circuit closing current (peak)			kA	eighty
nine	Rated short-circuit breaking current		Effective value of communication component	kA	thirty-one point five
			Effective value of DC component		48%
ten	Rated operating sequence				Split -0.3s - Split -180s - Split - Split
eleven	Rated out of step breaking current			kA	eight
twelve	Rated out of phase breaking current				twenty-seven point three

[Indoor vacuum circuit breaker]EVH3R-2X31.5/T2000 series railway specific single-phase bipolar vacuum circuit breaker

2026-6-10 19:56:00

The EVH3R-2X31.5/T2000-31.5 series railway specific single-phase bipolar vacuum circuit breaker is a single-phase AC 50Hz, rated voltage of 31.5kV, suitable for indoor single-phase bipolar circuit breakers with miniaturized C-GIS. Specially used for railway substations and partition pavilions, for power supply, protection, and control of railway traction systems.
The circuit breaker adopts an integral layout, and the operating mechanism is an independent module with independent models. By adopting this form, the structure becomes simple and compact, and the mechanism can be individually packaged and then combined with the circuit breaker, greatly improving production efficiency and also greatly enhancing the mechanical operation reliability of the circuit breaker. The arc extinguishing chamber and operating mechanism of the circuit breaker are arranged in a front to back manner, with a reasonable structure and small volume.
The energy storage part, transmission part, buffering part, tripping part, and mechanical interlocking of the operating mechanism are all integrated into one, with only one output interface connected to the main circuit. The mechanism is composed of various forces in the mechanism, and the design will fully consider the effect of each force in the mechanism, making the arrangement of the transmission mechanism reasonable to ensure the minimum deformation of components. This not only ensures performance but also improves the reliability of the mechanism.

Characteristics of EVH3R-2X31.5/T2000 series railway specific single-phase bipolar vacuum circuit breaker

The main circuit structure is uniquely designed with uniform electric field distribution, high insulation performance, optimized mechanical structure design, and high strength.
The installation plate with thin plate welding and sealing ring structure is easy to manufacture, has high strength, and low cost.
The closing spring adopts a compression spring and a double sheet thin steel plate guide structure, which is compact in structure and stable in performance.
The outer surface of the vacuum impregnated insulation rod has a smooth arc transition, a reasonable structure, high mechanical strength, and good insulation performance.
The compression and transmission structure design of the contact spring is innovative, cleverly converting rotational motion into linear motion, and the pressure of the contact spring is very easy to adjust.
The connection structure between the insulation rod and the corrugated pipe guide rod is reliable and easy to assemble.
The circuit breaker panel is aesthetically pleasing and elegant.

Technical parameters of EVH3R-2X31.5/T2000 series railway specific single-phase bipolar vacuum circuit breaker

serial number	parameter name					unit	Numerical value
one	rated voltage					kV	2X31.5
two	Rated insulation level		1-minute power frequency withstand voltage (effective value)		to the ground	kV	ninety-five
					fracture		ninety-five
					Jijian		one hundred and forty
			Lightning impulse withstand voltage (peak value)		to the ground		two hundred
					fracture		two hundred and fifteen
					Jijian		three hundred and twenty-five
three	use altitude					rice	two thousand
four	rated frequency					Hz	fifty
five	rated current					A	two thousand
six	Rated short-time withstand current					kA	thirty-one point five
seven	Rated peak withstand current					kA	eighty
eight	Rated short-circuit current duration					s	four
nine	Rated short-circuit breaking current			Effective value of communication component		kA	thirty-one point five
nine	Rated short-circuit breaking current			Percentage of DC component			48%
ten	Rated operating sequence						O-0.3s-CO-180s-CO
eleven	Rated short-circuit closing current					kA	eighty
twelve	Rated main circuit resistance (between dynamic and static output lines)					�̦�	��15
thirteen	mechanical life					time	ten thousand
fourteen	Auxiliary and control circuits	Rated power supply voltage				V	DC��AC220 DC��AC110
fourteen	Auxiliary and control circuits	Rated power frequency				Hz	fifty

[Indoor vacuum circuit breaker]ZN65-12/4000-63 type generator outlet high-voltage vacuum circuit breaker

2026-6-10 19:55:51

ZN65-12/4000-63 Generator Outlet High Voltage Vacuum Circuit Breaker

Adopting an overall layout and modular design of units based on their functions
Using a unique variable transmission mechanism to drive the moving contact of the vacuum arc extinguishing chamber
The energy storage mechanism of the circuit breaker is simple and its functions are highly integrated
Good adaptability, can be easily used for various cabinet types such as JYN3, KYN3, KYN18C, XGN2, GG1A, etc
Complete specifications, serialized for convenient user selection

Technical parameters of ZN65-12/4000-63 generator outlet high-voltage vacuum circuit breaker

serial number	Rated parameters		Parameter values
one	Rated voltage kV		twelve
two	Rated insulation level (phase to phase, ground to ground, fracture)	1-minute power frequency withstand voltage (Effective value) kV	Alternating and facing the ground	forty-two
			fracture	fifty
		Lightning impulse withstand voltage (Peak) kV	Alternating and facing the ground	seventy-five
			fracture	eighty-five
three	Auxiliary circuit 1-minute power frequency withstand voltage kV		two thousand
four	Rated frequency Hz		fifty
five	Rated current A		four thousand
six	Rated short-time withstand current kA		sixty-three
seven	Rated peak withstand current kA		one hundred and seventy-six
eight	Rated short-circuit duration s		four
nine	Rated short-circuit breaking current kA		sixty-three
ten	DC component of rated short-circuit breaking current		��75%
eleven	Rated short-circuit closing current (peak) kA		one hundred and seventy-six
twelve	Rated operating sequence		Split -15 minutes - Split
thirteen	Rated out of step breaking current kA		thirty-one point five
fourteen	Rated load opening and closing times several times		one hundred
fifteen	Expected transient recovery voltage specified value for system source		Peak voltage kV		twenty-two
			Reference time �� s		four point nine
			Rising rate kV/�� s		four point five
seventeen	Closing time in milliseconds		55±10
eighteen	Opening time ms		45±10
nineteen	Closing bounce time ms		��2
twenty	Three phase closing and opening asynchronous ms		��2
twenty-two	Split time ms		one hundred
twenty-three	Rated breaking time in milliseconds		��70
twenty-four	Mechanical lifespan times		ten thousand
twenty-five	Allowable cumulative thickness of wear for dynamic and static contacts mm		three

[Indoor vacuum circuit breaker]EVH6-31.5(G)/2500 Plateau type railway dedicated single pole vacuum circuit breaker

2026-6-10 19:55:42

EVH6-31.5 (G)/2500 plateau railway dedicated single pole vacuum circuit breaker

It is an indoor single pole circuit breaker with a single-phase AC frequency of 50Hz and a rated voltage of 31.5kV. Indoor devices suitable for use in areas with an altitude of 4000 meters or below, specifically designed for railway substations and partition pavilions, used for power supply, protection, and control of railway traction systems.
The circuit breaker adopts an integral layout, and the operating mechanism is an independent module with independent models. By adopting this form, the structure becomes simple and compact, and the mechanism can be individually packaged and then combined with the circuit breaker, greatly improving production efficiency and also greatly enhancing the mechanical operation reliability of the circuit breaker. The arc extinguishing chamber and operating mechanism of the circuit breaker are arranged in a front to back manner, with a reasonable structure and small volume.
The energy storage part, transmission part, buffering part, tripping part, and mechanical interlocking of the operating mechanism are all integrated into one, with only one output interface connected to the main circuit. The mechanism is composed of various forces in the mechanism, and the design will fully consider the effect of each force in the mechanism, making the arrangement of the transmission mechanism reasonable to ensure the minimum deformation of components. This not only ensures performance but also improves the reliability of the mechanism.

Technical parameters of EVH6-31.5 (G)/2500 plateau railway dedicated single pole vacuum circuit breaker

serial number	parameter name						unit	Numerical value
one	rated voltage						kV	thirty-one point five
two	Rated insulation level	1-minute power frequency withstand voltage (effective value)		to the ground				Before correction*	After correction**
								ninety-five	one hundred and thirty-six
				fracture		Insulation inside the arc extinguishing chamber		ninety-five	ninety-five
						Outdoor insulation for arc extinguishing		ninety-five	one hundred and thirty-six
		Lightning impulse withstand voltage (peak value)		to the ground				one hundred and eighty-five	two hundred and seventy
				fracture		Insulation inside the arc extinguishing chamber		one hundred and eighty-five	one hundred and eighty-five
						Outdoor insulation for arc extinguishing		one hundred and eighty-five	two hundred and seventy
three	rated frequency						Hz	fifty
four	rated current						A	1250, 1600, 2000, 2500
five	Rated short-time withstand current						kA	thirty-one point five
six	Rated peak withstand current							eighty
seven	Rated short-circuit duration						s	four
eight	Rated short-circuit breaking current				Communication component		kA	thirty-one point five
					DC component			42%
nine	Rated short-circuit closing current (peak)						kA	eighty
ten	Rated operating sequence							O-0.3s-CO-180s-CO
eleven	Rated capacitive breaking current		Rated breaking current of a single capacitor bank				A	four hundred
twelve			Rated cable charging breaking current				A	fifty
thirteen	Split time (empty load)							one hundred and ten
fourteen	Rated breaking time							��75
fifteen	mechanical life						time	twenty thousand
sixteen	Allowable cumulative thickness of wear for dynamic and static contacts						mm	three
seventeen	Electrical lifespan						time	twenty

The value of EVH6-31.5 (G)/2500 plateau railway dedicated single pole vacuum circuit breaker during the 4000m altitude test * the corrected value of the product during the 1000m altitude test

[Indoor vacuum circuit breaker]EVH1-40.5 New type of solid sealed pole vacuum circuit breaker

2026-6-10 19:55:34

The EVH1-40.5/T2500-31.5 vacuum circuit breaker is an indoor device with a rated voltage of 40.5kV and a three-phase AC frequency of 50Hz. It can be used for controlling and protecting electrical facilities in industrial and mining areas, enterprises, power plants, and substations. This product complies with the relevant provisions of GB1984-2003 "High Voltage AC Circuit Breakers", JB3855 "Indoor High Voltage AC Vacuum Circuit Breakers", DL403 "Technical Conditions for Ordering 10-35kV Indoor High Voltage Vacuum Circuit Breakers" and IEC62271-100:2001 "High Voltage AC Circuit Breakers".
The EVH1-40.5/T2500-31.5 series indoor high-voltage vacuum circuit breaker can be installed in a truck mounted switchgear. This circuit breaker has the advantages of long service life, simple maintenance, no pollution, no explosion hazard, low noise, and is suitable for harsh working conditions such as frequent operation.

Product Structure Features
The EVH1-40.5/T2500-31.5 vacuum circuit breaker arranges the arc extinguishing chamber and the operating mechanism in a shared frame, that is, an integrated layout. This structural design can make the operating performance of the operating mechanism more in line with the required performance of the arc extinguishing chamber opening and closing, reduce unnecessary intermediate transmission links, lower energy consumption and noise, and make the operating performance of the circuit breaker more reliable.
The main circuit of the circuit breaker adopts a structure in which a vacuum arc extinguishing chamber is sealed inside the insulated pole. The vacuum arc extinguishing chamber is longitudinally sealed inside a tubular insulation cylinder, which is cast from epoxy resin using APG technology. This structural design not only prevents the vacuum arc extinguishing chamber from being damaged by external factors, but also ensures that it can exhibit high resistance to voltage effects even in humid, hot, and severely polluted environments.
The operating mechanism is an independent spring energy storage type, with manual and electric energy storage functions. The operating mechanism is placed inside the chassis in front of the arc extinguishing chamber and has a clamp plate structure.

Technical parameters of EVH1-40.5 new fixed sealed pole vacuum circuit breaker

serial number	Project			unit	Rated parameters
one	rated voltage			kV	forty point five
two	Rated insulation level	1-minute power frequency withstand voltage (effective value) for ground, phase to phase, and ordinary fracture surfaces		kV	ninety-five
		Lightning impulse withstand voltage (peak value) for ground, phase to phase, and ordinary fracture surfaces			one hundred and eighty-five
three	rated frequency			Hz	fifty
four	rated current			A	630, 1250, 1600, 2000, 2500
five	Rated short-time withstand current			kA	thirty-one point five
six	Rated peak withstand current			kA	eighty
seven	Rated short-circuit current duration			s	four
eight	Rated short-circuit closing current (peak)			kA	eighty
nine	Rated short-circuit breaking current		Effective value of communication component	kA	thirty-one point five
			Effective value of DC component		48%
ten	Rated operating sequence				Split -0.3s - Split -180s - Split - Split
eleven	Rated out of step breaking current			kA	eight
twelve	Rated out of phase breaking current				twenty-seven point three

[Indoor vacuum circuit breaker]EVH6-31.5 series railway specific single pole vacuum circuit breaker

2026-6-10 19:55:25

The EVH6-31.5 series railway specific single pole vacuum circuit breaker is an indoor single pole circuit breaker with a single-phase AC frequency of 50Hz and a rated voltage of 31.5kV. Specially used for railway substations and partition pavilions, for power supply, protection, and control of railway traction systems.
The circuit breaker adopts an integral layout, and the operating mechanism is an independent module with independent models. By adopting this form, the structure becomes simple and compact, and the mechanism can be individually packaged and then combined with the circuit breaker, greatly improving production efficiency and also greatly enhancing the mechanical operation reliability of the circuit breaker. The arc extinguishing chamber and operating mechanism of the circuit breaker are arranged in a front to back manner, with a reasonable structure and small volume.
The energy storage part, transmission part, buffering part, tripping part, and mechanical interlocking of the operating mechanism are all integrated into one, with only one output interface connected to the main circuit. The mechanism is composed of various forces in the mechanism, and the design will fully consider the effect of each force in the mechanism, making the arrangement of the transmission mechanism reasonable to ensure the minimum deformation of components. This not only ensures performance but also improves the reliability of the mechanism.

Technical parameters of EVH6-31.5 series railway specific single pole vacuum circuit breaker

serial number	Characteristic parameters			performance metrics
one	Rated voltage (kV)			thirty-one point five
two	Rated current (A)			two thousand and five hundred
three	Rated short-circuit breaking current (kA)			thirty-one point five
four	Rated short-circuit current breaking times (times)			thirty
five	Rated insulation level (before and after disconnection)	Rated lightning impulse withstand voltage (kV)	Alternating and relative to each other	two hundred and ten
			Between fracture surfaces	two hundred and ten
		Rated power frequency withstand voltage (kV 1min)	Alternating and relative to each other	one hundred and ten
			Between fracture surfaces	one hundred and ten
			Auxiliary circuit and control circuit	two
six	Rated dynamic stability current (kA peak)			eighty
seven	Rated thermal stability current (kA 4s)			thirty-one point five
eight	Rated short-circuit closing current (kA peak)			eighty
nine	Mechanical lifespan (times)			twenty thousand

[Indoor vacuum circuit breaker]EVH1-24/1250-31.5kV Indoor vacuum circuit breaker

2026-6-10 19:55:16

The EVH1-24/T1250-31.5 vacuum circuit breaker is an indoor device with a rated voltage of 12kV and a three-phase AC frequency of 50Hz. It can be used for controlling and protecting electrical facilities in industrial and mining areas, enterprises, power plants, and substations. This product complies with the relevant provisions of GB1984-2003 "High Voltage AC Circuit Breakers", JB3855 "Indoor High Voltage AC Vacuum Circuit Breakers", DL403 "Technical Conditions for Ordering 10-35kV Indoor High Voltage Vacuum Circuit Breakers" and IEC62271-100:2001 "High Voltage AC Circuit Breakers".
The EVH1-24/T1250-31.5 series indoor high-voltage vacuum circuit breaker can be installed in both mobile and fixed switchgear. This circuit breaker has the advantages of long service life, simple maintenance, no pollution, no explosion hazard, low noise, and is suitable for harsh working conditions such as frequent operation.

Product Structure Features
The EVH1-24/T1250-31.5 vacuum circuit breaker arranges the arc extinguishing chamber and the operating mechanism on a shared frame, that is, an integrated layout. This structural design can make the operating performance of the operating mechanism more in line with the required performance of the arc extinguishing chamber opening and closing, reduce unnecessary intermediate transmission links, lower energy consumption and noise, and make the operating performance of the circuit breaker more reliable. The EVH1-24/T1250-31.5 indoor high-voltage vacuum circuit breaker can be installed in both mobile and fixed switchgear.
The main circuit of the circuit breaker adopts a structure in which a vacuum arc extinguishing chamber is sealed inside the insulated pole. The vacuum arc extinguishing chamber is longitudinally sealed inside a tubular insulation cylinder, which is cast using epoxy resin technology. This structural design not only prevents the vacuum arc extinguishing chamber from being damaged by external factors, but also ensures that it can exhibit high resistance to voltage effects even in humid, hot, and severely polluted environments.
The operating mechanism is an independent spring energy storage type, with manual and electric energy storage functions. The operating mechanism is placed inside the chassis in front of the arc extinguishing chamber and has a clamp plate structure.

Technical parameters of EVH1-24/1250-31.5kV indoor vacuum circuit breaker

serial number	Name		unit	Numerical value
one	rated voltage		kV	twenty-four
two	Rated insulation level	1-minute power frequency withstand voltage	kV	65
		Impulse withstand voltage (peak value)		125
three	rated current		A	one thousand two hundred and fifty
four	Rated short-circuit breaking current		kA	thirty-one point five
five	Rated short-circuit closing current (peak)			80
six	Rated peak withstand current			eighty
seven	Rated short-time withstand current			thirty-one point five
eight	Electrical lifespan		time	thirty
nine	Rated short-circuit current duration		s	four
ten	Rated operating sequence			Min-0.3s HeFen-180s HeFen
eleven	mechanical life		time	10000
twelve	Rated breaking current of a single capacitor bank		A	six hundred and thirty
thirteen	Rated back-to-back capacitor bank breaking current		A	four hundred

[Indoor vacuum circuit breaker]EVH4-15/T6300-80F Indoor High Voltage AC Generator Circuit Breaker

2026-6-10 19:55:08

The EVH4-15/T6300-80F indoor high-voltage AC generator circuit breaker is a three-phase AC 50Hz indoor device with a rated voltage of 15kV and a rated current of 6300A. It is suitable for installation between the generator and the step-up transformer or between the generator and the power plant auxiliary transformer, and can be used for the protection and control of power plant generator facilities. The EVH4-15 indoor high-voltage AC generator circuit breaker is a new generation high-capacity and high-performance product developed by Tianshui Changcheng Switchgear Co., Ltd. based on decades of experience in designing and manufacturing vacuum circuit breakers.

Product Structure Features
EVH4-15 type vacuum circuit breaker suitable for high voltage electrical disconnection system
1. The fixed installation of the vacuum circuit breaker at the outlet of the EVH4-15/T6300-80 (F) generator has a rated current of up to 6300A and a rated short-circuit breaking current of up to 80kA under natural air cooling.
2. The vacuum circuit breaker at the outlet of the EVH4-15/T5000-63 (F) generator has a removable handcart structure and can withstand a rated current of 5500A and a rated short-circuit breaking current of 63kA under natural air cooling.
3. The main circuit adopts a large creepage distance, longitudinal magnetic field contact structure, and a dedicated generator outlet vacuum arc extinguishing chamber. A voltage equalization ring with a uniform electric field is designed between the main circuit and the ground.
4. The main circuit of the vacuum circuit breaker at the outlet of the EVH4-15 generator adopts a pure copper welded structure for the upper and lower outgoing lines, reducing the contact resistance caused by the assembled structure. Use analysis software to analyze the current density of the main circuit and make it uniform; The surface area of the heat sink.
5. Adopting the innovative design of the GLS type spring operated mechanism specifically designed for EVH series vacuum circuit breakers, the mechanical performance is stable and reliable.
6. The transmission structure adopts an optimized slider straightening mechanism to ensure excellent mechanical characteristics and stable mechanical parameters.

Technical parameters of EVH4-15/T6300-80F indoor high-voltage AC generator circuit breaker

serial number	parameter name					unit	Numerical value
one	rated voltage					kV	fifteen
two	Rated insulation level (Phase to phase, ground to ground, fracture surface)			1-minute power frequency withstand voltage (effective value)	Alternating and facing the ground		fifty
					fracture		fifty-nine
				Lightning impulse withstand voltage (peak value)	Alternating and facing the ground		ninety
					fracture		one hundred and two
three	1-minute power frequency withstand voltage of auxiliary circuit					V	two thousand
four	rated frequency					Hz	fifty
five	rated current					A	6300*
six	temperature rise	Static end of vacuum arc extinguishing chamber				��	seventy-five
		Vacuum arc extinguishing chamber moving end					seventy-five
		Conductive clamp block for moving contact					seventy-five
		Soft connection terminal					seventy-five
		Outgoing terminal on the circuit breaker					sixty-five
		Bottom terminal of circuit breaker					sixty-five
seven	Rated short-time withstand current					kA	eighty
eight	Rated peak withstand current						two hundred and twenty
nine	Rated short-circuit duration					s	four
ten	Rated short-circuit breaking current					kA	eighty
eleven	DC component of rated short-circuit breaking current						77%
twelve	Rated short-circuit closing current (peak)					kA	two hundred and twenty
thirteen	Rated operating sequence						CO-30min-CO
fourteen	Rated out of step symmetrical breaking current					kA	40 (DC component �� 20%)
fifteen	Rated asynchronous asymmetric breaking current						40 (DC component �� 77%)
sixteen	Rated Out of Step Closing Current (Peak)						fifty-six point five
seventeen	Rated load (6300A) opening and closing times					time	fifty
eighteen	System source TRV		Expected transient recovery voltage rise rate			kV/��s	four
			peak voltage			kV	twenty-seven point six
			Initial polar coefficient				one point five
nineteen	Generator source TRV		Expected transient recovery voltage rise rate			kV/��s	one point eight
			peak voltage			kV	twenty-seven point six
			Initial polar coefficient				one point five
twenty	Combination and division time					ms	one hundred
twenty-one	Rated breaking time					ms	��60
twenty-two	mechanical life					time	five thousand
twenty-three	Allowable cumulative thickness of wear for dynamic and static contacts					mm	three
twenty-four	Electrical lifespan					time	five

[Indoor vacuum circuit breaker]Indoor vacuum circuit breaker

2026-6-10 19:54:59

ZN63G-24 indoor vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN73Y series indoor permanent magnet vacuum circuit breaker

2026-6-10 19:54:50

ZN73Y series indoor permanent magnet vacuum circuit breaker

[Indoor vacuum circuit breaker]CV2-40.5 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:54:41

CV2-40.5 Indoor High Voltage Vacuum Circuit Breaker

project			unit	data
model				CV2-40.5
Rated voltage Ur Rated voltage			kV	forty point five
Rated insulation level	1-minute power frequency withstand voltage Ud (effective value)	ground-to-ground, interphase	kV	ninety-five
		Between fracture surfaces	kV	one hundred and eighteen
	Lightning impulse withstand voltage Up (peak)	ground-to-ground, interphase	kV	one hundred and eighty-five
		Between fracture surfaces	kV	two hundred and fifteen
rated frequency			Hz	fifty
rated current			A	630, 1250
Rated short-circuit breaking current Isc (effective value)			kA	25, 31.5
Rated peak withstand current Ip			kA	63, 80
Rated short-circuit closing current			kA	63, 80
Rated short-time withstand current Ik (effective value)			kA	25, 31.5
Rated short-circuit duration			s	four
Rated short-circuit current breaking times (times) (DL/T 402-2007)			time	thirty
Rated back-to-back capacitor bank breaking current Ibb (effective value)			A	four hundred
Rated breaking current Isb (effective value) of a single capacitor bank			A	six hundred and thirty
Rated cable charging breaking current I_c(Effective value)			A	fifty
Rated operating sequence				Automatic reclosing: O-0.3s-CO-180s-CO
				Non automatic reclosing: O-180s-CO-180s-CO
mechanical life			time	ten thousand
Classification: Mechanical life/Electrical life/Capacitive current breaking				M2/E2/C2

CV2-40.5 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]CV2-24 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:54:33

CV2-24 Indoor High Voltage Vacuum Circuit Breaker

project			unit	data
model				CV2-24
Rated voltage Ur			kV	twenty-four
Rated insulation level	1-minute power frequency withstand voltage Ud (effective value)	ground-to-ground, interphase	kV	sixty-five
		Between fracture surfaces	kV	seventy-nine
	Lightning impulse withstand voltage Up (peak)	ground-to-ground, interphase	kV	one hundred and twenty-five
	Lightning impulse withstand voltage Up (peak)	Between fracture surfaces	kV	one hundred and forty-five
Rated frequency fr			Hz	fifty
Rated current Ir			A	630, 1250, 1600
Rated short-circuit breaking current Isc (effective value)			kA	25, 31.5
Rated peak withstand current Ip			kA	63, 80
Rated short-circuit closing current			kA	63, 80
Rated short-time withstand current Ik (effective value)			kA	25, 31.5
Rated operating sequence				Automatic reclosing: O-0.3s-CO-180-CO
Rated operating sequence				Non automatic reclosing: O-180s-CO-180-CO
Rated power supply voltage Uop for closing and opening devices			V	AC��110�� 220�� DC��110�� 220
Rated power supply voltage Ua of auxiliary circuit			V	AC��110�� 220�� DC��110�� 220
Rated short-circuit breaking current breaking times			time	twenty
mechanical life			time	ten thousand
Classification: Mechanical life/Electrical life/Capacitive current breaking				M2/E2/C2

CV2-24 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]CVR1-12 type indoor mounted high-voltage vacuum circuit breaker

2026-6-10 19:54:24

The CVR1-12 indoor mounted high-voltage vacuum circuit breaker is a new layout structure product developed to meet the requirements of the power supply department. Its width is only 380mm, and it is installed in 800mm wide fixed cabinets and ring main units together with isolation switches. It can be used for on-site control and protection of large equipment in industrial and mining enterprises, as well as in substation switching stations and other places.
Rated current of circuit breaker: 630A, 1250A

project		unit	data
model			CV1	CVR1
Rated voltage Ur		kV	twelve
Rated insulation level	1-minute power frequency withstand voltage Ud (effective value) Fracture, phase to phase, ground to ground	kV	forty-two
	Lightning impulse withstand voltage Up (peak) Fracture, phase to phase, ground to ground	kV	seventy-five
Rated frequency fr		Hz	fifty
Rated current Ir		A	630, 1250, 1600, 2000, 2500, 3150, 4000	630, 1250
Rated short-circuit breaking current Isc (effective value)		kA	25, 31.5, 40, 50	25, 31.5
Rated peak withstand current Ip		kA	63, 80, 100, 125	63, 80
Rated short-circuit closing current		kA	63, 80, 100, 125	63, 80
Rated short-time withstand current Ik (effective value)		kA	25, 31.5, 40, 50	25, 31.5
Rated short-circuit duration tk		s	four
Rated back-to-back capacitor bank breaking current Ibb (effective value)		A	four hundred
Rated back-to-back capacitor bank closing inrush current Ibi (peak)		kA	20 (frequency 4250Hz)
Rated cable charging breaking current Ic (effective value)		A	twenty-five
Rated operating sequence			Automatic reclosing: O-0.3s-CO-180-CO
			Non automatic reclosing: O-180s-CO-180-CO
Rated power supply voltage Uop for closing and opening devices		V	AC��110, 220�� DC��110, 220
Rated power supply voltage Ua of auxiliary circuit		V	AC��110, 220�� DC��110, 220
mechanical life		time	1250-31.5 and below: 20000	ten thousand
			1250-31.5 and above: 10000
Classification: Mechanical life/Electrical life/Capacitive current breaking			M2/E2/C2

CVR1-12 indoor mounted high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]AV-3S-40.5 Outdoor AC Permanent Magnet High Voltage Vacuum Circuit Breaker

2026-6-10 19:54:15

AV-3S-40.5 Outdoor AC Permanent Magnet High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]AVBG-40.5 Sealed High Voltage Vacuum Circuit Breaker

2026-6-10 19:54:06

AVBG-40.5 Sealed High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]VBG-40.5 Sealed Circuit Breaker

2026-6-10 19:53:57

VBG-40.5 Sealed Circuit Breaker

[Indoor vacuum circuit breaker]ZN23-40.5/2000-31.5 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:53:49

ZN23-40.5/2000-31.5 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZJUV1-12 series indoor vacuum circuit breaker

2026-6-10 19:53:40

The ZJUV1-12 series indoor vacuum circuit breaker is used as an indoor switchgear with a rated voltage of 12kV and three-phase AC 50Hz, serving as a control and protection unit for power grid equipment and industrial and mining enterprise power equipment. Due to the special advantages of vacuum circuit breakers, this product is suitable for frequent operations that require rated working current, or for places where multiple short-circuit currents are disconnected.
This circuit breaker has the advantages of long service life, simple maintenance, no pollution, no explosion hazard, low noise, and is suitable for harsh working conditions such as frequent operation. Circuit breakers can be installed in both mobile switchgear and fixed switchgear.

The ZJUV1-12 series indoor vacuum circuit breaker adopts an overall layout structure, and the spring operating mechanism used is quite mature, with a simple structure and reliable performance. The chassis adopts a reasonable grid structure, which makes the layout of each functional unit clear and easy to maintain.

The ZJUV1-12 series indoor vacuum circuit breaker complies with relevant standards such as GB1984-2003, DL/T403-2000, JB3855-1996, etc.

[Indoor vacuum circuit breaker]ZN12-27.5B Single stage railway switch

2026-6-10 19:53:31

ZN12-27.5B single-stage railway switch is an indoor high-voltage switchgear with a rated voltage of 27.5kV and single-phase AC of 50Hz. This circuit breaker is of the handcart type and is equipped with handcart tracks and current transformers.

The ZN12-27.5B single-stage railway switch is suitable for various operating places such as substations, switching stations, partition pavilions, etc. with BT power supply mode of electrified railway traction power supply system.

Main technical parameters of ZN12-27.5B single-stage railway switch

serial number	project		unit	data
one	rated voltage		kV	twenty-seven point five
two	Maximum operating voltage		kV	thirty-one point five
three	Rated insulation level	One minute power frequency withstand voltage	kV	Normal type: 95 (110 between fracture surfaces) Plateau type: 110 (125 between fractures)
three	Rated insulation level	Lightning impulse (peak value)	kV	185 260
four	rated current		A	1250,2000
five	Rated short-circuit breaking current		kA	25,31.5
six	Rated short-circuit breaking current breaking times		time	thirty
seven	Rated Dan furnace closing current (peak value)		kA	63,80
eight	Rated short-circuit duration		S	four
nine	Rated operating sequence			Min-0.3s HeFen-180s HeFen
ten	closing time		ms	��75
eleven	Opening time		ms	��60
twelve	Rated breaking current of capacitor bank		A	six hundred and thirty
thirteen	mechanical life		time	twenty thousand
fourteen	Allowable cumulative thickness of wear for dynamic and static contacts		mm	four
fifteen	Rated current ratio of current transformer			75��2000/1.5
sixteen	Overall dimensions		mm	Height 1675, depth 1220, width 690
seventeen	Total weight		kg	two hundred and sixty

ZN12-27.5B single-stage railway switch operating mechanism parameters

serial number	project	unit	data
one	Rated power of energy storage motor	W	two hundred and seventy-five
two	Rated voltage of energy storage motor	V	AC:110 220 DC:110 220
three	Energy storage time under rated working voltage	S	��15
four	The rated voltage of the closing electromagnet is supplied by an independent power source, and the rated voltage of the opening electromagnet is also supplied	V	AC:110 220 DC:110 220
five	Rated current of overcurrent release device	A	five
six	Rated current of auxiliary switch	A	AC:10 DC:5
seven	Continuous current allowed to pass through microswitches	A	two
eight	Opening and closing current (DC220V, DC110V)	A	0.89,1.91

[Indoor vacuum circuit breaker]VBK10-24 Indoor vacuum circuit breaker

2026-6-10 19:53:22

The VBK10-24 vacuum circuit breaker is an indoor high-voltage switchgear with a rated voltage of 24kV and three-phase AC 50Hz. It is a product independently developed, designed, and manufactured based on the technology of Siemens AG in Germany. The operating mechanism of this circuit breaker consists of a spring energy storage mechanism, a locking mechanism, a release spring, a switch spindle, a buffer, and a control device.

[Indoor vacuum circuit breaker]VBK9-12 Indoor vacuum circuit breaker

2026-6-10 19:53:14

The VBK9-12 (ZN65A-12/T4000-63) indoor vacuum circuit breaker is a large capacity indoor AC high-voltage switchgear with a rated voltage of 12kV and three-phase AC 50Hz. It adopts a spring energy storage operating mechanism and can be operated by AC, DC or manual. The structure is simple, the performance is reliable, and it can be used as an outlet protection switch for small generators.

[Indoor vacuum circuit breaker]VBK8-12-EP(ZN65A-EP) Solid sealed pole vacuum circuit breaker

2026-6-10 19:53:05

The VBK8-12-EP solid sealed pole vacuum circuit breaker is developed and produced based on the ZN65A. It eliminates the phase partition, further improving its anti pollution and anti mechanical collision capabilities. It has the characteristics of simple and reliable structure, long service life, and maintenance free, and can be used as a control and protection switch for power plants, urban power grids, and operating enterprises.

VBK8-12-EP (ZN65A-EP) solid sealed pole vacuum circuit breaker

[Indoor vacuum circuit breaker]VBK7-12 Indoor vacuum circuit breaker

2026-6-10 19:52:56

VBK7-12 (ZN65A-12/T3150-40) indoor vacuum circuit breaker is an innovative product that absorbs foreign technology. It is suitable for indoor switchgear with a rated voltage of 12kV and three-phase AC 50Hz. The operating mechanism is a spring energy storage type. It has the characteristics of simple structure, strong breaking ability, long service life, complete operating functions, and easy maintenance, and can be used for small generator protection switches.

[Indoor vacuum circuit breaker]VBK6-40.5 Indoor vacuum circuit breaker

2026-6-10 19:52:47

VBK6-40.5 (ZN65A-12/T2000-31.5) indoor vacuum circuit breaker is an ultra long life indoor high-voltage electrical equipment with a rated voltage of 40.5kV and three-phase AC 50Hz. Its outstanding feature is that its mechanical life can reach 120000 times, suitable for distribution systems such as working enterprises and substations, as control and protection switches; Especially suitable for industries such as metallurgical arc steelmaking that require frequent operations, as a control and protection equipment.

[Indoor vacuum circuit breaker]VBK5-40.5 Indoor vacuum circuit breaker

2026-6-10 19:52:39

The VBK5-40.5 (ZN12-40.5) indoor vacuum circuit breaker is an indoor high-voltage switchgear with a rated voltage of 40.5kV and three-phase AC 50Hz. It is manufactured using Siemens 3AF technology. Strong breaking ability, long mechanical life, superior technical performance, and can also be used as control and protection switches for power plants, substations, and other transmission and distribution systems, especially suitable for places with frequent operations.

[Indoor vacuum circuit breaker]VBK4-12 Indoor vacuum circuit breaker

2026-6-10 19:52:29

The VBK4-12 (ZN65A-12/T1250-31.5) indoor vacuum circuit breaker is suitable for indoor high-voltage equipment with a rated voltage of 12kV and three-phase AC 50Hz. Its breaking capacity reaches 100 times, which is at the leading level in China. Suitable for use as control and protection switches in power plants, substations, and other transmission and distribution systems, especially in places where important loads are disconnected and frequent operations occur.

[Indoor vacuum circuit breaker]VBK3-12 Indoor vacuum circuit breaker

2026-6-10 19:52:20

VBK3-12 (ZN65A-12/T1250-25) indoor vacuum circuit breaker is a new economical circuit breaker. Its structure is a spring energy storage operating mechanism, suitable for power systems with a rated voltage of 12kV and three-phase AC 50Hz. Suitable for control and protection switches in power transmission and distribution systems and industrial and mining enterprises, especially in places with frequent operations.

[Indoor vacuum circuit breaker]VBK2-12(ZN12-12) AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:52:12

The VBK2-12 (ZN12-12) AC high-voltage vacuum circuit breaker is a product manufactured using 3AF technology from Siemens AG in Germany. It has a simple structure and stable performance. This includes all industrial and mining products, high-altitude products, low-temperature products, and three proof products. Suitable for use as control and protection switches in power plants and substations, especially in places where important loads are disconnected and frequent operations are carried out.

[Indoor vacuum circuit breaker]VBK1-12 Indoor vacuum circuit breaker

2026-6-10 19:52:03

The VBK1-12 (ZN63A-12G) indoor vacuum circuit breaker is an indoor high-voltage switchgear with a rated voltage of 12kV and three-phase AC 50Hz. It adopts a composite insulation method, and the vacuum arc extinguishing chamber is installed in a three-phase independent insulation cylinder. Therefore, the arc extinguishing chamber can reduce the influence of external environment and mechanical damage. Has strong anti pollution ability.

[Indoor vacuum circuit breaker]MZG32-40.5 Outdoor AC High Voltage Isolation Switch

2026-6-10 19:51:54

MZG32-40.5, 72.5, 126 (W) III/630, 1250, 1600, 2000 double column horizontal break V-shaped horizontal rotary outdoor three-phase AC high voltage isolation switch is used for switching high voltage lines under no-load conditions, as well as for electrically isolating high voltage electrical equipment such as high voltage busbars and circuit breakers under maintenance from live high voltage lines.

Structural features:
1. Environmental temperature: -40 �� to+40 ��;
2. Altitude: not exceeding 2000m;
3. The environmental pollution levels are II, III, and IV;
4. The thickness of ice cover shall not exceed 10mm;
5. The wind pressure does not exceed 700Pa;
6. Earthquake intensity: areas below 8 degrees;
7. The installation site should be free from flammable, explosive hazards, chemical corrosion, and severe vibrations.

MZG32-40.5 outdoor AC high voltage isolation switch model meaning

Main technical parameters of MZG32-40.5 outdoor AC high voltage isolation switch

Appearance and installation dimensions

MZG32-40.5 Outdoor AC High Voltage Isolation Switch

[Indoor vacuum circuit breaker]MZG13-12 Outdoor AC High Voltage Isolation Switch

2026-6-10 19:51:45

MZG13-12 outdoor single pole isolation switch (hereinafter referred to as the switch) is suitable for 10kV high-voltage transmission and distribution lines, used to cut off and close single-phase or three-phase circuits with no load and voltage. The switch is designed for single-phase use in three-phase systems, and its structure is simple, economical, and easy to use. The rated current of the switch is 200; 400�� 600 and 1000A. They are both composed of a base, post insulators, conductive parts, and mechanism parts. Adopting a knife type structure to open and close the circuit. Each phase switch blade is composed of two conductive blades, and compression springs are installed on both sides of the blades. Adjusting the height of the springs can obtain the contact pressure required for the switch blade. The insulation operating mechanism can be used to perform closing movement when opening and closing the switch. The knife switch has a self-locking device.

Structural features:
1. Altitude not exceeding 1000m;
2. Environmental humidity: The maximum environmental humidity shall not exceed+40 ��, and the minimum environmental humidity shall not be lower than -30 ��;
3. Outdoor wind speed not exceeding 35m/s;
4. The seismic intensity shall not exceed 8 degrees;
5. The installation site should be free of gases, vapors, chemical deposits, dust, dirt, and other explosive or corrosive media that seriously affect the insulation and conductivity of the switch;
6. The installation site should be free from frequent and severe vibrations.

MZG13-12 outdoor AC high voltage isolation switch model meaning

Main technical parameters of MZG13-12 outdoor AC high voltage isolation switch

MZG13-12 Outdoor AC High Voltage Isolation Switch

[Indoor vacuum circuit breaker]MZZ8-40.5 series indoor high-voltage vacuum circuit breaker

2026-6-10 19:51:36

MZZ8-40.5 series indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor device with a rated voltage of 40.5kV, equipped with a dedicated 3AV3 spring mechanism. The circuit breaker can be configured in JYN1-10.5 (Z) movable metal enclosed switchgear or KYN61-40.5 assembled metal enclosed switchgear, and is currently the most ideal circuit breaker in 40.5KV devices. This series of products has high technical parameters, strong breaking ability, and reliable action. Stable performance, long lifespan, easy maintenance, and no explosion hazard or pollution. It is used for the protection and control of single busbar electrical facilities in industrial and mining enterprises, power plants, and substations, and is suitable for frequent operation places. It can also be used for special occasions such as capacitor banks. This product adopts an integrated and modular design, with a simple and reasonable overall structure. It is arranged vertically, with the arc extinguishing chamber on top and the interlocking and operating mechanism on the bottom. Using a dedicated 3AV3 spring operated mechanism, there is no need for adjustment, and the action is stable and reliable. The vacuum arc extinguishing chamber is arranged inside a closed insulation cylinder, which improves the insulation performance and reduces the overall size.

Structural features:
1. Environmental temperature: upper limit+40 ��, lower limit -15 ��. -25 �� in high-altitude regions;
2. The average daily relative humidity does not exceed 95%; The average daily water vapor pressure shall not exceed 2.2kPa, and the average monthly relative humidity shall not exceed 90%; The average monthly water vapor pressure shall not exceed 1.8kPa.
3. Altitude: 1000m;
5. The seismic intensity shall not exceed 8 degrees;
6. Not suitable for places with flammability, explosion, hazardous chemical corrosion, and severe vibration.

MZZ8-40.5 series indoor high-voltage vacuum circuit breaker model meaning

[Indoor vacuum circuit breaker]Indoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:51:27

MZ63A-12 (VS1) indoor AC high-voltage vacuum circuit breaker, suitable for three-phase AC 50Hz, rated voltage of 7.2KV~12KV power system. Widely used in various types of loads and frequent operations, it plays a protective and control role for electrical equipment in industrial and mining areas, enterprises, power plants, and substations. It can be used with KYN28A-12 (GZS1) and other mid mounted handcart switch cabinets, as well as XGN - �� fixed switch cabinets. This product complies with the national standards GB1984 "AC High Voltage Circuit Breaker", JB3855 "3.6-40.5KV Indoor AC High Voltage Vacuum Circuit Breaker", and IEC60056 "High Voltage AC Circuit Breaker". Meet the technical requirements for ordering 10-35KV indoor high-voltage vacuum circuit breakers (DL/T403).

Structural characteristics of MZ63A-12 (VS1) indoor AC high-voltage vacuum circuit breaker:
1. Altitude: not exceeding 1000m;
2. Environmental temperature: maximum temperature+40 ��, minimum temperature -15 �� (storage and transportation allowed at -30 ��)
3. Environmental temperature: Daily average relative humidity: �� 95% Monthly average relative humidity: �� 90% Daily average saturated vapor pressure: �� 2.2 × KPa Monthly average saturated vapor pressure: �� 1.8 × KPa

MZ63A-12 (VS1) Indoor AC High Voltage Vacuum Circuit Breaker Model Meaning

[Indoor vacuum circuit breaker]MZZ61-12 series vacuum circuit breaker

2026-6-10 19:51:18

The MZZ61-12 series vacuum circuit breaker is a high-voltage indoor switchgear with a rated voltage of 12kV and three-phase AC 50Hz. This product complies with GB1984-89 standard, and its overall structure consists of two forms: integrated installation of switch body and operating mechanism, and separate installation of switch body and operating mechanism. The integrated structure is the basic type of MZZ61-12. The split structure is MZZ61A-12 type, suitable for various fixed switchgear such as GG-1A (Z), XGZ2A10 (Z), etc. This product can be equipped with CD17 and CD10A DC electromagnetic operating mechanisms, as well as CT17 and CT19 spring energy storage operating mechanisms.

Structural characteristics of MZZ61-12 series vacuum circuit breaker:
Model meaning

Working and environmental conditions
1. Environmental temperature: upper limit+40 ��, lower limit -15 ��.
2. Altitude: 1000m;
3. The daily average relative humidity of the air is not more than 95%, and the monthly average is not more than 90%. The daily average saturated vapor pressure is not greater than 2.2 × 10-3MPa,
The monthly average value shall not exceed 1.8 × 10-3MPa.
4. The seismic intensity shall not exceed 8 degrees;
5. The place of use is free from condensation, flammability, explosiveness, severe pollution, chemical corrosion, and severe vibration.

Main parameters of MZZ61-12 series vacuum circuit breaker

Appearance and installation dimensions
Figure 1MZZ61-12 Outline Dimensional Drawing of Vacuum Circuit Breaker

Figure 2: Dimensions of MZZ61-12/T Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]Indoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:51:09

The MZZ7-24 indoor AC high-voltage vacuum circuit breaker is the latest generation of serialized 24kV vacuum circuit breakers developed by our company with reference to domestic and foreign technology research. The main design concept is to use solid sealed insulation performance as the main electrical circuit, improve the design operating mechanism, and ensure stable insulation performance, mechanical reliability, and significantly improved breaking performance of the circuit breaker, truly achieving maintenance free and longer mechanical and electrical life. And without explosion hazard and pollution, it is used for the protection and control of single busbar electrical facilities in industrial and mining enterprises, power plants, and substations, and is suitable for frequent operation places. It can also be used for special occasions such as capacitor banks.

Structural features:
This product complies with the national standards GB1984-2003 "AC High Voltage Circuit Breaker" and IE62271-100 "AC High Voltage Circuit Breaker". Meet the technical requirements for ordering 10-35kV indoor high-voltage vacuum circuit breakers (DL/T403).

MZZ7-24 indoor AC high-voltage vacuum circuit breaker model meaning

environmental conditions
Altitude: not exceeding 1000m;

Environmental temperature: maximum temperature+40 ��, minimum temperature -15 �� (storage and transportation allowed at -30 ��)

Environmental humidity: Daily average relative humidity: �� 95%
Monthly average relative humidity: �� 90%
Daily average saturated vapor pressure: �� 2.2 × KPa;
Monthly average saturated vapor pressure: �� 1.8 × KPa

Main technical parameters
1. Main technical parameters of MZZ7-24

name		unit	data
rated voltage		Kv	twenty-four
rated frequency		HZ	50/60
Rated insulation level	1-minute power frequency withstand voltage	KV	sixty
	Lightning impulse withstand voltage	Hz	one hundred and twenty-five
rated current		A	1250-3150
Rated short-circuit withstand current (4S)		KA	twenty	twenty-five	thirty-one point five
Rated peak withstand current		KA	fifty	sixty-three	eighty
Rated short-circuit breaking current		KA	twenty	twenty-five	thirty-one point five
Rated closing current		KA	fifty	sixty-three	eighty
Rated short-circuit breaking times		time	thirty
Rated short-circuit duration		second	four
Secondary circuit power frequency withstand voltage (1min)		V	two thousand
Rated capacitor group breaking current		A	400/630
Rated operating sequence			O-0.3s-CO-180s-CO
mechanical life		time	2000 (60000 cycles for magnetic permanent magnet mechanism)

2. MZZ7-24 mechanical characteristic parameters

name	unit	data
Contact opening distance	mm	14±1
overstroke	mm	3.5±1
Bouncing time of closing contact	ms	��2
Three phase asynchronous opening and closing	ms	��2
Average opening speed	ms	1.0±0.2
Average closing speed	m/s	1.3±0.2
Opening time	ms	35-70
closing time	ms	20-50
Main electrical circuit resistance	�̦�	630A 1250A one thousand and six hundred 2000A two thousand and five hundred 3150A	��50�̦� ��45�̦� ��35�̦� ��35�̦� ��30�̦� ��25�̦�
Rated power of energy storage motor	W	eighty
Energy storage time	s	<10

Appearance and installation dimensions

MZZ7-24 Indoor AC High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]Indoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:51:01

MZZ6-12 indoor AC high-voltage vacuum circuit breaker, suitable for three-phase AC 50Hz, rated voltage of 7.2kV~12kV power system. Widely used in various types of loads and frequent operations, it plays a protective and control role for electrical equipment in industrial and mining areas, enterprises, power plants, and substations. It can be used with KYN28A-12 (GZS1) and other mid mounted handcart switch cabinets, as well as XGN - �� fixed switch cabinets.

The MZZ6-12 indoor AC high-voltage vacuum circuit breaker complies with the national standards GB1984 "AC High Voltage Circuit Breaker", JB3855 "3.6-40.5KV Indoor AC High Voltage Vacuum Circuit Breaker", and IEC60056 "AC High Voltage Circuit Breaker". Meet the technical requirements for ordering 10-35KV indoor high-voltage vacuum circuit breakers (DL/T403).

Structural features:
Model meaning

environmental conditions
Altitude:
Not exceeding 1000m;

Ambient temperature
Maximum temperature+40 ��, minimum temperature -15 �� (storage and transportation allowed at -30 ��)

ambient humidity:
Daily average relative humidity: �� 95%
Monthly average relative humidity: �� 90%
Daily average saturated vapor pressure: �� 2.2 × KPa
Monthly average saturated vapor pressure: �� 1.8 × KPa

Main electrical parameters
1. Main technical parameters of MZZ6-12 vacuum circuit breaker

name		unit	data
rated voltage		Kv	twelve	twelve	twelve	twelve	twelve
rated frequency		HZ	fifty	fifty	fifty	fifty	fifty
rated current		A	630, 1250	630, 1250	630, 1250, 1600	1250, 1600, 2000	2000, 2500, 3150
Rated insulation level	1-minute power frequency withstand voltage	KV	forty-two	forty-two	forty-two	forty-two	forty-two
Rated insulation level	Rated lightning impulse withstand voltage	KV	seventy-five	seventy-five	seventy-five	seventy-five	seventy-five
Rated short-circuit breaking current		KA	sixteen	twenty	twenty-five	thirty-one point five	forty
Rated short-circuit closing current (peak)			forty	fifty	sixty-three	eighty	one hundred
Rated (peak) withstand current			forty	fifty	sixty-three	eighty	one hundred
Rated short-circuit withstand current			sixteen	twenty	twenty-five	thirty-one point five	forty
Rated short-circuit breaking current breaking times			fifty	fifty	fifty	fifty	thirty
Rated short-circuit duration		second	four	four	four	four	four
Secondary circuit power frequency withstand voltage (1min)		V	two thousand	two thousand	two thousand	two thousand	two thousand
Rated operating sequence			O-t-CO-t1-Co
mechanical life			thirty thousand	thirty thousand	thirty thousand	thirty thousand	ten thousand

*16KA��20KA��25KA��31.5KA��t1=180s; 40kA��t=180s��t1=180s

3. Mechanical characteristic parameters of MZZ6-12 vacuum circuit breaker

name		unit	data
Contact opening distance		mm	11±1	11±1	11±1	11±1	11±1
overstroke		mm	3±0.5	3±0.5	3±0.5	3±0.5	3±0.5
Three phase asynchronous opening and closing		ms	<=2	<=2	<=2	<=2	<=2
Bouncing time of closing contact		ms	<=2	<=2	<=2	<=2	<=2
Distance from center to center			210±1.5	210±1.5	210±1.5	210±1.5	210±1.5
Closing contact distance pressure		N	16KA	20KA	25KA	31.5KA	40KA
			200±200	2400±200	2400±200	3100±200	4250±250
Average opening speed		ms	1.1±0.2
Average closing speed		m/s	0.6±0.2
Opening time, when the operating voltage is	highest	ms	��50
	rated		��60
	minimum		��60
closing time		ms	��100
Allowable wear thickness for light accumulation of moving and stationary contacts		mm	three
Main electrical circuit resistance		�̦�	630A 1250A 1600-2000A 2500-3150A 4000A		��50�̦� ��45�̦� ��35�̦� ��25�̦� ��20�̦�
Rated power of energy storage motor		W	70(40KA 100W)
Energy storage time		s	<10

4. Technical data of opening and closing coils

	trip coil	closing coil	Remarks
Rated operating voltage (V)	DC220,DC110; AC220,AC110	DC220,DC110; AC220,AC110	The opening coil is less than 30% rated operating power When pressing, do not open the switch
Coil power (W)	two hundred and forty-five	two hundred and forty-five
Normal operating voltage range	65% to 120% rated voltage	85% to 110% rated voltage

Exterior installation dimensions

MZZ6-12 Indoor AC High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]VKP-24-2500-31.5 High Voltage Vacuum Circuit Breaker

2026-6-10 19:50:52

The rated parameters, design structure, technical requirements, inspection and testing, labeling, packaging, transportation, and storage of VKP-24/2500-31.5 indoor AC high-voltage vacuum circuit breaker.

Reference standards
GB/T11022-1999 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards
GB1984-2003 High Voltage AC Circuit Breakers
GB/T3309-1989 "Mechanical Testing of High Voltage Switchgear at Room Temperature"
DL/T402-1999 Technical Conditions for Ordering AC High Voltage Circuit Breakers
JB/T8738-1998 "Vacuum arc extinguishing chamber for 3.6-40.5KV AC high voltage switchgear"
JB3855-1996 "3.6-40.5KV Indoor AC High Voltage Vacuum Circuit Breaker"

Rated Parameters of VKP-24-2500-31.5 High Voltage Vacuum Circuit Breaker (Table 1)

Environmental conditions for use
1. Environmental temperature
Maximum temperature:+40 ��;
Minimum temperature: -15 ��;
The daily average temperature does not exceed+35 ��.
2. Environmental humidity
Relative humidity: daily average �� 95%, monthly average �� 90%;
Water vapor pressure: daily average �� 2.2KPa, monthly average �� 1.8KPa.
The altitude of the equipment installation site shall not exceed 1000 meters.
4. Places without flammability, explosiveness, chemical corrosion, and severe vibration;
The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6KV
Design, Structure, and Technical Requirements
Vacuum arc extinguishing chamber: The structural dimensions shall meet the technical requirements, and the technical parameters shall comply with JB/T8738-1998 "Vacuum arc extinguishing chamber for 3.6-40.5KV AC high voltage switchgear".
Operating mechanism: Spring energy storage operating mechanism, with manual and electric closing and opening operation functions.
The mechanism is equipped with anti jumping devices, trip devices, operation frequency recorders, and opening and closing indicator devices, and can be equipped with overcurrent trip devices and voltage loss trip devices.

Technical parameters of the institution

Energy storage operation: When the operating voltage is between 85% and 110% of the rated voltage, the circuit breaker should ensure normal energy storage.
Tripping operation: Its reliable operating voltage should be 65% -120% of the rated voltage value. When the rated voltage value is lower than 30%, the release should not engage.
The energy storage handle used for manual energy storage mechanisms should not exceed 150mm.
The frame of a fixed circuit breaker should be equipped with a grounding thread no larger than M12 and marked with a grounding symbol.
There should be reliable mechanical interlocking between the chassis of the handcart circuit breaker and the operating mechanism of the circuit breaker.
The assembly and adjustment of circuit breakers should meet the parameter requirements in the following table.

Test content, methods, and inspection rules
The test includes type test and factory test
type test

[Indoor vacuum circuit breaker]VKP-12 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:50:43

The ZN73A (VKP) -12 indoor AC high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is a three-phase AC 50Hz indoor high-voltage switchgear with a rated voltage of 7.2-12KV. The circuit breaker complies with Chinese standards GB/T1984 "High Voltage AC Circuit Breakers", JB3855 "3.6-40.5KV Indoor AC High Voltage Vacuum Circuit Breakers" and relevant IEC standards, and has reliable interlocking function.
Circuit breakers can operate frequently and have the ability to open and close multiple times and quickly reclose.
The circuit breaker is designed as a front and rear split structure, which can be used as a fixed installation unit or as a separate handcart with the chassis.

Main technical parameters of VKP-12 indoor high-voltage vacuum circuit breaker
Mechanical characteristic parameters of circuit breaker

Mechanical characteristic parameters of circuit breaker

Note: The average closing and opening speed refers to the average speed at which the contact is fully open

Figure 1 Dimensions of Handcart ZN73-12: Rated current>1600A, dimensions in parentheses indicate rated current �� 1600A

Figure 1 Fixed ZN73-12 external dimension diagram: rated current>1600A, dimensions in parentheses indicate rated current �� 1600A

VKP-12 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:50:34

VS1-40.5 indoor high-voltage vacuum circuit breaker is mainly used in three-phase AC 50Hz power systems with a rated voltage of 40.5kV. It can be used for protection and control in industrial and mining enterprises, power plants, and substations, especially suitable for various frequent operating places. This product complies with the requirements of GB11022 "Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards", GB1984 "AC High Voltage Circuit Breakers", IEC56 "High Voltage AC Circuit Breakers" and other standards.

Main technical parameters of VS1-40.5 indoor high-voltage vacuum circuit breaker (indoor high-voltage vacuum circuit breaker VS-40.5 type)

serial number	project	unit	Technical Specifications
one	Contact opening distance	mm	18~20
two	overstroke		3~5
three	Allowable wear thickness of contacts		three
four	Average opening speed (8mm after contact separation)	m/s	1.0~1.5
five	Average closing speed (12mm before contact closure)		0.5~0.9
six	Contact closing bounce time		��3
seven	Three phase asynchronous disconnection		��2
eight	Three phase closing asynchrony	ms	��2
nine	closing time		��90
ten	Opening time		��60
eleven	DC resistance of each phase conductive circuit (between the upper and lower plum blossom contacts)	�̦�	1250A	1600A��2000A
			��50	��40
twelve	Interphase center distance	mm	300±2

serial number	project		unit	Technical Specifications
one	rated voltage		kV	forty point five
two	Rated insulation level	1-minute power frequency withstand voltage		ninety-five
		Lightning impulse withstand voltage (peak value)		one hundred and eighty-five
three	rated current		A	630��1250��1600��2000
four	Rated short-circuit breaking current		kA	twenty	twenty-five	thirty-one point five
five	Rated short-circuit closing current (peak)			fifty	sixty-three	eighty
six	Rated operating sequence			0-0.3s-Co-180s-Co
seven	Rated out of step breaking current		kA	five	six point two five	eight
eight	Rated out of phase short circuit opening and closing			seventeen point four	twenty-one point seven	twenty-seven point four
nine	Average DC component of rated short-circuit breaking current			��48%
ten	Rated breaking current of capacitor bank		A	four hundred
eleven	Rated short-circuit duration		S	four
twelve	Rated short-circuit breaking current breaking times		time	twenty
thirteen	Cut off time		ms	��80
fourteen	mechanical life		time	twenty thousand
fifteen	Circuit breaker quality		Kg	two hundred and sixty

VS1-40.5 Indoor High Voltage Vacuum Circuit Breaker Appearance and Installation Dimensions (Indoor High Voltage Vacuum Circuit Breaker VS-40.5 Type)

[Indoor vacuum circuit breaker]ZN63M-12 series indoor high-voltage permanent magnet vacuum circuit breaker

2026-6-10 19:50:25

I. Overview
The ZN63M-12 series indoor high-voltage permanent magnet vacuum circuit breaker (hereinafter referred to as the circuit breaker) is a three-phase AC 50Hz indoor high-voltage switchgear with a rated voltage of 12KV.
The ZN63M-12 series indoor high-voltage permanent magnet vacuum circuit breaker is a new type of indoor switchgear independently developed by our company. It mainly consists of three parts: the vacuum circuit breaker body, the controller, and the external high-voltage transformer. It has functions such as fault detection, protection control, and remote communication. The controller adopts advanced DSP chips and embedded operating systems, integrating control and protection. The controller has an RS485 interface and can be equipped with a remote communication module to meet the needs of remote communication and distribution automation in the power system, completing the four remote functions.

The ZN63M-12 series indoor high-voltage permanent magnet vacuum circuit breaker adopts a permanent magnet operating mechanism, with long service life, high reliability, and maintenance free. Suitable for exit switches of urban and rural power grid substations, segmented switches and branch switches of main lines, and user entrance switches.

[Indoor vacuum circuit breaker]VD4 series indoor vacuum circuit breaker

2026-6-10 19:50:17

VD4 vacuum circuit breaker is an indoor switchgear component insulated with air.

The circuit breaker complies with the provisions of GB1984, DL/T403, German DINVDE0670, IEC60056, 60694 and other standards. Whether under normal use conditions or fault conditions (especially short-circuit situations), as long as it is within the technical parameter range, the circuit breaker can ensure safe and reliable operation. VD4 vacuum circuit breaker can perform frequent operations or multiple short circuit current disconnections within the working current range. VD4 vacuum circuit breaker is suitable for reclosing operation and has extremely high operational reliability and service life.
The VD4 vacuum circuit breaker adopts a vertical insulation sleeve to resist the influence of various climates; And in terms of maintenance and upkeep, it is usually only necessary to occasionally clean or lubricate the operating mechanism.
The installation form of VD4 vacuum circuit breaker in the switchgear can be fixed, removable, or installed on the frame for use.

Project		unit	Data
rated voltage		kV	three point six
maximum voltage		kV	3.6 7.2 12
Rated insulation level voltage	1-minute power frequency withstand voltage	kV	forty-two
Rated insulation level voltage	Lightning impulse withstand voltage	kV	seventy-five
rated frequency		Hz	fifty
rated current		A	630��1250��1600��2000��2500��3150
Rated symmetrical short-circuit breaking current (effective value)		A	16��20��25��31.5��40��50
4S thermal stability current (effective value)		KA	16��20��25��31.5��40��50
Rated dynamic stability impulse current (peak value)		KA	40��50��63��80��100��125

[Indoor vacuum circuit breaker]VMD1-12KV/1250A Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:50:08

VMD1-12VV/1250A Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]VMD2-12KV Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:49:59

VMD2-12KV Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]VMD4-24KV Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:49:51

VMD4-24KV Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]VMD5-40.5 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:49:42

The VMD5-40.5 indoor high-voltage vacuum circuit breaker has a new generation of 40.5kV vacuum circuit breakers that are at the forefront of domestic technology. Its main feature is the use of an upper and lower layout structure, effectively reducing the depth of the circuit breaker. The circuit breaker adopts a composite insulation (or solid sealed insulation) structure, which meets the requirements of air distance and creepage distance under normal operating conditions, effectively reducing the volume of the circuit breaker. The operating mechanism is a new type of spring operated mechanism.

The technical parameters comply with GB1984, GB/T11022, and the Chinese power industry standard DL403, as well as the regulations of IEC62271-100, IEC56 standards and other relevant standards of major industrialized countries.

VMD5-40.5 indoor high-voltage vacuum circuit breaker can be widely used in power plants, power grids, metallurgy, petrochemicals, urban infrastructure construction, such as airports, buildings, subways, etc.

[Indoor vacuum circuit breaker]VTK-40.5 series indoor high-voltage vacuum circuit breaker

2026-6-10 19:49:33

The VTK-40.5 series indoor high-voltage vacuum circuit breaker is a brand new product independently developed by Taikai. It combines the highest quality vacuum arc extinguishing chamber with the most advanced permanent magnet operating mechanism, and has the advantages of high parameters, high performance, and long service life. It is particularly suitable for frequent operation and poor environmental conditions.

Key Features:
1. The Xi'an High Voltage Apparatus Research Institute has passed a complete set of type tests with complete parameter specifications;
2. For E2 level circuit breakers (with extended electrical life), the product has undergone 274 short-circuit current breaking tests and does not require maintenance;
3. For M2 level circuit breakers (with extended mechanical life), the permanent magnet mechanism has an ultra-high life of 100000 cycles, and the entire circuit breaker can withstand up to 60000 cycles without the need to replace the arc extinguishing chamber;
4. For the C2 level circuit breaker, the product has undergone a complete set of tests on the breaking capacitor bank at the Shaoxing test station, and has a very low breakdown rate;
5. The product fully meets domestic and international standards such as GB1984-2003, GB/T11022-2001, DL/T403-2001, IEC62271-100:2001, etc;
6. The product installation plan is flexible and can be assembled into fixed, handcart, or center mounted structures, suitable for various fixed switch devices such as XGN and KGN, as well as various movable switch devices such as KYN61, GBC, JYN1, etc., all of which can easily meet the five prevention requirements.

Main technical parameters of VTK-40.5 series indoor high-voltage vacuum circuit breaker:

serial number	project	unit	Parameters
one	rated voltage	kV	forty point five
two	Power frequency withstand voltage (1min)	kV	ninety-five
three	Lightning impulse withstand voltage (peak value)	kV	one hundred and eighty-five
four	rated frequency	Hz	fifty
five	rated current	A	1250, 1600, 2000, 2500
six	Rated short-circuit breaking current	kA	twenty-five	thirty-one point five
seven	4s rated short-time withstand current	kA	twenty-five	thirty-one point five
eight	Rated peak withstand current (peak)	kA	sixty-three	eighty
nine	Rated short-circuit closing current (peak)	kA	sixty-three	eighty
ten	Rated capacitor group breaking current	A	four hundred
eleven	mechanical life	time	sixty thousand
twelve	Rated short-circuit current breaking times	time	two hundred and seventy-four
thirteen	Rated operating sequence		Min-0.3 s - HeFen-180 s - HeFen

Ordering Instructions:
1. Name, model, specifications, quantity, and delivery time of the circuit breaker;
2. Voltage of energy storage motor and operating voltage of closing and opening coils;
3. Names and quantities of spare parts and components;
4. If the user has any other requirements, they can specify them when placing an order.

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:49:24

Overview:
The VS1-12 series indoor high-voltage vacuum circuit breaker is mainly used in 12kV power systems as a protection and control unit for power equipment in power plants, substations, and industrial and mining enterprises. Suitable for frequent operating places.

Key Features:
1. The circuit breaker arranges the arc extinguishing chamber and the spring operating mechanism as a unified whole. This structural design makes the operating performance of the operating mechanism more in line with the required performance of the arc extinguishing chamber opening and closing, reduces unnecessary intermediate links, lowers energy consumption and noise, and greatly improves the operating performance of the circuit breaker.
2. The arc extinguishing chamber is a ceramic insulated shell with a large creepage distance, using copper chromium contacts, cup-shaped longitudinal magnetic structure, and large breaking capacity.
3. The primary conductive circuit of the circuit breaker is installed inside an insulation cylinder made of epoxy resin cast using APG technology, effectively preventing external factors such as external impact and polluted environment from affecting the arc extinguishing chamber.
4. The maximum rated current reaches 5000A, and the rated short-circuit breaking current reaches 50kA, which are the highest parameters in China.

Main technical parameters of VS1-12/5000-50 indoor high-voltage vacuum circuit breaker:

serial number	project	unit	Numerical value
one	rated voltage	kV	twelve
two	Power frequency withstand voltage (1min)		forty-two
three	Lightning impulse withstand voltage (peak value)		seventy-five
four	rated frequency	Hz	fifty
five	rated current	A	630, 1250, 1600, 2000, 2500, 3150, 4000, 5000
six	Rated short-circuit breaking current (effective value)	kA	twenty	twenty-five	thirty-one point five	forty	fifty
seven	Rated short-time withstand current (effective value)	kA	twenty	twenty-five	thirty-one point five	forty	fifty
eight	Rated short-circuit current duration	S	four
nine	Rated peak withstand current (peak)	kA	fifty	sixty-three	eighty	one hundred	one hundred and twenty-five
ten	Rated short-circuit closing current (peak)	kA	fifty	sixty-three	eighty	one hundred	one hundred and twenty-five
eleven	Rated breaking current of single/back-to-back capacitor bank	A	630/400
twelve	mechanical life	time	twenty thousand
thirteen	Rated short-circuit current breaking times	time	thirty			twenty
fourteen	Rated operating sequence		��			��
�� Min-0.3 s - HeFen-180 s - HeFen �� Min-180s - HeFen-180 s - HeFen

Forced air cooling is required for temperatures above 4000A
Ordering Instructions:
1. Name, model, specifications, quantity, and delivery time of the circuit breaker;
2. Select the control circuit schematic and rated operating voltage;
3. Configuration scheme for overcurrent protection and closing locking components;
4. Names and quantities of spare parts and components;
5. If the user has any other requirements, they can specify them when placing an order.

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:49:16

1. Overview
The CV2-12 indoor high-voltage vacuum circuit breaker has undergone strict reliability testing and passed the full project type test. It is suitable for AC 50Hz, rated voltage 12kV, and rated current 630A~1250A, and is used for protection and control of power lines and power equipment in industrial and mining enterprises.

There are fixed and handcart types, and the handcart type is suitable for armored central cabinets such as KYN28A. Strict cabinet matching tests ensure interchangeability;
Rated power frequency withstand voltage of 42kV/1min, rated lightning impulse withstand voltage of 75kV;
Rated short-circuit breaking current 25kA~31.5kA, rated short-time withstand current 25kA~31.5kA/4s;
Adopting the APG process of first-class manufacturers to seal the pole, maintenance free, adaptable to a wide range of environments, safe and reliable, suitable for frequent operation or multiple breaking of short-circuit currents;
Using hundreds of thousands of CW series low-voltage circuit breaker spring operating mechanisms with safe operation experience, complete accessories to meet different needs, strict testing methods, and complete characteristic curve records to ensure high product quality;

According to the GB 1984 standard, it has extended electrical life E2 level, extended mechanical life M2 level, and capacitive current switching C2 level;

The circuit breaker meets the following standards:
IEC62271-100 GB 1984 "High Voltage AC Circuit Breakers"
IEC60694 GB/T 11022 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards
JB 3855 High Voltage AC Vacuum Circuit Breaker
DL/T 403 "Technical Conditions for Ordering 12kV~40.5kV High Voltage Vacuum Circuit Breakers"
DL/T615 "Guidelines for Parameter Selection of AC High Voltage Circuit Breakers"

2. Normal usage conditions
Ambient temperature
Maximum temperature:+40 ��;
The average value measured within 24 hours shall not exceed+35 ��;
Minimum temperature: -5 ��.
ambient humidity:
The daily average relative humidity is not greater than 95%;
Monthly average relative humidity not exceeding 90%;
The daily average vapor pressure shall not exceed 2.2 × 10-3MPa;
The monthly average vapor pressure shall not exceed 1.8 × 10-3MPa.
Altitude: not exceeding 1000m;
Seismic intensity: not exceeding 8 degrees;
The surrounding air is not significantly polluted by dust, smoke, corrosive gases and/or flammable gases, vapors and salt spray;
The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV.

Special usage conditions
If the working conditions used by the user differ from normal usage conditions, such as installation at an altitude exceeding 1000m, ambient air temperature exceeding the limit specified for normal usage conditions, or high temperature prone to condensation, please consult with our company.

3. Technical parameters
Technical Parameters Table of CV2-12 Indoor High Voltage Vacuum Circuit Breaker

project		unit	data
Rated voltage Ur		kV	twelve
Rated insulation level	1-minute power frequency withstand voltage Ud (effective value)	kV	Fracture, phase to phase, ground to ground	forty-two
	Lightning impulse withstand voltage Up (peak)	kV	Fracture, phase to phase, ground to ground	seventy-five
Rated frequency fr		Hz	fifty
Rated current Ir		A	630, 1250, 1600, 2000, 2500, 3150, 4000
Rated short-circuit breaking current Isc (effective value)		kA	25, 31.5, 40, 50
Rated peak withstand current Ip		kA	63, 80, 100, 125
Rated short-circuit closing current		kA	63, 80, 100, 125
Rated short-time withstand current Ik (effective value)		kA	25, 31.5, 40, 50
Rated short-circuit duration tk		s	four
Rated back-to-back capacitor bank breaking current Ibb (effective value)		A	four hundred
Rated back-to-back capacitor bank closing inrush current Ibi (peak)		kA	20 (frequency 4250Hz)
Rated cable charging breaking current Ic (effective value)		A	twenty-five
Rated operating sequence		Automatic reclosing: O-0.3s-CO-180-CO
		Non automatic reclosing: O-180s-CO-180-CO
Rated power supply voltage Uop for closing and opening devices		V	AC��110, 220�� DC��110, 220
Rated power supply voltage Ua of auxiliary circuit		V	AC��110, 220�� DC��110, 220
Mechanical lifespan*	210mm phase to phase distance circuit breaker	time	twenty thousand
	Circuit breakers with phase spacing of 150mm and 275mm		ten thousand
Classification: Mechanical life/Electrical life/Capacitive current breaking		M2/E2/C2

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:49:07

1. Overview
CV1-40.5 (ZN85A) indoor high-voltage vacuum circuit breaker is suitable for AC 50Hz, rated voltage 40.5kV, rated current 630A~1600A, and is used for protection and control of power lines and power equipment in industrial and mining enterprises.

Suitable for KYN61A switchgear and can also be installed on KYN61 switchgear;
Rated power frequency withstand voltage of 95kV/1min, rated lightning impulse withstand voltage of 185kV;
Rated short-circuit breaking current 25kA~31.5kA, rated short-time withstand current 25kA~31.5kA/4s;
Adopting domestic first-class manufacturers' vacuum arc extinguishing chambers, with low maintenance and high reliability, suitable for frequent operation or multiple short-circuit current breaking;
Adopting mature and reliable spring operating mechanisms, strict testing methods, and complete characteristic curve records to ensure high product quality;
According to the GB 1984 standard, it has extended electrical life E2 level, extended mechanical life M2 level, and capacitive current switching C2 level;

The circuit breaker meets the following standards:
IEC60694 GB/T 11022 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards
IEC62271-100 GB 1984 "High Voltage AC Circuit Breakers"
JB 3855 High Voltage AC Vacuum Circuit Breaker
DL/T 403 "Technical Conditions for Ordering 12kV~40.5kV High Voltage Vacuum Circuit Breakers"
DL/T 615 "Guidelines for Selection of Parameters for AC High Voltage Circuit Breakers"

2. Normal usage conditions

Ambient temperature
The highest temperature is+40 ��, and the average temperature measured continuously for 24 hours does not exceed+35 ��. The lowest temperature is -5 ��.

The altitude shall not exceed 1000m.
The surrounding air is not significantly polluted by dust, smoke, corrosive and/or flammable gases, vapors, and salt spray.

ambient humidity:
The daily average relative humidity does not exceed 95%;
The daily average vapor pressure shall not exceed 2.2 × 10-3 MPa;
The monthly average relative humidity does not exceed 90%;
The monthly average vapor pressure shall not exceed 1.8 × 10-3MPa.

Vibration or ground motion from outside the switchgear and control equipment can be ignored.

The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV.

Special usage conditions
If the working conditions used by the user differ from normal usage conditions, such as installation in places with an altitude exceeding 1000m, ambient air temperature exceeding the limit specified by normal applicable conditions, or high temperature prone to condensation, please consult with our company and reach a consensus.

Technical parameters of CV1-40.5 (ZN85A) indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:48:59

1. Overview

CV1-24 indoor high-voltage vacuum circuit breaker is suitable for AC 50Hz, rated voltage 24kV, rated current 630A~3150A, as protection and control for power lines and power equipment in industrial and mining enterprises. There are fixed and handcart types, and the handcart type is suitable for armored central cabinets such as KYN28A-24. Strict cabinet matching tests ensure interchangeability; Rated power frequency withstand voltage of 65kV/1min, with a break distance of 79 kV/1min; Rated lightning impulse withstand voltage of 125kV, with a break distance of 145kV; rated short-circuit breaking current of 25kA~31.5kA, rated short-time withstand current of 25kA~31.5kA/s;
Adopting domestic first-class manufacturers' vacuum arc extinguishing chambers, with low maintenance and high reliability, suitable for frequent operation or multiple short-circuit current breaking;
Adopting mature and reliable spring operating mechanisms, strict testing methods, and complete characteristic curve records to ensure high product quality;
According to GB1984 standard, it has extended electrical life E2 level, extended mechanical life M2 level, and capacitive current switching C2 level;

The circuit breaker meets the following standards:
IEC60694 GB/T 11022 "Common Technical Conditions for High Voltage Switchgear and Control Equipment"
IEC62271-100 GB 1984 "High Voltage AC Circuit Breakers"
JB 3855 High Voltage AC Vacuum Circuit Breaker
DL/T 403 "Technical Conditions for Ordering 12kV~40.5kV High Voltage Vacuum Circuit Breakers"
DL/T615 "Guidelines for Parameter Selection of AC High Voltage Circuit Breakers"
Q/GDW "Technical Specification for 20kV Circuit Breakers"

2. Normal usage conditions
Environmental temperature: maximum temperature+40 ��, average value measured within 24 hours not exceeding+35 ��, minimum temperature -5 ��;
Altitude not exceeding 1000m;
The surrounding air is not significantly polluted by dust, smoke, corrosive gases and/or flammable gases, vapors and salt spray;
Environmental humidity: The daily average relative humidity is not greater than 95%, the daily average vapor pressure is not greater than 2.2 × 10-3MPa, the monthly average relative humidity is not greater than 90%, and the monthly average vapor pressure is not greater than 1.8 × 10-3MPa;
Vibration or ground motion from outside the switchgear and control equipment can be ignored;
The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV.

3. Technical parameters
Technical parameters of CV1-24 indoor high-voltage vacuum circuit breaker

project		unit	data
Rated voltage Ur		kV	twelve
Rated insulation level	1-minute power frequency withstand voltage Ud (effective value)	kV	Fracture, phase to phase, ground to ground	forty-two
	Lightning impulse withstand voltage Up (peak)	kV	Fracture, phase to phase, ground to ground	seventy-five
Rated frequency fr		Hz	fifty
Rated current Ir		A	630, 1250, 1600, 2000, 2500, 3150, 4000
Rated short-circuit breaking current Isc (effective value)		kA	25, 31.5, 40, 50
Rated peak withstand current Ip		kA	63, 80, 100, 125
Rated short-circuit closing current		kA	63, 80, 100, 125
Rated short-time withstand current Ik (effective value)		kA	25, 31.5, 40, 50
Rated short-circuit duration tk		s	four
Rated back-to-back capacitor bank breaking current Ibb (effective value)		A	four hundred
Rated back-to-back capacitor bank closing inrush current Ibi (peak)		kA	20 (frequency 4250Hz)
Rated cable charging breaking current Ic (effective value)		A	twenty-five
Rated operating sequence		Automatic reclosing: O-0.3s-CO-180-CO
		Non automatic reclosing: O-180s-CO-180-CO
Rated power supply voltage Uop for closing and opening devices		V	AC��110, 220�� DC��110, 220
Rated power supply voltage Ua of auxiliary circuit		V	AC��110, 220�� DC��110, 220
Mechanical lifespan*	210mm phase to phase distance circuit breaker	time	twenty thousand
	Circuit breakers with phase spacing of 150mm and 275mm		ten thousand
Classification: Mechanical life/Electrical life/Capacitive current breaking		M2/E2/C2

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:48:50

The CV1-12 (VS1) indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is a new generation of vacuum circuit breakers developed and researched using advanced CAD/CAM/CAE design and manufacturing technology. This circuit breaker is used for control and protection in AC 50Hz, rated voltage 12kV and below power grids, and is widely used in industrial and mining enterprises, substations and other places.

project		unit	data
Rated voltage Ur		kV	twelve
Rated insulation level	1-minute power frequency withstand voltage Ud (effective value)	kV	Fracture, phase to phase, ground to ground	forty-two
	Lightning impulse withstand voltage Up (peak)	kV	Fracture, phase to phase, ground to ground	seventy-five
Rated frequency fr		Hz	fifty
Rated current Ir		A	630, 1250, 1600, 2000, 2500, 3150, 4000
Rated short-circuit breaking current Isc (effective value)		kA	25, 31.5, 40, 50
Rated peak withstand current Ip		kA	63, 80, 100, 125
Rated short-circuit closing current		kA	63, 80, 100, 125
Rated short-time withstand current Ik (effective value)		kA	25, 31.5, 40, 50
Rated short-circuit duration tk		s	four
Rated back-to-back capacitor bank breaking current Ibb (effective value)		A	four hundred
Rated back-to-back capacitor bank closing inrush current Ibi (peak)		kA	20 (frequency 4250Hz)
Rated cable charging breaking current Ic (effective value)		A	twenty-five
Rated operating sequence		Automatic reclosing: O-0.3s-CO-180-CO
		Non automatic reclosing: O-180s-CO-180-CO
Rated power supply voltage Uop for closing and opening devices		V	AC��110, 220�� DC��110, 220
Rated power supply voltage Ua of auxiliary circuit		V	AC��110, 220�� DC��110, 220
Mechanical lifespan*	210mm phase to phase distance circuit breaker	time	twenty thousand
	Circuit breakers with phase spacing of 150mm and 275mm		ten thousand
Classification: Mechanical life/Electrical life/Capacitive current breaking		M2/E2/C2

CV1-12 (VS1) Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]VS1 Indoor High Voltage Vacuum Circuit Breaker (VS1 Side Mounted)

2026-6-10 19:48:41

Application Fields of VDm Indoor High Voltage Vacuum Circuit Breaker
VDm type indoor high-voltage vacuum circuit breakers equipped with permanent magnet operating mechanisms can be widely used in power plants, substations, as well as various monitoring and usage links. For example, power supply for chemical plants, steel mills, automated chemical plants, airports, and large buildings.
VDm type vacuum circuit breaker is a modern vacuum circuit breaker
VDm vacuum circuit breaker is the first circuit breaker in China to realize the concept of maintenance free. The application of epoxy casting sealing technology in its high lifespan vacuum arc extinguishing chamber ensures maintenance free operation of the arc extinguishing system; The high reliability permanent magnet actuator used ensures maintenance free operation of the actuator; The electronic control part abandons the traditional auxiliary switch and replaces it with a photoelectric proximity switch, and adopts a fully electronic power supply and intelligent control unit to ensure maintenance free operation of the electronic control part.

Components and characteristics of VDm type vacuum circuit breaker
MS1 permanent magnet actuator
The core part of a vacuum circuit breaker completes the opening and closing process of the contacts and maintains the opening and closing position.
Electronic control unit
Control the opening and closing, energy storage and release of vacuum circuit breakers, and achieve various flexible locking functions.
capacitor bank
A highly reliable energy storage system.
Position detector
Used to detect the on/off position of the switch.
spindle
The only pure mechanical unit used to connect the permanent magnet actuator and the vacuum arc extinguishing chamber.

Maintenance free solution for VDm indoor high-voltage vacuum circuit breaker using bistable permanent magnet technology
The VDm vacuum circuit breaker adopts MS1 type permanent magnet operating mechanism. The institution utilizes a bistable magnetic circuit system, using two excitation coils to drive the moving iron core to the corresponding limit position, and utilizing the magnetic field energy provided by high-performance permanent magnets to keep it at the limit position. Stimulating one of the excitation coils to generate a driving force greater than the remaining holding force can activate the moving iron core of the permanent magnet mechanism.
When the control system malfunctions, a manual opening device can be used to urgently disconnect the circuit breaker.
The MS1 permanent magnet actuator eliminates the complex and vulnerable mechanical devices such as energy storage and locking of traditional mechanisms, simplifies the structure, and reduces the number of parts by more than 70% compared to traditional mechanisms, greatly improving the reliability and lifespan of the mechanism. At the same time, due to the use of capacitors as the operating power supply, it also avoids the dependence of traditional mechanisms on high-capacity dedicated power supplies and the impact of auxiliary power supply fluctuations on the operational characteristics of the mechanism.
The MS1 type permanent magnet actuator with excellent performance can operate frequently for a long time and truly achieve permanent maintenance free operation.

[Indoor vacuum circuit breaker]ZN56-12 High voltage vacuum circuit breaker

2026-6-10 19:48:33

ZN56-12 (V2000) indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor device with a rated voltage of 12KV. It is used for control and protection in industrial and mining enterprises, power plants, and substations in 10KV power systems, especially in places with frequent operation.

Introduction to the Structure of ZN56-12 High Voltage Vacuum Circuit Breaker
This circuit breaker is equipped with a ceramic vacuum arc extinguishing chamber, using copper chromium contact material and cup-shaped longitudinal magnetic field contact structure. The electrical wear rate of its contacts is low, the electrical life is long, the voltage resistance level of the contacts is high, the dielectric insulation strength is stable, the arc recovery is rapid, the current cutoff level is low, and the breaking ability is strong.

The overall structure of the circuit breaker adopts the form of operating mechanism and arc extinguishing chamber arranged in front and behind, and the main electrical circuit part is a three-phase floor standing structure. The operating mechanism is a flat spring energy storage mechanism with manual and electric energy storage functions. The operating mechanism is placed in the chassis in front of the arc extinguishing chamber, which is divided into five assembly spaces by four middle partitions. The energy storage part, transmission part, trip part, and buffer part of the operating mechanism are respectively installed in between.

[Indoor vacuum circuit breaker]ZN33B-12 Suspended High Voltage Vacuum Circuit Breaker

2026-6-10 19:48:23

ZN33B-12 suspension type high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is a highly reliable and maintenance free product of new design, which absorbs the technical essence of VD4, VK and VS1 products at home and abroad on the basis of the original ZN33B-12 product. Circuit breakers are suitable for indoor high-voltage distribution equipment with three-phase AC 50HZ and rated voltage of 12kV and below. As a protection and control unit for power grid equipment and industrial and mining enterprise power equipment, the circuit breaker has excellent performance due to the patented CDY type permanent magnet mechanism attached to it. It is particularly suitable for places with frequent operation or multiple short-circuit current interruptions.

Technical parameters of ZN33B-12 suspended high-voltage vacuum circuit breaker

serial number S��N	project Item	unit Unit	numerical value Digital Value
one	rated voltage Rated Voltage	kV	twelve
two	Rated short-time power frequency withstand voltage (1min) Rated Short Period Work Frequency Voltage Endurance (1 min)		forty-two
three	Rated lightning impulse withstand voltage (peak) Rated Thunder and Lightening Striking Endurance Voltage (Peak Value)		seventy-five
four	rated frequency Rated Frequency	HZ	fifty
five	rated current Rated Current	A	630 1250	630 1250
six	Rated short-circuit breaking current Rated Short-circuit On and Off Current	KA	twenty	thirty-one point five
seven	Rated short-time withstand current Rated Short Period Endurance Current	KA	twenty	thirty-one point five
eight	Rated short-circuit duration Rated Short-circuit Continuing Time	S	four
nine	Rated peak withstand current Rated Peak Value Endurance Current	kA	fifty	eighty
ten	Rated short-circuit closing current Rated Short-circuit On-switch Current	kA	fifty	eighty
eleven	Secondary circuit power frequency withstand voltage (1min) Secondary Loop Work Frequency Voltage Endurance (1 minute)	V	two thousand
twelve	Rated Single/Back to Back Capacitor Group On and Off Current	A	630/400
thirteen	Rated capacitor bank closing inrush current Rated Capacitor Group Enclosed Surge	KA	12.5 (Frequency not larger than 1000Hz)
fourteen	mechanical life Mechanical Lifespan	time Times	twenty thousand
fifteen	Rated current breaking times Rated Current On and Off Times		twenty thousand
sixteen	Rated short-circuit current breaking times Rated Short-circuit Current On and Off Times		fifty
seventeen	Allowable cumulative thickness of wear for dynamic and static contacts Allowed Worm Accumulated Thickness of Dynamite and Static Contact Head	mm	three
eighteen	Rated operating sequence Rated Operating Sequence		OFF minute -0.3S-ON/OFF combined minute -180S-ON/OFF

[Indoor vacuum circuit breaker]ZN27-12 High voltage vacuum circuit breaker

2026-6-10 19:48:14

The ZN27-12 high-voltage vacuum circuit breaker is a three pole indoor high-voltage vacuum circuit breaker that uses electromagnetic or spring operation. It is suitable for indoor distribution systems with three-phase AC 50Hz and rated voltage of 12kV. It can be used for protection and control in industrial and mining enterprises, power plants, substations, etc. It is especially suitable for frequent operation places such as capacitor banks, medium voltage motors, and arc furnace transformers.

Meaning of ZN27-12 High Voltage Vacuum Circuit Breaker Model

Main features of ZN27-12 high-voltage vacuum circuit breaker
Non combustible, non explosive, non polluting to the environment, with a lifespan of 10000 cycles;
Has a good sliding guide device, stable mechanical characteristics, and no bouncing when closing;
Insulation level under all working conditions, safe to use;
Can be equipped with electromagnetic or spring mechanisms, with both integral and split types, to meet the usage requirements of different cabinet types;
The vacuum arc extinguishing chamber adopts a longitudinal magnetic field contact structure, which has good resistance to welding, low contact resistance, high withstand voltage after arc, and reliable use

[Indoor vacuum circuit breaker]ZN22-40.5 Indoor high-voltage vacuum circuit breaker

2026-6-10 19:48:05

serial number	parameter name	unit	Data
			20kA	25kA	31.5kA
one	rated voltage	kV	forty point five
two	rated current	A	630, 1250, 1600	630, 1250, 1600	1250, 1600, 2000, 2500
three	Rated short-circuit breaking current	kA	twenty	twenty-five	thirty-one point five
four	Rated short-time withstand current	kA	fifty	sixty-three	eighty
five	Rated short-circuit duration	s	four

six	Rated peak withstand current	kA	fifty	sixty-three	eighty

seven	Rated short-circuit closing current (peak)	kA	fifty	sixty-three	eighty

eight	Rated short-circuit breaking current breaking times	time	twelve	sixteen	twenty

nine	Rated operating sequence		Min-0.3s HeFen-180s HeFen
ten	Rated breaking current of capacitor bank	A	six hundred and thirty

eleven	Rated back-to-back capacitor bank breaking current	A	four hundred

twelve	Rated lightning impulse withstand voltage (full wave)	kV	one hundred and eighty-five

thirteen	Rated short-time power frequency withstand voltage (1min)	kV	ninety-five

fourteen	closing time	ms	��85

fifteen	Opening time	ms	��60

sixteen	mechanical life	time	ten thousand

seventeen	Rated power of energy storage motor	W	three hundred and fifty

eighteen	Rated voltage of energy storage motor	V	AC/DC110��AC/DC220

nineteen	Energy storage time	s	��15

twenty	Rated voltage of closing electromagnet	V	AC/DC110��AC/DC220

twenty-one	Rated voltage of the opening electromagnet	V	AC/DC110��AC/DC220

twenty-two	Rated voltage of energy storage type shunt release	V	AC/DC110��AC/DC220
twenty-three	Rated voltage of voltage loss release device	V	AC/DC110��AC/DC220

twenty-four	Rated current of overcurrent release device	A	3.5 5

twenty-five	Rated current of auxiliary switch	A	AC10 DC5

twenty-six	Weight	kg	one hundred and seventy

ZN22-40.5 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZN72-40.5 Indoor high-voltage vacuum circuit breaker

2026-6-10 19:47:57

The ZN72-40.5 vacuum circuit breaker is an indoor high-voltage switchgear with a rated voltage of 40.5kV and three-phase AC 50Hz. This circuit breaker mechanism is integrated with the switch; The dedicated operating mechanism is a spring energy storage type, which can be operated using AC/DC energy storage or manually operated.

ZN72-40.5 indoor high-voltage vacuum circuit breaker has a simple structure, strong breaking capacity, long service life, complete operating functions, no explosion hazard, and easy maintenance. It is suitable for use as a control or protection switch in power plants, substations and other transmission and distribution systems, especially for breaking important loads and places with frequent operations.

serial number	name	unit	Technical Specifications
one	rated voltage	kV	forty point five
two	rated current	A	1250, 1600, 2000
three	Rated short-circuit breaking current	kA	25 31.5
four	Rated short-circuit closing current (peak)	kA	63 80
five	Rated operating sequence		O-0.3s-CO-180s-CO
six	Dynamic stability current (peak value)	kA	63 80
seven	4 S thermal stability current	kA	25 31.5
eight	Rated short-circuit current breaking times	time	twenty
nine	Rated lightning impulse withstand voltage (full wave)	kV	one hundred and eighty-five
ten	Rated short-time power frequency withstand voltage (1min)	kV	ninety-five
eleven	Rated current breaking times	time	6000 10000
twelve	mechanical life	time	6000 10000
thirteen	closing time	S	�� 0.09
fourteen	Opening time	S	�� 0.07
fifteen	Energy storage motor power	W	three hundred and fifty
sixteen	Rated voltage of energy storage motor	V	�� 110, �� 220
seventeen	Energy storage time	S	�� 15
eighteen	Rated voltage of closing electromagnet	V	-110 -220
nineteen	Rated voltage of the opening electromagnet	V	-110 -220
twenty	Rated current of overcurrent release device	A	five
twenty-one	Rated current of auxiliary switch	A	AC �� 10 DC �� 5

Note: The opening and closing times are the operating times at the highest, lowest, and rated operating voltages.

ZN72-40.5 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZN70-12 Indoor high-voltage vacuum circuit breaker

2026-6-10 19:47:48

The technical performance of ZN70 (DZN) -12 indoor high-voltage vacuum circuit breaker products has reached the international leading level and complies with standards such as GB1984, DL/T402-1999, IEC60056, etc. The ZN70-12 product can be used as an indoor transformer and distribution device with a rated voltage of 12kV and three-phase AC 50Hz, especially suitable for breaking important loads, frequent operation, and maintenance free places.

[Indoor vacuum circuit breaker]ZN82-12 Vacuum Circuit Breaker

2026-6-10 19:47:39

The ZN82-12 vacuum circuit breaker adopts the world's advanced miniaturization and high-performance arc extinguishing chamber manufacturing technology. The contact is made of low current level copper chromium alloy, with small current flow (below 3.5A) and operating overvoltage less than 2.0 times. The shape of the contact part is deliberately processed, with a longitudinal rotating magnetic field for arc extinguishing below 31.5kA and a transverse rotating magnetic field for arc extinguishing above 40kA, which can prevent local overheating of the contact surface, reduce contact wear, extend contact life, and have a rated short-circuit current breaking frequency of not less than 100 times.

The ZN82-12 vacuum circuit breaker is equipped with an electric motor spring type operating mechanism, which can be used as both AC and DC power sources. It has a small operating current and a spring energy storage time of less than 5 seconds, making it suitable for frequent operating situations.

The configuration of the operating mechanism and the main switch body is reasonable, the mechanical performance is stable and reliable, the bounce is less than 2ms, and the mechanical life is up to 30000 times.

The circuit breaker has complete auxiliary functions: it comes with anti bounce function and low-voltage capacitor release, with up to three auxiliary switches and multiple reserved contacts for backup. There are 64 pairs of secondary contact points, and there is a reliable mechanical interlock with the handcart position. At the same time, the control power supply can be AC or DC, with strong adaptability.

The 40kA vacuum circuit breaker still has a fast reclosing function (O-0.3S-CO-180S-CO) due to its advanced arc extinguishing chamber design and excellent manufacturing.

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:47:30

ZN80-12 indoor high-voltage vacuum circuit breaker is a three-phase AC 50HZ, rated voltage 12KV indoor high-voltage switchgear. This circuit breaker is a spring energy storage type, which can be operated by AC or DC or manually. It is a new type of circuit breaker that combines Siemens technology from Germany and Westinghouse technology from the United States. Suitable for control or protection switches in power plants, substations, and transmission and distribution systems, especially for breaking important loads and frequent operations in places.

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:47:22

ZN76-40.5 (VY) indoor high-voltage AC vacuum circuit breaker is a three-phase AC 50HZ, rated voltage 40.5KV, rated current 1250A or 2000A indoor device, equipped with a dedicated spring operating mechanism, used for protection and control in industrial and mining enterprises, power plants and distribution stations, and suitable for frequent operation places.

[Indoor vacuum circuit breaker]ZN75-12 High voltage vacuum circuit breaker

2026-6-10 19:47:13

ZN75-12 (VK) indoor high-voltage vacuum circuit breaker is an indoor device with three-phase AC 50HZ, rated voltage of 12KV, and rated current of 630-4000A. It is equipped with a dedicated spring operated mechanism and is used for protection and control in industrial and mining enterprises, power plants, and distribution stations. It is also suitable for frequent operation sites. It can be used in areas with an altitude of up to 3000 meters and can be used in tropical, cold, and desert regions.

[Indoor vacuum circuit breaker]ZN18-12 High voltage vacuum circuit breaker

2026-6-10 19:47:04

Overview
The ZN18-12 (CK) vacuum circuit breaker is a derivative product developed based on the ZN18-12 (VK-10) vacuum circuit breaker to meet market competition demands and meet user requirements. Its main purpose is to enable the installation of the ZN18-12 (VK) vacuum circuit breaker on switchgear models such as ZS1 (ABB) and GZS1 (Senyuan), providing users with an additional choice of vacuum circuit breaker.

II. Environmental conditions for use
1. Surrounding air temperature:+40 ��~-15 ��, and the average value measured within 24 hours does not exceed 35 ��; Daily temperature difference less than 15k;
2. The altitude shall not exceed 1000m;
3. The surrounding air is not significantly polluted by dust, smoke, corrosive or combustible gases, steam or salt spray;
4. Relative temperature of indoor environment: daily average not exceeding 95%, monthly average not exceeding 90%;
5. The seismic intensity shall not exceed 8 degrees;
6. Indoor use;
7. Any requirements beyond the above environmental conditions shall be agreed upon by the user and the manufacturer.

Scope of use of ZN18-12 high-voltage vacuum circuit breaker
• Rated voltage 12kV;
Rated current 630A, 1250A, 3150A;
Rated short-circuit breaking current 25kA, 31.5kA, 40kA;
It can be used as a control and protection switch for substations, especially suitable for breaking important loads and frequent operations, such as substations and capacitor banks that require small footprint, oil-free safety and high reliability.

[Indoor vacuum circuit breaker]V2000-12 series indoor AC high-voltage vacuum circuit breaker

2026-6-10 19:46:55

The V2000-12 series indoor AC high-voltage vacuum circuit breaker is suitable for networks with 50Hz and rated voltage of 12kV. It is the second generation product of the VS1 series. The vacuum arc extinguishing chamber can achieve self-renewal, extending the working life. In the vacuum arc extinguishing chamber, the contact speed, quality, and stroke are small, and low spring force is sufficient to operate the circuit breaker. Therefore, the operating mechanism of the circuit breaker has minimal wear and almost no corresponding maintenance and upkeep. Its supporting products include mid mounted switchgear, fixed switchgear, etc., which can be used as control and protection equipment in industrial and mining enterprises, power plants, substations, and other places. It is especially suitable for industries that require frequent operation such as metallurgy and arc steelmaking.

The operating mechanism of the V2000-12 series indoor AC high-voltage vacuum circuit breaker is a spring energy storage type, which can be operated electrically or manually.

[Indoor vacuum circuit breaker]HSV1 series intelligent low-voltage vacuum circuit breaker

2026-6-10 19:46:46

The HSV1 series intelligent low-voltage vacuum circuit breaker is mainly suitable for distribution networks with AC 50Hz, rated working voltages of 400V and 690V, and rated working currents of 630A to 3200A. It is used to distribute electrical energy, protect lines, and prevent power equipment from being damaged by overload, undervoltage, short circuit, and single-phase grounding faults. Under normal conditions, it can also be used for infrequent switching of lines. The core components of the circuit breaker adopt intelligent controllers with precise selective protection, which can avoid the need for products to comply with GB 14048.2 and IEC 60947-2 standards.

[Indoor vacuum circuit breaker]3AV5 Type Sealed Pole Vacuum Circuit Breaker

2026-6-10 19:46:38

The primary part of the 3AV5 fixed sealed pole vacuum circuit breaker adopts fixed sealing technology, which assembles the upper and lower output sockets, conductive clamps, flexible connections, and insulation rods together, so that the surface of the arc extinguishing chamber is not affected by the external environment.

The 3AV5 fixed sealed pole vacuum circuit breaker has a small number of parts, simple operation, high reliability, long service life, and truly achieves complete maintenance. The phase spacing is small (150mm), the overall size is small, and a 650mm wide central cabinet can be used.

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:46:29

The VGP (alternative to ZN96-12) indoor high-voltage vacuum circuit breaker is widely used in indoor armored air insulated switchgear. It complies with standards such as GB1984-2003, DL/T403-2000, German DINVDE0670, IEC62271-100:2001, and IEC60694. Under normal operating conditions, as long as it is within the technical parameters of the circuit breaker, it can ensure safe and reliable operation in the corresponding voltage level of the power grid.

The three-phase pole part of the VGP (which can replace ZN96-12) indoor high-voltage vacuum circuit breaker is composed of the vacuum interrupter and the upper and lower outlet terminals directly sealed in the epoxy resin through the automatic pressure gel process (APG). The arc extinguishing chamber is made by Siemens or made in Germany, which reduces the pollution of the circuit breaker adjustment link and the external environment on the arc extinguishing chamber shell and improves the reliability.

VGP vacuum circuit breakers have special advantages in situations where frequent operation or long breaking life is required. This vacuum circuit breaker has a reclosing function, extremely high operational reliability and service life, and the pole part is maintenance free.

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:46:21

main purpose
The VGP-24 indoor high-voltage vacuum circuit breaker is an indoor high-voltage switchgear with a rated voltage of 24KV and three-phase AC 50HZ. It is suitable for control or protection switches in power plants, substations, industrial and mining enterprises and other transmission and distribution systems, especially for breaking important loads and frequent operations.
The manufacturing of circuit breakers complies with China's national standards GB1984-2003 "AC High Voltage Circuit Breakers", JB3855-1966 "Technical Conditions for Ordering 3.6-40.5KV Indoor Vacuum Circuit Breakers" and relevant IEC standards, and has reliable interlocking function.
The operating mechanism of the circuit breaker is a spring energy storage type, which can be operated by AC or DC energy storage or manually operated.
The circuit breaker can also be equipped with a long-life permanent magnet operating mechanism, with a mechanical lifespan of up to 100000 times, and can be used in extremely frequent operating situations.
The circuit breaker is designed in a front and rear split structure, which can be used as a fixed installation unit or as a mid mounted unit for use with chassis vehicles.

Normal working environment
1. Altitude: �� 2000m,>2000m requires special customization
2. Environmental humidity: maximum+40 ��, minimum -25 ��
3. Relative temperature: The daily average is not greater than 95%, and the monthly average is not greater than 90%.
4. Earthquake intensity: below level 8
5. Places without fire, explosion, corrosive gases, and severe vibrations.

Main technical parameters of VGP-24KV indoor high-voltage vacuum circuit breaker

project	unit	parameter
rated voltage	KV	twenty-four
rated frequency	HZ	fifty
rated current	A	630 1250 1600
Rated short-circuit breaking current	KA	20 25 31.5
Rated short-circuit closing current (peak)	KA	50 63 80
Rated short-circuit duration	S	four
Rated short-circuit breaking current breaking times	time	twenty
Rated operating sequence		0-0.3s-CO-180s-CO
Rated lightning impulse withstand voltage (peak)	KV	one hundred and twenty-five
1-minute power frequency withstand voltage	KV	sixty-five
closing time	ms	��100
Opening time	ms	��50
mechanical life	time	twenty thousand
Rated energy storage and operating voltage	V	��220/110
Cut off time	ms	��65
Energy storage time	s	��10

Mechanical characteristic adjustment parameters of VGP-24KV indoor high-voltage vacuum circuit breaker

project	unit	parameter
Contact opening distance	mm	15±1
Contact overtravel	mm	3.5±0.5
Opening speed	m/s	0.9-1.2
closing speed	m/s	0.5-0.8
Contact closing bounce time	ms	��2
Rated contact pressure	N	20KA(2000��200) 25KA(2400±200) 31.4KA(3100±200)
Three phase asynchronous opening and closing	ms	��2

Appearance and installation dimensions

VGP-24KV Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZN73A-12/D Indoor High Voltage Permanent Magnet Vacuum Circuit Breaker

2026-6-10 19:46:12

ZN73A-12/D indoor high-voltage permanent magnet vacuum circuit breaker is an advanced product in China. This product adopts the self-developed YG type permanent magnet operating mechanism, which has manual and electric opening and closing functions. It eliminates the complex and vulnerable energy storage and locking devices in traditional spring mechanisms, greatly simplifying the transmission process, especially the manual opening device, which is used for emergency load opening operation in case of secondary operation circuit failure. This truly achieves high reliability, long service life, maintenance free, and simple maintenance. Under normal circumstances, the service life is up to 100000 times.

ZN73A-12/D indoor high-voltage permanent magnet vacuum circuit breaker model meaning

Main technical parameters of ZN73A-12/D indoor high-voltage permanent magnet vacuum circuit breaker

project	unit	parameter
rated voltage	KV	twelve
Rated short-time power frequency withstand voltage (1min)	KV	forty-two
Rated lightning impulse high voltage (peak)	KV	seventy-five
rated frequency	HZ	fifty
rated current	A	630-1250 1250-3150 1250-4000
Rated short-circuit breaking current	kA	20 25 31.5 40
Rated thermal stability current (effective value)	kA	20 25 31.5 40
Rated peak withstand current	kA	50 63 80 100
Rated short-circuit closing current	kA	50 63 80 100
Rated short-circuit duration	S	four
Secondary circuit power frequency withstand voltage (1min)	V	two thousand
Rated operating sequence		Off/off -0.3s - on/off -180s - on/off/off/on/off
Rated breaking current of single/back-to-back capacitor bank	A	six million three hundred and eight thousand and four hundred
Opening time (rated voltage)	ms	��50
Closing time (rated voltage)	ms	��75
mechanical life	time	��100000
Rated short-circuit current breaking times	mm	thirty
Allowable cumulative thickness of wear for dynamic and static contacts	mm	three
Contact opening distance	mm	11±1*
overstroke	mm	3.5±0.5
Contact closing bounce time	ms	��2(40KA��3)
Three phase asynchronous opening and closing	ms	��2
Average opening speed	m/s	0.8-1.2
Average closing speed	m/s	0.5-0.8
Interphase center distance	mm	210 275
Main electrical circuit resistance	u��	��45(Less than 1250A)��40(1600-2000A)��30(more than 2500A)
Contact closing contact pressure	N	2000±200(20kA) 2400±200(25KA) 3100±200(31.5KA) 4300±200(40KA)

There are special requirements for the operation power supply (such as DC110V, AC/DC operation), and the technical parameters of the permanent magnet mechanism need to be adjusted.
The contact distance of Westinghouse arc extinguishing chamber is 9 ± 1mm
The contact opening distance of Siemens arc extinguishing chamber is 8 ± 1mm

Appearance and installation dimensions of ZN73A-12/D indoor high-voltage permanent magnet vacuum circuit breaker

ZN73A-12/D indoor high-voltage permanent magnet vacuum circuit breaker

[Indoor vacuum circuit breaker]ZK2-500 type vacuum circuit breaker

2026-6-10 19:46:02

Outline dimensions and installation dimensions of ZK2-500 vacuum circuit breaker

ZK2-500 vacuum circuit breaker is suitable for industrial and mining enterprises, power plants, substations, and frequent operations with AC 50HZ, rated voltage up to 1140KV, and rated current up to 500A. Mainly used for the protection and control of electrical equipment.
The contact belongs to the vacuum medium, therefore, it has small volume, high pressure resistance, high breaking capacity, long service life, and does not require maintenance. Especially due to its advantages of not exposing the arc and being safe and reliable, it is widely used in industrial sectors such as coal, power, chemical, metallurgy, and petroleum.

Technical parameters of ZK2-500 vacuum circuit breaker

Rated working voltage 1140V
Rated working current 500A
Rated short-circuit breaking current 9KA
Rated short-circuit breaking frequency 16 times
Rated current breaking frequency 3000 times
Mechanical lifespan of 15000 cycles
Rated short-time withstand current 9KA
Rated short-time withstand time 4S
Rated power frequency withstand voltage 10KV
Rated opening torque 4 ± 0.4mm
Contact self closing force 100 ± 10N
Contact reaction force at rated opening moment 140 ± 14N
Contact resistance under rated contact pressure �� 100 ��

[Indoor vacuum circuit breaker]ZK3M-1.14/400 Permanent magnet vacuum circuit breaker

2026-6-10 19:45:53

ZK3M-1.4/400 permanent magnet vacuum circuit breaker

[Indoor vacuum circuit breaker]ZK2M-1.14/500 Permanent magnet vacuum circuit breaker

2026-6-10 19:45:45

ZK2M-11.4/500 permanent magnet vacuum circuit breaker

[Indoor vacuum circuit breaker]ZK1M-1.14/630 Permanent magnet vacuum circuit breaker

2026-6-10 19:45:36

ZK1M-11.4/630 permanent magnet vacuum circuit breaker

[Indoor vacuum circuit breaker]DZ-400/1140 AC Low Voltage Vacuum Circuit Breaker

2026-6-10 19:45:27

model	rated voltage	rated current	Ultimate on-off capability	Electrical lifespan	mechanical life	Inherent opening time	closing time
DZ1-400/1140	1140V	400A	8kA	3000 times	20000 times	�� 30ms	�� 100ms

DZ-400/1140 AC Low Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]Indoor vacuum circuit breaker

2026-6-10 19:45:18

ZN28Z-12 series integral vacuum circuit breaker

Product features
1. Complete product range: rated current from 630A to 4000A, rated short-circuit breaking current
From 20kA to 50kA.
2. Advanced miniaturized copper chromium contact longitudinal magnetic field arc extinguishing chamber
3. Convenient and flexible structural forms and installation methods
4. Guaranteed high reliability and stability
5. Good product series and universality, easy to maintain and use for users
6. Complete product type test: rated short-circuit opening and closing current, rated dynamic stability, full capacity opening and closing
The original indicators such as the DC component value during interruption are higher than the national standards.

Technical parameters of ZN28Z-12kV indoor vacuum circuit breaker

serial number	name		unit	model
serial number	name		unit	ZN28-12/20	ZN28-12/25	ZN28-12/32	ZN28-12/40	ZN28-12/50
one	rated voltage		kV	twelve
two	rated current		A	six hundred and thirty one thousand one thousand two hundred and fifty	one thousand one thousand two hundred and fifty	one thousand one thousand two hundred and fifty two thousand	one thousand two hundred and fifty one thousand and six hundred two thousand two thousand and five hundred three thousand one hundred and fifty	four thousand
three	1-minute power frequency withstand voltage	Phase by phase ground	kV	forty-two
three	1-minute power frequency withstand voltage	fracture		forty-eight
four	Lightning impulse withstand voltage	Phase by phase ground		seventy-five
four	Lightning impulse withstand voltage	fracture		eighty-four
five	Rated short-circuit breaking current		kA	twenty	twenty-five	thirty-one point five	forty	fifty
six	Rated short-circuit breaking current breaking times		time	fifty	fifty	fifty	thirty	twenty
seven	Percentage of DC component					45%	45%	35%
eight	Rated dynamic stability current (peak value)		kA	fifty	sixty-three	one hundred	one hundred and thirty	one hundred and thirty
nine	4s thermal stability current		kA	twenty	twenty-five	thirty-one point five	forty	fifty
ten	Rated operating sequence			��	��	��	��	��
eleven	Rated out of step breaking current		kA			eight	ten	twelve point five
twelve	Rated earth fault breaking current for different phases		kA	seventeen point three	twenty-one point seven	twenty-seven point three	thirty-four point six	forty-three point three
thirteen	Rated breaking current of a single capacitor bank		A	six hundred and thirty
fourteen	Rated back-to-back capacitor bank breaking current		A	four hundred
��O-0.3s-CO-180s-CO ��O-180s-CO-180s-CO

[Indoor vacuum circuit breaker]ZN63u-15 Vacuum Circuit Breaker

2026-6-10 19:45:10

ZN63u-15 vacuum circuit breaker

Product features

1. Mechanical durability and electrical durability
2. At rated current, the allowable number of disconnections is 10000 times
3. Under rated short-circuit current, the allowable number of disconnections is 20 times
4. Easy maintenance: only a small amount of cleaning or lubrication is needed for the operating mechanism
5. Rated current from 630A-1250A
6. The rated short-circuit breaking current ranges from 20kA to 31.5kA
7. Vertical insulation cylinder
8. Capable of defending against various environmental influences
9. Good product series and universality, easy to maintain and use for users

Technical parameters of ZN63u-15 vacuum circuit breaker

serial number	name		unit	model
				ZN63u-15
one	rated voltage		kV	fifteen
two	Limi power frequency withstand voltage	Relatively speaking, time	kV	forty-two
		Isolation fracture
three	Lightning impulse withstand voltage	Relatively speaking, time	kV	ninety-five
		Isolation fracture
four	Rated short-circuit breaking current		kA	thirty-one point five
five	Rated short-circuit breaking current breaking times		time	twenty
six	Percentage of DC component			41%
seven	Rated dynamic stability current (peak value)		kA	one hundred
eight	3-second thermal stability current		kA	thirty-one point five
nine	Rated operating sequence			��O-0.3s-CO-180s-CO
ten	Rated cable charging breaking current		kA	25A 24 times
eleven	Rated earth fault breaking current for different phases		kA
twelve	Rated breaking current of a single capacitor bank		A
thirteen	Rated back-to-back capacitor bank breaking current		A

[Indoor vacuum circuit breaker]VB85-40.5/T2000-31.5 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:45:01

The VB85-40.5/T2000-31.5 indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is suitable for use in three-phase AC 50Hz, rated voltage 40.5kV power systems, and can be used for load current, overload current, and fault current in industrial and mining industries, power plants, and substations.
The circuit breaker and operating mechanism are arranged vertically, effectively reducing the depth of the circuit breaker.
The three-phase arc extinguishing chamber and associated charged body are isolated by three independent epoxy resin insulation cylinders, forming a composite insulation structure. The circuit breaker meets the requirements of air distance and creepage distance under normal operating conditions, and effectively reduces the volume of the circuit breaker. The main electrical circuit vacuum arc extinguishing chamber and the dynamic and static conductive connections are installed inside an insulating cylinder, with a phase spacing of only 300mm. All electrical connections in the main circuit are fixed and have high reliability. The insulation cylinder is installed above the circuit breaker frame.
The spring operated mechanism specially designed for this new type of circuit breaker is installed inside the circuit breaker frame, and its structural characteristics are more suitable for the upper and lower layout of the circuit breaker, and become an integral part of the overall structure of the circuit breaker. The mechanism design is simple, and the output curve and its performance are more suitable for the characteristics and requirements of 40.5KV vacuum circuit breakers. The overall layout is reasonable, beautiful, and concise. Compact size, flexible operation, reliable electrical performance, long service life, easy maintenance, and maintenance free mechanism.
This circuit breaker is suitable for frequent operation, various occasions, and places with harsh operating conditions.

Main Technical Parameters of VB85-40.5/T2000-31.5 Indoor High Voltage Vacuum Circuit Breaker

project	unit	data
rated voltage	kV	forty point five
rated current	A	two thousand
rated frequency	Hz	fifty
Rated short-circuit breaking current	kA	thirty-one point five
Rated short-circuit closing current (peak)		eighty
4s rated short-time withstand current		thirty-one point five
Rated peak withstand current		eighty
Short time (1min) power frequency withstand voltage	kV	ninety-five
Lightning impulse withstand voltage (peak value)	kV	one hundred and eighty-five
Rated operating sequence		O-0.3S-CO-180s-CO
Rated short-circuit breaking current breaking times	time	twenty
mechanical life	time	ten thousand
Cut off time	ms	��80
Single capacitor group breaking current	A	six hundred and thirty
Back to back capacitor bank breaking current	A	four hundred
Rated operating voltage	V	-110/��110��-220/��220

[Indoor vacuum circuit breaker]VB12-40.5 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:44:52

The VB12 indoor vacuum circuit breaker is suitable for 35KV three-phase AC 50HZ power systems. The arc extinguishing chamber of this circuit breaker is made of ceramic structure and adopts longitudinal magnetic field contacts. It has a small volume, and the diffusion arc current generated during disconnection is uniformly distributed on the contacts, without local melting phenomenon. It also has low arc energy voltage (20-200V) and low current cutoff value (4-5A), and is equipped with a highly reliable operating mechanism.

This circuit breaker adopts a spring energy storage mechanism, which can be operated by AC energy storage or DC, or manually. This circuit breaker uses special contact materials, which make the arc extinguishing chamber have high breaking capacity and long service life. This circuit breaker has a simple structure, strong breaking capacity, long service life, complete operating functions without explosion hazards, and simple maintenance. It is suitable for controlling or protecting switches in power plants, substations and other distribution systems, especially for breaking heavy loads and frequent operations.

Main technical parameters of VB12-40.5 indoor high-voltage vacuum circuit breaker

Appearance and installation dimensions

[Indoor vacuum circuit breaker]ZN103A-40.5 Vacuum Circuit Breaker

2026-6-10 19:44:43

The ZN103-40.5E indoor medium voltage AC vacuum circuit breaker is a new generation vacuum circuit breaker. The main circuit adopts a solid insulation structure and utilizes advanced epoxy sealing technology to organically combine the vacuum arc extinguishing chamber, main electrical circuit, insulation support, etc. into an integrated sealed pole for the first time, successfully solving the environmental tolerance problem of vacuum circuit breakers fundamentally. The integrated solid sealed pole adopts self convection ventilation technology, cleverly solving the problem of heat dissipation difficulties caused by solid insulation structures.

Features:

The main circuit and operating mechanism of the circuit breaker are arranged in an upper and lower structure, optimizing the electric field distribution, increasing insulation reliability, and reducing the size of the circuit breaker in the depth direction, resulting in a significant reduction in the depth of the switchgear.

The conductive part of the main circuit is integrated into the epoxy resin pole, which protects the arc extinguishing chamber from environmental and mechanical damage, and eliminates phase to phase and surface flashover of the circuit breaker, greatly improving the external insulation level of the circuit breaker.

The current carrying components are reliably fixed in their corresponding positions by epoxy resin poured around them, without the need for additional fasteners, reducing the number of parts for the circuit breaker pole, lowering assembly errors, and improving the reliability of installing circuit breakers.

Due to the adoption of sealing technology, the volume of the circuit breaker has been greatly reduced, and the equipped switchgear cabinet is 1200mm wide, 2400mm high, and 2600mm deep.

The ZN103 circuit breaker is a self-supporting structure based on the base plate, which completely overcomes the influence of the sinking of the circuit breaker on the engagement of the primary contact and is convenient for handling.

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:44:35

ZN48A-40.5 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:44:26

ZN42-27.5 indoor high-voltage vacuum circuit breaker is mainly used for the power supply and distribution system of indoor single-phase AC 50HZ electrified railway traction substations, switching stations, and partition pavilions, as the railway power traction power supply system for receiving and distributing electrical energy.

One Main features of ZN42-27.5 indoor high-voltage vacuum circuit breaker
1. New spring operating mechanism and ceramic vacuum arc extinguishing chamber produced using advanced foreign technology
2. Strengthen the installation of insulation type current transformers on the frame (optional)
3. Can be equipped with manual or electric propulsion mechanism
4. It can be installed separately in the indoor grid type interval or in the 27.5KV electrified railway dedicated switchgear.

II Main technical parameters of ZN42-27.5 indoor high-voltage vacuum circuit breaker
Number Name Unit Value
Rated voltage KV 27.5
2. Maximum voltage KV 31.5
3 rated insulation level lightning impulse withstand voltage between the fracture points, relative to ground KV 185 (�� 1000M)/230 (�� 4000M)
1MIN power frequency withstand voltage fracture, relative to ground 95 (�� 1000M)/120 (�� 4000M)
4 rated frequency HZ 50
5 rated current A 1250, 1600
6 rated short-circuit breaking current KA 25, 31.5
7 rated short-circuit closing current KA 63, 80
8 rated peak withstand current KA 63, 80
Rated short-time withstand current KA 25, 31.5
10 rated short-circuit duration S 4
11 rated capacitor bank breaking current A 400
12 rated operating sequence O -&SHY; 0.3S-&SHY; CO-180S-&SHY; CO
13 Accumulated wear amount of dynamic and static contacts MM 3
14 rated short-circuit breaking current breaking times 30 times
15 mechanical life cycles 10000
Contact pressure of 16 contacts N 3000 ± 300
17 Closing time MS �� 150
18 opening time MS 25 �� S �� 60
19 disconnection time MS �� 80
20 Energy Storage Motor Power W 350
21 Energy storage motor voltage: AC110V, DC110V, AC220V, DC220V
22 Energy storage time S �� 15
23 points, rated voltage of closing electromagnet V AC110V, DC110V, AC220V, DC220V
24 contact opening distance MM 26+2-1
25 contact spring compression MM (25KA): 3.5-5 (31.5 KA): 6 ± 1
Main circuit resistance of 26 �� 50 (1250A), 35 �� (1600A)
27 average closing speed M/S 0.9+0.2-0.3
28 average opening speed M/S 1.4 ± 0.2
29 contact closing bounce time MS �� 3
Note: Number 3 in the table is a factory inspection parameter for lightning impulse withstand voltage of 230KV and 1MIN power frequency withstand voltage of 120KV at altitudes of 1000-4000M

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:44:17

ZN40-12/630~1250-31.5, ZN41-12/1600~4000-40/50 vacuum circuit breakers are indoor high-voltage switchgear with a rated voltage of 12kV and three-phase AC 50Hz. The structure of this circuit breaker is a frame structure. The circuit breaker can be equipped with CD10 electromagnetic operating mechanism or CT8 spring operating mechanism. It can be used as the preferred circuit breaker for switchgear such as GG1A (F2) and XGN2-12.

The ZN40-12 and ZN41-12 indoor high-voltage vacuum circuit breakers have a simple structure, strong breaking capacity, long service life, complete operating functions, no explosion hazard, and easy maintenance. They are suitable for use as control or protection switches in power plants, substations, and other transmission and distribution systems, especially for breaking important loads and frequent operations.

serial number	name	ZN40-12			ZN41-12
one	Rated voltage (kV)	twelve
two	Rated current (A)	six hundred and thirty	one thousand two hundred and fifty	one thousand and six hundred	2000 2500 3150 4000
three	Rated breaking current (kA)	sixteen twenty	twenty thirty-one point five	thirty-one point five	40 50
four	Dynamic stability current (kA) (peak value)	forty fifty	fifty eighty	eighty	100 125
five	4-second thermal stability current (kA)	sixteen twenty	twenty thirty-one point five	thirty-one point five	40 50(3s)
six	Rated short-circuit closing current (kA) (peak value)	forty fifty	fifty eighty	eighty	100 125
seven	Rated short-circuit current breaking times (times)	thirty			thirty
eight	operating sequence	O-0.3s-CO-180s-CO			O-180s-CO-180s-CO
nine	Rated lightning impulse withstand voltage (kA)	75 (85 between fracture surfaces)
ten	1-minute power frequency withstand voltage (kV)	42 (48 between fracture surfaces)
eleven	Mechanical lifespan (times)	ten thousand
twelve	Rated current breaking times (times)	ten thousand

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:44:08

ZN57-12 indoor high-voltage vacuum circuit breaker is used in XGN15-12 (Z) box type fixed AC metal enclosed switchgear, which can replace the load switch as the incoming switch of the distribution substation and provide backup protection for the outgoing cabinet; At the same time, it can also be used as an outgoing line protection switch and a distribution transformer with a control capacity greater than 1250kVA. It can also be used as a connecting circuit breaker for dual power supply incoming lines. This product is suitable for 3.6-12kV three-phase AC single busbar and single busbar segmented distribution systems.

Structural characteristics of ZN57-12 circuit breaker:

·The circuit breaker adopts a three column structure, with three vacuum arc extinguishing chambers fixed in insulation cylinders cast with epoxy resin. The phases are solid insulated, with small external dimensions and a phase distance of 210mm (similar to SF6 load switches), making it easy to install in XGN15-12 high-voltage switchgear and share the main busbar with SF6 load switchgear;
·The operating mechanism and circuit breaker are arranged in an integrated manner, with the mechanism installed on the side and the three-phase arc extinguishing chamber arranged in the rear, middle, and front. The operating mechanism can be installed outside the switch cabinet door for easy maintenance of the operating mechanism and its auxiliary switches. Its transmission system structure is simple, with few adjustment steps, fully ensuring the mechanical characteristic parameters of the arc extinguishing chamber, and the mechanical life can reach 20000 times. Circuit breakers have high reliability and require minimal maintenance.
·Oil free and pollution-free environment.
·The vacuum arc extinguishing chamber adopts copper chromium contact material and longitudinal magnetic field contact structure, which has the advantages of strong breaking ability, high insulation strength, low current cutoff value, light burning loss, long electrical life, and maintenance free operation throughout the entire working period.

ZN57-12 indoor high-voltage vacuum circuit breaker operating environment:

The ambient air temperature is+40 ��, -15 ��;
Altitude not exceeding 1000 meters;
Environmental temperature: Daily average relative humidity not exceeding 95%, monthly average relative humidity not exceeding 90%; Water vapor pressure: daily average not exceeding 2.2kPa, monthly average not exceeding 1.8kPa;
A place without fire, explosion, severe pollution, chemical corrosion, and severe vibration.

[Indoor vacuum circuit breaker]VSC1(SS1)-12 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:44:00

VSC1 (SS1) -12 indoor high-voltage vacuum circuit breaker is an indoor high-voltage switchgear suitable for use in three-phase power systems with a rated voltage of 12KV and 50HZ. It is used as a protective and control electrical device. Due to the special advantages of vacuum circuit breakers, it is particularly suitable for frequent operation at rated current or multiple short circuit current breaking locations. The VSC1 (SS1) -12 indoor high-voltage vacuum circuit breaker is installed in a fixed manner and is mainly used for fixed switchgear. This circuit breaker can be used independently or for ring network power supply, box type transformers, or various non-standard power supply systems.

VSC1 (SS1) -12 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]VSC1(VBM7)-12 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:43:51

VSC1 (VBM7) -12 indoor high-voltage vacuum circuit breaker is an indoor high-voltage switchgear suitable for use in three-phase power systems with a rated voltage of 12 kV and a frequency of 50HZ. It is used as a protective and control electrical device. Due to the special advantages of vacuum circuit breakers, it is particularly suitable for frequent operation at rated current or multiple short-circuit current breaking locations. The VSC1 (VBM7) -12 indoor high-voltage vacuum circuit breaker adopts a fixed installation and is mainly used for fixed switchgear. This circuit breaker can be used independently or for ring network power supply, box type transformers, or various non-standard power supply systems.

serial number	project		unit	data
one	rated voltage		KV	twelve
two	Maximum operating voltage		KV	six hundred and thirty	six hundred and thirty	six hundred and thirty
three	rated current		A	one thousand two hundred and fifty	one thousand two hundred and fifty	one thousand two hundred and fifty
four	Rated short-circuit breaking current		KA	twenty	twenty-five	thirty-one point five
five	Rated short-circuit closing current		KA	fifty	sixty-three	eighty
six	Rated peak withstand current		KA	fifty	sixty-three	eighty
seven	4S rated short-circuit withstand current		KA	twenty	twenty-five	thirty-one point five
eight	Rated insulation level	Power frequency withstand voltage (before and after rated breaking)	KV	42 (fracture 48)
		Impact withstand voltage (before and after rated breaking)		75 (fracture 84)
nine	Rated operating sequence			Fen-0.3-HeFen180s-HeFen
ten	mechanical life		time	one thousand
eleven	Rated short-circuit breaking current breaking times		time	fifty
twelve	Rated closing voltage of operating mechanism (DC)		V	110,220
thirteen	Rated opening voltage of operating mechanism (DC)		V	110,220
fourteen	Contact stroke		mm	11±1
fifteen	Overtravel (compression length of contact spring)		mm	3.5±0.5
sixteen	Three phase opening and closing bounce time		ms	��2
seventeen	Contact closing bounce time		ms	��2
eighteen	Average opening speed		m/s	0.9~0.12
nineteen	Average closing speed		m/s	0.4~0.8
twenty	Opening time	Under the highest operating voltage	s	��0.05
		At the lowest operating voltage		��0.08
twenty-one	closing time		s	zero point one
twenty-two	Main circuit resistance of each phase		�Ԧ�	sixty		fifty
twenty-three	Dynamic and static contacts, allowable wear and accumulated thickness		mm	three

[Indoor vacuum circuit breaker]VD9-12 Indoor Permanent Magnet High Voltage Vacuum Circuit Breaker

2026-6-10 19:43:42

VD9-12 indoor permanent magnet high-voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is an indoor switchgear used in 12KV power systems, serving as a protection and control unit for power grid equipment and industrial and mining enterprise power equipment. Due to the use of patented CDY permanent magnet mechanism and direct transmission structure design, the circuit breaker has excellent performance, making it particularly suitable for frequent operation or multiple short-circuit current breaking places. The circuit breaker is equipped with a dedicated propulsion mechanism to form a handcart unit.

[Indoor vacuum circuit breaker]VD��-24 Type Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:43:33

VD �� -24 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]VST1-24 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:43:25

VST1-24 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZNY2-10(6)/630-12.5 type intelligent permanent magnet vacuum circuit breaker

2026-6-10 19:43:16

ZNY2-10 (6)/630-12.5 Intelligent Permanent Magnet Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZN73A-12 Intelligent Permanent Magnet Vacuum Circuit Breaker

2026-6-10 19:43:07

ZN73A-12 Intelligent Permanent Magnet Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZN85B series indoor high-voltage vacuum circuit breaker

2026-6-10 19:42:58

The ZN85B circuit breaker adopts a structure of arc extinguishing chamber and operating mechanism arranged in front and behind. The operating mechanism adopts a spring operating mechanism of the same form as VS1, which is placed in the chassis in front of the vacuum arc extinguishing chamber. Its operating performance is more in line with the opening and closing performance of the arc extinguishing chamber, reducing unnecessary intermediate links and making the performance of the circuit breaker more reliable; Adopting an improved screw propulsion mechanism, it is labor-saving, stable, and has good self-locking performance

Main technical parameters of ZN85B series indoor high-voltage vacuum circuit breaker

Rated voltage: 40.5KV
Rated frequency: 50HZ
Rated current: 630A-2000A
Rated short-circuit breaking current: 20KA-31.5KA
The optimized VS1 spring operating mechanism is equipped with KYN61, KYN61B and other switch cabinets.

[Indoor vacuum circuit breaker]VS1 Permanent magnet vacuum circuit breaker

2026-6-10 19:42:50

The VS1-12 permanent magnet vacuum circuit breaker achieves all the functions of a traditional circuit breaker by combining an electromagnet with a permanent special combination. The vacuum arc extinguishing chamber is longitudinally installed in a camp shaped insulation cylinder, which is made of epoxy resin and fired using APG technology. The inner wall of the cylinder has a skirt edge to increase the creepage distance, which can resist creepage and reduce the influence of the surrounding environment. At the same time, in warm and severely polluted environments, it exhibits high resistance to voltage effects and has a mechanical life of 40000 times.

VS1 permanent magnet vacuum circuit breaker

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:42:41

ZN28C-12 is a derivative model of ZN28A-12, which has a handcart structure and can be assembled with KYN1-12 handcart, KYN18-12 handcart, JYN2-12 handcart, JYN3-12 handcart. The circuit breaker and operating mechanism are arranged vertically, and can be configured with CD17 electromagnetic mechanism or CT19 spring mechanism.

[Indoor vacuum circuit breaker]ZN28G-12 series indoor high-voltage vacuum circuit breaker

2026-6-10 19:42:32

Product Overview
1. The ZN28A-12 series indoor AC high-voltage vacuum circuit breaker is mainly used in fixed switchgear, as a protection and control component for electrical equipment in industrial and mining enterprises, power plants, and substations, and is suitable for frequent operation in places.
2. ZN28G-12 is a derivative model of ZN28A-12, which adopts an integrated layout of circuit breaker and operating mechanism in front and back, making installation and use more convenient and stable. It can be directly configured with CD17 electromagnetic mechanism and CT19 spring mechanism.
3. ZN28C-12 is a derivative model of ZN28A-12, which has a handcart structure and can be assembled with KYN1-12 handcart, KYN18-12 handcart, JYN2-12 handcart, JYN3-12 handcart. The circuit breaker and operating mechanism are arranged vertically, and can be configured with CD17 electromagnetic mechanism or CT19 spring mechanism.

ZN28G-12 series indoor high-voltage vacuum circuit breaker models and their meanings

Environmental conditions for use
1. Surrounding air temperature: upper limit+40 ��, lower limit -10 �� (storage and transportation allowed at -30 ��);
2. Relative humidity: daily average not exceeding 95%; Monthly average not exceeding 90%;
Daily average saturated vapor pressure: The daily average is not greater than 2.2KPa, and the monthly average saturated vapor pressure is not greater than 1.8kPa,
3. Altitude: not exceeding 2000m (2500m is considered high prototype);
4. Seismic intensity: not exceeding 8 degrees;
5. A place without fire, explosion hazard, serious pollution, chemical corrosion, and severe vibration.

Main technical parameters of ZN28G-12 series indoor high-voltage vacuum circuit breaker

serial number	project	unit	Parameters
serial number	project	unit	ZN28A-12/630��1000��1250-20	ZN28A-12/630��1250��1600-25	ZN28A-12/630��1250��2500-31.5
one	rated voltage	kV	twelve	twelve	twelve
two	rated current	A	630 1000 1250	630 1250 1600	1250 1600 2000 2500
three	Rated short-circuit breaking current	kA	twenty	twenty-five	thirty-one point five
four	Rated short-circuit closing current (peak)	kA	fifty	sixty-three	eighty
five	Rated withstand current (peak)	kA	fifty	sixty-three	eighty
six	Rated short-time withstand current	kA	twenty	twenty-five	thirty-one point five
seven	Rated short-time duration	s	four	four	four
eight	Rated short-circuit breaking current breaking times	time	fifty	fifty	fifty
nine	Rated operating sequence		Min-0.3s HeFen-180s HeFen
ten	1-minute power frequency withstand voltage (effective value)	kV	forty-two	forty-two	forty-two
eleven	Lightning impulse withstand voltage		seventy-five	seventy-five	seventy-five
twelve	mechanical life	time	ten thousand	ten thousand	ten thousand
thirteen	Contact opening distance	mm	11±1	11±1	11±1
fourteen	Contact itinerary	mm	4±1	4±1	4±1
fifteen	Synchronization of three-phase opening and closing	ms	��2	��2	��2
sixteen	Bouncing time of closing contact	ms	��2	��2	��2
seventeen	Center distance between poles	mm	250±5	250±5	250±5
eighteen	Average opening speed (before contact with oil buffer)	m/s	0.7��1.3	0.7��1.3	0.9��1.3
nineteen	Average closing speed	m/s	0.4��0.8	0.4��0.8	0.4��0.8
twenty	Accumulated allowable wear thickness of dynamic and static contacts	mm	three	three	three

[Indoor vacuum circuit breaker]ZNTW Spring mechanism single-phase circuit breaker

2026-6-10 19:42:24

ZNTW spring mechanism single-phase circuit breaker

[Indoor vacuum circuit breaker]ZNYII-10(6) Type Permanent Magnet High Voltage Vacuum Circuit Breaker

2026-6-10 19:42:15

ZNYII-10 (6) type permanent magnet mechanism high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN3,ZN5-10 type vacuum circuit breaker

2026-6-10 19:42:06

The ZN3. ZN5-10 vacuum circuit breaker is a three-phase AC 50 Hz indoor high-voltage circuit breaker. The circuit breaker body and operating mechanism are connected together and belong to the integral type. The mechanical life has increased from 2000 times for the CD10 mechanism of the original split low oil circuit breaker to 10000 times. The advantage of the integral circuit breaker is that it overcomes the dead zone of the connecting rod existing in the original CD10, improves the reliability of opening, and ensures the safety of equipment and the power grid. The ZN5-10 vacuum circuit breaker has a large breaking capacity and is suitable for frequent operation and situations with many faults

ZN3, ZN5-10 type vacuum circuit breaker

[Indoor vacuum circuit breaker]VBP Type Sealed High Voltage Vacuum Circuit Breaker

2026-6-10 19:41:57

VBP type solid sealed high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]3AE-SION type vacuum circuit breaker

2026-6-10 19:41:48

3AE-SION vacuum circuit breaker is the latest generation product developed and produced by Siemens based on more than 30 years of experience in vacuum product design and operation, targeting the Chinese power market. Incorporating the latest technology from Germany, it represents the latest development direction of vacuum switches. The compact design is suitable for any switch between 7.2-24KV, with maximum electrical parameters of 40KA and 4000A. The modular design simplifies installation, flexible wiring, and optional spacing and pole spacing to meet various special needs. The mechanical and electrical lifespan can reach 30000 times, and under normal operating conditions, maintenance is free within 10000 operation times. The innovative insulation design and the application of new materials have improved the insulation strength

The 3AE-SION vacuum circuit breaker adopts a large creepage insulation design and is equipped with the latest developed large creepage vacuum arc extinguishing chamber, which is more suitable for the technical standards of China's power system and the requirements of full insulation operation conditions. Complete and efficient technical support, and able to provide expert level solutions.

model

Rated voltage (KV)

Rated closing current (KA)

Rated short-circuit breaking current (KA)

Thermal stability time (S)

Rated current (A)

Rated power frequency withstand voltage (KV)

Rated lightning impulse withstand voltage (KV)

Distance (mm)

one hundred and fifty

one hundred and sixty

two hundred and ten

2751��

Polar distance (mm)

two hundred and five

two hundred and seventy-five

three hundred and ten

two hundred and five

two hundred and seventy-five

three hundred and ten

two hundred and five

two hundred and seventy-five

three hundred and ten

3AE

twelve

sixty-three

twenty-five

three

eight hundred

forty-two

seventy-five

one thousand two hundred and fifty

one thousand and six hundred

two thousand

two thousand and five hundred

three thousand one hundred and fifty

40001��

eighty

thirty-one point five

three

eight hundred

one thousand two hundred and fifty

one thousand and six hundred

two thousand

two thousand and five hundred

three thousand one hundred and fifty

40001��

one hundred

forty

three

eight hundred

one thousand two hundred and fifty

one thousand and six hundred

two thousand

two thousand and five hundred

three thousand one hundred and fifty

40001��

Fixed/withdrawable

The entire functional unit

1��

If you have any further requirements, please contact us.

[Indoor vacuum circuit breaker]3AH series vacuum circuit breaker

2026-6-10 19:41:40

The Siemens vacuum circuit breaker 3AH series is a new generation product developed and produced based on years of product design and operation experience, the original 3AF vacuum circuit breaker, and improvements made to meet the insulation requirements of the Chinese power system. The 3AH vacuum circuit breaker is strictly controlled by Shanghai Siemens Switchgear Co., Ltd. in accordance with the requirements of the ISO9002 quality assurance system for the procurement, production, and inspection of raw materials. It adopts first-class component processing and product testing equipment synchronized with Germany, and relies on rich manufacturing experience to locally organize and produce high-tech products. The vacuum arc extinguishing chamber of the circuit breaker is manufactured using one-time sealing technology, and the contact material is Cr Cu alloy, which is melted by arc. The contact adopts advanced design shape and structure, with extremely high arc resistance and very small arc voltage drop. Therefore, while ensuring the rated short-circuit current for breaking, the volume of the arc extinguishing chamber can have the smallest size. Siemens, a new type of vacuum arc extinguishing chamber, also has the characteristic of low cutoff value. Therefore, when the circuit breaker is used to disconnect inductive loads such as transformers, there will be no harmful operating overvoltage. The excellent mechanical characteristics of the vacuum arc extinguishing chamber and spring operation also enable the 3AH vacuum circuit breaker to successfully close and open the capacitor group multiple times without the occurrence of reigning overvoltage. The operating mechanism of the circuit breaker adopts spring energy storage, which can be manually or electrically stored. In this organization, all components are tightly processed and assembled. Moreover, key components and materials are manufactured using special processes. In this way, it ensures that the entire operating mechanism has minimal friction, precise coordination between components, and reliable movement.

Technical parameters of 3AH series vacuum circuit breaker

model	rated voltage	Rated short-circuit closing current	Rated short-circuit breaking current	Thermal stability time	rated current	Rated power frequency withstand voltage (to ground/break)	Rated lightning impulse withstand voltage (to ground/fracture)
	(kV)	(kA)	(kA)	(s)	(A)	(kV)1)	(kV)1)	(mm)
3AH5404-1	12	63	25	4	800	42/48	75/85	210
3AH5404-2	12	63	25	4	1250	42/48	75/85	210
3AH3114-3	12	63	25	4	1600	42/48	75/85	210
3AH3114-4	12	63	25	4	2000	42/48	75/85	210
3AH3114-6	12	63	25	4	2500	42/48	75/85	210
3AH5115-2	12	80	31.5	4	1250	42/48	75/85	210
3AH3115-3	12	80	31.5	4	1600	42/48	75/85	210
3AH3115-4	12	80	31.5	4	2000	42/48	75/85	210
3AH3115-6	12	80	31.5	4	2500	42/48	75/85	210
3AH3116-2	12	110	40	4	1250	42/48	75/85	210
3AH3116-3	12	110	40	4	1600	42/48	75/85	210
3AH3116-4	12	110	40	4	2000	42/48	75/85	210
3AH3116-6	12	110	40	4	2500	42/48	75/85	210
3AH3116-7	12	110	40	4	3150	42/48	75/85	210
3AH3116-8	12	110	40	4	40002)	42/48	75/85	210
3AH3187-2	12	125	50	3	1250	42/48	75/85	210
3AH3187-3	12	125	50	3	1600	42/48	75/85	210
3AH3187-4	12	125	50	3	2000	42/48	75/85	210
3AH3187-6	12	125	50	3	2500	42/48	75/85	210
3AH3187-7	12	125	50	3	3150	42/48	75/85	210
3AH3187-8	12	125	50	3	40002)	42/48	75/85	210
1) If you require higher insulation levels and special distances, please contact us.
2) OEM switchgear forced air cooling.

[Indoor vacuum circuit breaker]3AH2-EP Type Sealed Vacuum Circuit Breaker

2026-6-10 19:41:31

The 3AH2-EP solid sealed vacuum circuit breaker is designed to meet the demand of the Chinese market for high-quality vacuum circuit breakers and easy adaptation to mainstream switchgear experience. Siemens has launched a new generation of 3AH2-EP solid sealed vacuum circuit breakers, which are suitable for use as protection and control appliances in three-phase power systems with a rated voltage of 12KV and a frequency of 50Hz, especially in places with frequent operation. The Siemens 3AH2-EP vacuum circuit breaker adopts a composite insulation method and a solid sealed structure. It is different from insulation covers and insulation cylinder structures. It is a circuit breaker composed of a vacuum arc extinguishing chamber and conductive connection parts sealed with epoxy resin through a special process to form a pole, and Siemens' long-life 3AH2 series mechanism. The Siemens 3AH2-EP vacuum circuit breaker can be used for both central and fixed switchgear, and can be easily interchanged with mainstream circuit breakers in China, with wide compatibility and interchangeability.

Technical parameters of 3AH2-EP solid sealed vacuum circuit breaker

project	unit	data
rated voltage	kV	12
rated frequency	Hz	50
Rated power frequency withstand voltage	kV	42
Rated lightning impulse withstand voltage (peak)	kV	75
rated current	A	Up to 3150
Rated short-circuit breaking current	kA	Up to 40
Rated short-time withstand current (4S)	kA	Up to 40
Rated short-circuit closing current (peak)	kA	Up to 100
Rated peak withstand current (peak value)	kA	Up to 100
Electrical lifespan	time	274 (E2 level)
Rated operation sequence automatic reclosing		O-0.3s-CO-180s-CO
mechanical life	time	30,000*
Secondary circuit power frequency withstand voltage (1min)	V	2,000
Meeting center distance	mm	��1600A 210 ± 1.5 2000~3150A 275 ± 1.5
Closing and opening different periods	ms	�� 2
Closing bounce time	ms	�� 2
closing time	ms	<75
Opening time	ms	<65

[Indoor vacuum circuit breaker]3AH Vacuum generator outlet circuit breaker

2026-6-10 19:41:22

The 3AH high current generator outlet vacuum circuit breaker has become a standard for up to 4500 amperes in numerous electro-optical applications around the world. Among them, 3AH is the world's first 63KA and 72KA vacuum circuit breakers that have completed type tests strictly in accordance with the generator outlet circuit breaker standard IEEE C37.013. With continuous research, experimentation, and development in the field of vacuum technology, the product range has been expanded to a rated current of 6300A and a short-circuit breaking current of 72KA.

model	Rated voltage (KV)	Rated closing current (KA)	Rated short-circuit breaking current	Thermal stability time (S)	Rated current (A)	Rated power frequency withstand voltage (KV)	Rated lightning impulse withstand voltage (KV)	Center to center distance (mm)
3AH3	seventeen point five	one hundred and thirty-seven	fifty	three	three thousand one hundred and fifty	42/50(2)	95/110(2)	210/275(2)
3AH3	seventeen point five	one hundred and thirty-seven	fifty	three	4000(1)	42/50(2)	95/110(2)	two hundred and seventy-five
3AH3	seventeen point five	one hundred and thirty-seven	fifty	three	five thousand	fifty	one hundred and ten	three hundred
3AH3	seventeen point five	one hundred and thirty-seven	fifty	three	six thousand and three hundred	fifty	one hundred and ten	three hundred
3AH3	seventeen point five	160/173(2)	sixty-three	three	three thousand one hundred and fifty	42/50(2)	95/110(2)	two hundred and seventy-five
3AH3	seventeen point five	160/173(2)	sixty-three	three	4000(1)	42/50(2)	95/110(2)	two hundred and seventy-five
3AH3	seventeen point five	one hundred and seventy-three	sixty-three	three	five thousand	fifty	one hundred and ten	three hundred
3AH3	seventeen point five	one hundred and seventy-three	sixty-three	three	six thousand and three hundred	fifty	one hundred and ten	three hundred
3AH3	seventeen point five	one hundred and ninety-eight	seventy-two	three	three thousand one hundred and fifty	fifty	one hundred and ten	two hundred and seventy-five
3AH3	seventeen point five	one hundred and ninety-eight	seventy-two	three	4000(1)	fifty	one hundred and ten	two hundred and seventy-five
3AH3	seventeen point five	one hundred and ninety-eight	seventy-two	three	five thousand	fifty	one hundred and ten	three hundred
3AH3	seventeen point five	one hundred and ninety-eight	seventy-two	three	six thousand and three hundred	fifty	one hundred and ten	three hundred
(1) Can provide circuit breakers with a rated current of 4500A
(2) We can provide corresponding specifications of products according to different technical parameter requirements

3AH vacuum generator outlet circuit breaker

[Indoor vacuum circuit breaker]CVS Sealed pole vacuum circuit breaker

2026-6-10 19:41:14

1�� Significant features:
CVSl vacuum circuit breaker is equipped with CG68 spring mechanism or CG69 permanent magnet mechanism, which is an independent integral mechanism
Simple structure with few components,
Compact structure, small volume, and light weight;
Fully functional and highly reliable,
The distribution of operation buttons and status indicators is neat and centralized;
Easy maintenance:
During maintenance, the entire mechanism can be replaced and repaired,
Parts can also be replaced and repaired on the circuit breaker.

2�� The latest SIEMENS vacuum arc extinguishing chamber technology
Low cut-off value, low contact resistance,
High mechanical and electrical lifespan, with minimal contact wear during the lifespan
Longitudinal magnetic field contact

3�� Sealed main circuit
The vacuum arc extinguishing chamber is vertically sealed inside an insulating cylinder to prevent damage to the 1G vacuum extinguishing chamber caused by external factors
Flexible sealing materials can reduce the impact of circuit breaker operation vibration on vacuum arc extinguishing chambers
Effectively blocking the creepage on the surface of the vacuum extinguishing chamber, reducing its volume.

4�� Coordination between operating mechanism and vacuum arc extinguishing chamber
Using PRO-E kinetic analysis and calculation, verified through experiments. With this cooperation, the contact burns are minimal
Compact structural design
The circuit breaker has few components, a reasonable and compact structural layout, and the coordination between the operating mechanism and the vacuum arc extinguishing chamber

5�� CVS solid sealed pole vacuum circuit breaker has a wide range of applications
The circuit breaker can be applied to various mid mounted removable switchgear such as KVN28 and KYN79, and can also be fixedly installed.

6�� Range of CVS solid sealed pole vacuum circuit breaker

Rated maggot circuit breaking current	Rated short-circuit opening and closing current	rated current	12kV	12kV (4000M)	24kV
25kA	63kA	630��1250A	CVSl	CVSl	CVSl
		1600A	CVSl	CVSl	CVSl
		1250A	CVSl	CVSl	CVSl
31��5kA	100kA	1600A	CVSl	CVSl	CVSl
31��5kA	100kA	2000A	CVSl	CVSl	CVSl
		1250-2000A	CVSl	CVSl	CVSl
40kA	130kA	2500 to 3150A	CVSl	CVSl	CVSl
40kA	130kA	1600 to 2500A	CV51	CVSl	CVSl
50kA	130kA	1250 to 4000A	CVSl	CVSl	CVSl

7�� Selection table for bundled contacts

Rated current (A)

six hundred and thirty

one thousand two hundred and fifty

630-2000

1600 to 2000

2500��3150

1250-4000

Rated short-circuit breaking

Current (kA)

20��21

20��25

31��5

31��5��40

ten

Static contact diameter (mm)

Ø3

Ø49

Ø79

Ø109

8�� Technical data
Main technical parameters table of circuit breaker

serial number	Name		unit	Numerical value
l	rated voltage		kV	twelve
	Rated Absolute	LMIN32 frequency withstand voltage	kV	forty-two
two	Edge level	Impulse withstand voltage (peak value)		seventy-five
three	rated current		A	six hundred and thirty	one thousand two hundred and fifty		one thousand and six hundred	two thousand	one thousand two hundred and fifty �� two thousand		two thousand and five hundred �� three thousand one hundred and fifty
four	Rated short-circuit breaking current			twenty-five	31��5				forty
five	Rated short-circuit closing current (peak)			eighty	80(100)				100(130)
six	Rated peak withstand current		kA	eighty	80(100)				100(130)
seven	Rated short-time withstand current			twenty-five	31��5				forty
eight	Electrical lifespan		time	thirty
nine	Rated short-circuit current duration		S	four
ten	Rated operating sequence			Split -0.3s - Split -180s - Split - Split
eleven	mechanical life		time	twenty thousand		twenty thousand				twenty thousand
twelve	Rated breaking current of a single capacitor bank		A	six hundred and thirty
thirteen	Rated back-to-back capacitor bank breaking current		A	four hundred

Note: In parentheses, to increase the closing current value, the user's special request is to provide
CVS1-12/T630-25��CVS1-12/T1250-31.5,CVS1-12/T1600-31.5
Mechanical characteristic parameter table

serial number	Name		unit	Numerical value
one	Contact opening distance			eight^+0.5_-1.5
two	Contact itinerary		mm	3��5±0��5
three	Center distance between phases			170±1��5 210±1��5
four	Bouncing time of closing contact			��2
five	Three phase asynchronous disconnection			��2
six	Opening time	highest
	When the operating voltage is	rated		30-50
		minimum
seven	closing time		ms	35-75
eight	Opening speed (just 5mm)		m/s	1��4±0��2
nine	Average opening speed (5mm before closing)			0��8±O��2

CVS1-12/T2000-31.5��CVS1-12/T1250-40��CVS1-12/T3150-40
Mechanical characteristic parameter table

serial number	Name		unit	Apply value
one	Contact opening distance			10±1
two	Contact itinerary		mm	3±O��1
three	Center distance between phases			275±1��5
four	Bouncing time of closing contact			��2
five	Three phase asynchronous disconnection			��2
		highest
six	Opening time When the operating voltage is	rated		30-65
		minimum
seven	closing time		ms	35-75
eight	Opening speed (just 5mm)		m��s	1.4±0.2
nine	Average opening speed (5mm before closing)			0.8±0.2

energy storage motor

rated voltage

(V)

Huding input power

(W)

Normal operating voltage range

(V)

Energy storage time

(S)

DC220��DCll0

seventy-five

85% -110% rated voltage

��15

*The operating voltage allows the use of AC and DC power sources.

Opening and closing coil

	closing coil		trip coil
Rated operating voltage (Y)	AC220��DC220	ACll0��DCll0	AC220��DC220	ACll0��DCll0
Coil current (A)	one point four five	two point two	one point four five	two point two
Normal operating voltage range	85% to 110% rated voltage		65% to 120% rated voltage

[Indoor vacuum circuit breaker]ZN-10C series indoor handcart type high-voltage vacuum circuit breaker

2026-6-10 19:41:05

The ZN-10C series indoor handcart type high-voltage vacuum circuit breaker is a high-voltage indoor switchgear with a rated voltage of 10KV three-phase slurry 50HZ. It is widely used in mining enterprises, power plants, and substations as a protection and control device for high-voltage electrical equipment, especially suitable for breaking heavy loads and frequent operations.
This series of circuit breaker operating mechanisms can be equipped with CD10, CD17 electromagnetic operating mechanisms or CT8, CT17, CT19 spring operating mechanisms, and comply with relevant standards such as IEC-56 and GB1984-89 �� AC high-voltage circuit breaker ��.

Normal usage conditions
The altitude should not exceed 1000m;
The upper limit of ambient temperature is+40 ��, and the lower limit is -25 ��;
Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%
The surrounding air should not be significantly polluted by corrosive or combustible gases, water vapor, etc;
There is no frequent severe vibration.

structural characteristics
The ZN-10C series indoor handcart type high voltage vacuum circuit breaker is a handcart driver type structure that can directly enter the KYNI-10 or JYN2-10 handcart cabinet. Handcarts of the same specifications are completely interchangeable. The handcart has a reliable locking device, and the entry and exit of the cabinet are driven by a worm gear mechanism.

Main technical parameters

name		unit	data
rated voltage	KV		ten
maximum voltage	KV		eleven point five
rated current	A		630 1250 1600 2000 3150
Rated breaking current	KA		20 31.5 40
Rated closing current (peak value)	KA		50 80 100
Thermal stability current	KA/S		20/4 31.54 40/4
closing time	s		<0.15
Opening time	S		<0.16
Rated short-circuit breaking times	time		thirty
Rated operating cycle			Fen-0.3 HeFen-180S HeFen
One minute public frequency withstand voltage (effective value)	KV		forty-two
Rated current breaking times	time		one thousand
mechanical life	time		one thousand

ZN-10C series indoor handcart type high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN63S-12(VS1+) Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:40:56

The ZN63S-12 (VS1+) indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor high-voltage switchgear with a rated voltage of 7.2-12 kV. As a protection and control unit for power grid equipment and power equipment in industrial and mining enterprises.

The circuit breaker complies with China's national standards GB1984-89 "AC High Voltage Circuit Breaker", JB3855-96 "3.6-40.5kV Indoor AC High Voltage Vacuum Circuit Breaker", DL403-91 "Technical Conditions for Ordering 10-35kV Indoor High Voltage Vacuum Circuit Breaker" and relevant IEC standards, and has reliable interlocking function.

The ZN63S-12 (VS1+) indoor high-voltage vacuum circuit breaker can perform frequent operations and has the ability to open and close multiple times and quickly reclose.
The ZN63S-12 (VS1+) indoor high-voltage vacuum circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit or assembled with the chassis to form a handcart unit for use.

Normal operating conditions of ZN63S-12 (VS1+) indoor high-voltage vacuum circuit breaker
a. Altitude: not exceeding 1000m
b. Environmental temperature
Maximum temperature:+40 ��
Minimum temperature: -15 �� (storage and transportation allowed at -30 ��)
c. Environmental humidity
Daily average relative humidity: �� 95%
Monthly average relative humidity: �� 90%
Daily average saturated vapor pressure: �� 2.2 × 10-3 MPa
Monthly average saturated vapor pressure: �� 1.8 × 10-3 MPa
d. A place without fire or explosion hazards, severe pollution, chemical corrosion, and severe vibration.
If there are special usage conditions, please inform and negotiate with the manufacturer when placing an order.

Model and meaning of ZN63S-12 (VS1+) indoor high-voltage vacuum circuit breaker

Technical data

1. Main technical parameters of circuit breaker

serial number	project	unit	Numerical value
one	rated voltage	kV	twelve
two	rated frequency	Hz	fifty
three	Rated lightning impulse withstand voltage (peak)	kV	seventy-five
four	Rated short-time power frequency withstand voltage (1min)	kV	forty-two
five	Rated short-circuit breaking current	kA	twenty	twenty-five	thirty-one point five	forty
six	rated current	A	six hundred and thirty	six hundred and thirty	one thousand two hundred and fifty	one thousand two hundred and fifty
			one thousand two hundred and fifty	one thousand two hundred and fifty	one thousand and six hundred	one thousand and six hundred
					two thousand	two thousand
					two thousand and five hundred	two thousand and five hundred
						three thousand one hundred and fifty
seven	Rated short-time withstand current (effective period)	kA	twenty	twenty-five	thirty-one point five	forty
eight	Rated peak withstand current (peak)	kA	fifty	sixty-three	eighty	one hundred
nine	Rated short-circuit closing current (peak)	kA	fifty	sixty-three	eighty	one hundred
ten	Rated short-circuit current duration	s	four
eleven	mechanical life	time	thirty thousand			ten thousand
twelve	Secondary circuit power frequency withstand voltage (1min)	V	two thousand
thirteen	Rated operating sequence	O-t-CO-t^one-CO

Note: 20kA, 25kA, 31.5kA t=0.3s t^one=180s 40kA t=180s��t1=180s

2. Mechanical characteristic parameters of circuit breaker

serial number	project	unit	Numerical value
one	Contact opening distance	mm	9±1
two	Contact itinerary	mm	3±0.5
three	Contact closing bounce time	ms	��2(40kA��3)
four	Three phase asynchronous opening and closing	ms	��2
five	Average opening speed	m/s	1.1±0.2
six	Average closing speed	m/s	0.6±0.2
seven	Opening time (rated voltage)	ms	��50
eight	Closing time (rated voltage)	ms	��100
nine	Rated closing and opening operating voltage	V	AC110/220 DC110/220
ten	Rated voltage of energy storage motor	V	AC110/220 DC110/220
eleven	Rated power of energy storage motor	W	70(40kA 100W)
twelve	Energy storage time	s	ten
thirteen	Accumulated allowable wear thickness of dynamic and static contacts	mm	three
fourteen	Main electrical circuit resistance	630A-1250A	��45
		1600-2000A	��35
		2500-3150A	��25
fifteen	Contact pressure of closing contact	20kA-25kA	2000N-2500N
		31.5kA	3000N-3500N
		10kA	4500N-5000N

Product structure and working principle
1. Overall structure of circuit breaker
ZN63S-12(VS1⁺��The overall structure of the indoor high-voltage vacuum circuit breaker adopts the form of operating mechanism and arc extinguishing chamber arranged in front and behind, and the main electrical circuit part is a three-phase floor standing structure. The upper and lower outlet bases and arc extinguishing chambers are installed in a tubular insulation cylinder made of epoxy resin cast using APG technology, which is particularly resistant to creeping electricity. This structural design makes it difficult for dust to accumulate on the surface of the arc extinguishing chamber, which not only prevents the vacuum arc extinguishing chamber from being damaged by external factors but also ensures that it can exhibit high resistance to voltage effects even in humid, hot, and severely polluted environments.

2. Operating mechanism structure
ZN63S-12(VS1⁺��The indoor high-voltage vacuum circuit breaker is equipped with a new SS1 spring operated mechanism, which has manual and electric energy storage functions, a concise structure, and high reliability. The operating mechanism is placed inside the chassis in front of the arc extinguishing chamber, and the chassis of the circuit breaker is also used as the framework for the operating mechanism. ZN63S-12(VS1+��The indoor high-voltage vacuum circuit breaker integrates the vacuum arc extinguishing chamber and the operating mechanism into a unified whole, making the operating performance of the operating mechanism more in line with the required performance of the arc extinguishing chamber opening and closing, reducing unnecessary intermediate links, lowering energy consumption, and making ZN63S-12 (VS1⁺��The performance of indoor high-voltage vacuum circuit breakers is more reliable. ZN63S-12(VS1⁺��The indoor high-voltage vacuum circuit breaker can be installed in both mobile switchgear and fixed switchgear.

3. Arc extinguishing principle
The vacuum arc chamber used in the circuit breaker has a very high vacuum degree. When the moving and stationary contacts are energized and disconnected under the action of the operating mechanism, an arc will be generated at the contact tip. At the same time, an appropriate longitudinal magnetic field will be generated in the contact gap to maintain the diffusion type of vacuum arc, and evenly distribute the arc on the contact surface for combustion, while maintaining a low arc voltage. When the current naturally crosses zero, residual ions, electrons, and metal vapor can recombine or accumulate on the contact surface and screen cover in a subtle amount of time. The dielectric insulation strength of the arc extinguishing chamber fracture quickly recovers, thereby extinguishing the arc and achieving the purpose of breaking. Due to the use of longitudinal magnetic field vacuum arc extinguishing chamber in vacuum circuit breakers. Therefore, it has a strong and stable ability to interrupt current.

4. Anti misoperation interlock
Circuit breakers can provide comprehensive and reliable anti misoperation functions.
a. After the circuit breaker is closed, it cannot be closed again before the circuit breaker is opened;
b. After the circuit breaker is closed, if the closing electrical signal is not removed in time, the internal anti bounce control circuit of the circuit breaker will cut off the closing circuit to prevent multiple reclosing;
c. When the handcart circuit breaker is not in the test position or working position, the circuit breaker cannot be closed to prevent it from entering the load zone in the closed state;
d. After the handcart circuit breaker is closed in the working or testing position, the handcart cannot move to prevent pulling out or pushing the load area in the closed state;
e. The circuit breaker can be configured with a closing lock according to user needs to prevent manual closing operations when the secondary control power supply is not connected.

Operation and Maintenance
Pre-installation check
a. After opening the circuit breaker, it should be checked for any damage, whether the product nameplate and certificate of conformity match the purchase order, and whether they are in good condition before cleaning the surface dust, especially the insulation surface;
b. Operate the circuit breaker manually according to the regulations for energy storage, closing, and opening, and pay attention to observing whether the relevant instructions are correct;
c. Use the operating power supply to operate the circuit breaker for energy storage, closing and opening, and pay attention to observing whether the relevant instructions are correct;
d. Conduct power frequency withstand voltage insulation test;
e. During formal operation, please remove the dust protection cover as required for rated currents of 1600A and above;
f. Insert the dedicated push handle into the push hole, shake clockwise to advance, and counterclockwise to exit. The total stroke is 200mm. In the open state, shake the handle evenly to reach the working position or test position, and at the same time, the corresponding indicator light of the cabinet will light up. Do not use excessive force to damage the interlocking mechanism and position signal.

[Indoor vacuum circuit breaker]VSM series high-voltage vacuum circuit breaker

2026-6-10 19:40:48

VSM series high-voltage vacuum circuit breaker

1. Scope of use
The ZN63A-12 (VS1-12) series indoor high-voltage vacuum circuit breaker is a three-phase AC 50HZ indoor high-voltage distribution device with a rated voltage of 12KV or below. Can be matched with KYN28-12 (Z) (GZS1) switchgear. Suitable for control and protection of transmission and distribution systems such as power plants and substations, especially in places with frequent operations.

The operating mechanism of the VSM series high-voltage vacuum circuit breaker is a spring energy storage type, which can be used for AC or DC operation and can be used for manual operation.

2. Usage conditions
a) Altitude: not exceeding 1000m;
b) Surrounding air temperature: maximum+40oC, minimum -10oC;
c) Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
d) Water vapor pressure: daily average not exceeding 2.2kPa, monthly average not exceeding 1.8kPa;
e) Places without fire, explosion, severe pollution, chemical corrosion, and severe vibration;

3. Advantages of permanent magnets
·Low number of components and high reliability
·Long lifespan, reaching over 50000 cycles
·The main circuit adopts advanced fixed sealing poles, which have stronger anti pollution ability and are more suitable for harsh environments
·The perfect combination of permanent magnet mechanism and circuit breaker greatly improves the electrical performance of the circuit breaker. Even for high current 40kA/4000A short-circuit breaking, the automatic reclosing operation sequence test passed completely
·Double coil bistable structure, electromagnetic operation, permanent magnet retention
·Low power consumption of opening and closing coils
·No energy storage capacitor
·Maintenance free

[Indoor vacuum circuit breaker]VS1+ series indoor high-voltage vacuum circuit breaker

2026-6-10 19:40:39

The VS1-12 indoor high-voltage vacuum circuit breaker is an indoor switchgear for three-phase AC 50Hz rated voltage 12kV power systems. It serves as a protection and control unit for power grid equipment and industrial and mining enterprise power equipment. Suitable for frequent operation at rated working current, or places where short-circuit current is broken multiple times.
The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit or equipped with a dedicated propulsion mechanism to form a handcart unit.

VS1+series indoor high-voltage vacuum circuit breaker operating environment

Surrounding air temperature: upper limit+40 ��, lower limit -15 ��;
B Altitude: �� 100m (if altitude needs to be increased, the rated insulation level will be correspondingly increased);
C amplitude: earthquake magnitude does not exceed 8 degrees;
The daily average relative humidity of the air is not greater than 95%, and the monthly average is not greater than 90%
A place without fire, explosion hazards, serious pollution, chemical corrosion, and severe vibration.

Main technical parameters of VS1+series indoor high-voltage vacuum circuit breaker

serial number	name		name	data
one	rated voltage		kV	twelve
two	rated frequency		Hz	fifty
three	Rated insulation level	1-minute power frequency withstand voltage	kv	Ground/phase 42/48
		Lightning impulse withstand voltage (peak value)		Ground/phase to phase 75/85
four	Rated short-circuit breaking current		kA	twenty	twenty-five	thirty-one point five	forty
five	rated current		A	six hundred and thirty	six hundred and thirty	1250 1600	1250 1600
				one thousand two hundred and fifty	one thousand two hundred and fifty	2000 2500	2000 2500
six	Rated short-time withstand current (effective value)		kA	twenty	twenty-five	thirty-one point five	forty
seven	Rated peak withstand current (peak)			fifty	sixty-three	eighty	one hundred
eight	Rated short-circuit closing current (peak)			fifty	sixty-three	eighty	one hundred
nine	Rated short-circuit current duration		S	four
ten	mechanical life		time	twenty thousand
eleven	Secondary circuit power frequency withstand voltage (1min)		V	two thousand
twelve	Rated operating sequence			Division-t-and-t1-in-for-t1
Note: 20kA, 25kA, 31.5kA t=0.3s t1=180s; 40kA t=180s t1=180s

VS1+series indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZK1-630 type vacuum circuit breaker

2026-6-10 19:40:29

ZK1-630 vacuum circuit breaker is suitable for industrial and mining enterprises, power plants, substations, and frequent operations with AC 50HZ, rated voltage up to 1140KV, and rated current up to 630A. Mainly used for the protection and control of electrical equipment.
The contact belongs to the vacuum medium, therefore, it has small volume, high pressure resistance, high breaking capacity, long service life, and does not require maintenance. Especially due to its advantages of not exposing the arc and being safe and reliable, it is widely used in industrial sectors such as coal, power, chemical, metallurgy, and petroleum.

Technical parameters of ZK1-630 vacuum circuit breaker
Rated working voltage 1140V
Rated working current 630A
Rated short-circuit breaking current 12.5KA
Rated short-circuit breaking frequency 16 times
Rated current breaking frequency 3000 times
Mechanical lifespan of 15000 cycles
Rated short-time withstand current 12.5KA
Rated short-time withstand time 4S
Rated power frequency withstand voltage 10KV
Rated opening torque 4 ± 0.4mm, contact self closing force 115 ± 11N
Contact reaction force at rated opening moment 140 ± 14N
Contact resistance under rated contact pressure �� 100 ��

Outline dimensions and installation dimensions of ZK1-630 vacuum circuit breaker

ZK1-630 vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN20-500 type vacuum circuit breaker

2026-6-10 19:40:20

The ZN20-500 vacuum circuit breaker is suitable for industrial and mining enterprises, power plants, substations, and frequent operations with AC 50HZ, rated voltage up to 1140KV, and rated current up to 500A. Mainly used for the protection and control of electrical equipment.
The contact belongs to the vacuum medium, therefore, it has small volume, high pressure resistance, high breaking capacity, long service life, and does not require maintenance. Especially due to its advantages of not exposing the arc and being safe and reliable, it is widely used in industrial sectors such as coal, power, chemical, metallurgy, and petroleum.

Technical parameters of ZN20-500 vacuum circuit breaker
Rated working voltage 1140V
Rated working current 500A
Rated short-circuit breaking current 9KA
Rated short-circuit breaking frequency 16 times
Rated current breaking frequency 3000 times
Mechanical lifespan of 15000 cycles
Rated short-time withstand current 9KA
Rated short-time withstand time 4S
Rated power frequency withstand voltage 10KV
Rated opening torque 4 ± 0.4mm
Contact self closing force 100 ± 10N
Contact reaction force at rated opening moment 140 ± 14N
Contact resistance under rated contact pressure �� 100 ��

External dimensions and installation dimensions:

ZN20-500 vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN7-400 type low-voltage vacuum circuit breaker

2026-6-10 19:40:12

The ZN7-400 vacuum circuit breaker is suitable for industrial and mining enterprises, power plants, substations, and frequent operations with AC 50HZ, rated voltage up to 1140KV, and rated current up to 400A. Mainly used for the protection and control of electrical equipment.
The contact belongs to the vacuum medium, therefore, it has small volume, high pressure resistance, high breaking capacity, long service life, and does not require maintenance. Especially due to its advantages of not exposing the arc and being safe and reliable, it is widely used in industrial sectors such as coal, power, chemical, metallurgy, and petroleum.

Technical parameters of ZN7-400 low-voltage vacuum circuit breaker
Rated working voltage 1140V
Rated working current 400A
Rated short-circuit breaking current 8KA
Rated short-circuit breaking frequency 16 times
Rated current breaking frequency 3000 times
Mechanical lifespan of 20000 cycles
Rated short-time withstand current 8KA
Rated short-time withstand time 4S
Rated power frequency withstand voltage 10KV
Rated opening torque 4 ± 0.4mm
Contact self closing force 100 ± 10N
Contact reaction force at rated opening moment 140 ± 14N
Contact resistance under rated contact pressure �� 100 ��

Dimensions and installation dimensions of ZN7-400 low-voltage vacuum circuit breaker:

ZN7-400 Low Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]Indoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:40:03

The ZN73D-12 indoor AC high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is a three-phase AC 50Hz indoor high-voltage switchgear with a rated voltage of 7.2-12kV. The circuit breaker complies with China's national standards GB/T1984 "High Voltage AC Circuit Breakers", JB3855 "3.6-40.5kV Indoor AC High Voltage Vacuum Circuit Breakers" and relevant IEC standards, and has reliable interlocking

Function.
Circuit breakers can perform frequent operations and have the ability to open and close multiple times and quickly reclose.
The circuit breaker is designed as a front and rear split structure, which can be used as a fixed installation unit or as a separate handcart with the chassis.
Product features: 1 Integrated structure;
2. Enclosed installation of arc extinguishing chamber;
3. High performance vacuum arc extinguishing;
4. Good mechanical properties;
5. Flexible and diverse installation forms.

[Indoor vacuum circuit breaker]ZN85-40.5/600-31.5 Miniature Circuit Breaker

2026-6-10 19:39:54

ZN85-40.5/600-31.5 miniature circuit breaker is suitable for three-phase power systems with AC 50Hz of 40.5kV and below. It is used for opening and closing load current, overload current, and short-circuit current, and is particularly suitable for places with frequent operation. It has the function of multiple disconnections and rapid reclosing. Circuit breakers and propulsion mechanisms are equipped as separate handcarts and KYN61 withdrawable switchgear.

ZN85-40.5/600-31.5 Miniature Circuit Breaker Performance Characteristics:
Operating mechanism: The spring operating mechanism is assembled separately with the switch and has manual and electric closing and opening functions. The mechanism is equipped with a trip device, operation frequency recorder, energy storage indicator device, and opening/closing indicator device, and can also be equipped with anti jumping devices. Removable handcart structure: The circuit breaker moving propulsion mechanism is installed on the circuit breaker housing, and there is a reliable action interlock between it and the circuit breaker. Through it, the circuit breaker frame and cabinet are reliably grounded.

[Indoor vacuum circuit breaker]ZN73 series indoor AC high-voltage vacuum circuit breaker

2026-6-10 19:39:46

The ZN73-12 indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is a three-phase AC 50Hz indoor device with a rated voltage of 12kV. It is suitable for switching various types of loads and frequent operations, and can be used for the protection and control of industrial and mining, enterprise, power plant equipment, and substation electrical facilities.
The circuit breaker complies with the 1984 and JB3855 standards.

Normal working conditions
1. Surrounding air temperature: upper limit not exceeding+40 ��; The lower limit shall not be lower than -10 ��.
2. Altitude: The altitude shall not exceed 1000m.
3. Humidity: Relative humidity: Daily average not exceeding 95%, monthly average not exceeding 90%; Saturated vapor pressure: The daily average value shall not exceed 2.2 × 10-3Mpa, and the monthly average value shall not exceed 1.8 × 10-3Mpa. During periods of high humidity, condensation may occur when the temperature drops sharply.
4. Seismic intensity: The seismic intensity shall not exceed 8 degrees.
5. The surrounding air should not be significantly polluted by corrosive or flammable gases, water vapor, etc.
6. There is no frequent severe vibration in the place of use.
Note: If users need circuit breakers that exceed the normal usage conditions mentioned above, they can negotiate with our company to customize them.

Meaning and Classification of ZN73 Series Indoor AC High Voltage Vacuum Circuit Breaker Models

Main technical parameters of ZN73 series indoor AC high-voltage vacuum circuit breaker

The mechanical characteristic parameters of the circuit breaker are shown in Table 2.

KO internal anti bounce relay Y1 locking electromagnet (optional) DO diode
HQ closing release R0, R1 current limiting resistor TQ opening release
Y4- Low voltage release (optional) M-energy storage motor with spring operated mechanism
Y7~Y9- Indirect overcurrent release (optional) S2- Auxiliary switch for locking electromagnet (optional) V0~V4- Rectification element S1- Micro switch for energy storage
P-Manual Operating Mechanism QF - Auxiliary Switch for Main Contact of Circuit Breaker

Internal anti bounce relay HQ closing release of KO organization
DO diode TQ circuit breaker
R0, R1- current limiting resistor M-spring operated energy storage motor
Y4- Low voltage release (optional) S9- Auxiliary switch for working position
Y7~Y9- Indirect overcurrent release (optional) S8- Auxiliary switch for test position
V0~V4- rectifier component S2- auxiliary switch for locking electromagnet (optional)
P-Manual operating mechanism S1 Micro switch for energy storage
Y1 locking electromagnet (optional) QF auxiliary switch for circuit breaker main contact

Figure 2 Internal wiring diagram of handcart circuit breaker
Appearance and installation dimensions

Note: The numbers in parentheses indicate the size of circuit breakers with a rated current greater than 1600A.
Figure 1: Outline, Installation, and Dimensional Diagram of Fixed Circuit Breaker

Note: 1. The travel distance of the handcart in the cabinet is 200mm;
2. The numbers in parentheses indicate the external dimensions of circuit breakers with a rated current greater than or equal to 1600A.

[Indoor vacuum circuit breaker]ZN��-12 Indoor mounted AC high-voltage vacuum circuit breaker

2026-6-10 19:39:37

ZN �� -12 indoor mounted AC high voltage vacuum circuit breaker is an indoor high voltage switchgear suitable for use in three-phase power systems with a rated voltage of 12kV and a frequency of 50Hz. It is used as a protective and control electrical device. Due to the special advantages of vacuum circuit breakers, it is particularly suitable for frequent operations under rated current or multiple short circuit current disconnections.
The ZN �� -12 indoor mounted AC high-voltage vacuum circuit breaker adopts a fixed installation, mainly used for fixed switchgear. This circuit breaker can be used alone or for ring network power supply, box type transformers, or various non-standard power supply systems.

ZN �� -12 Indoor AC High Voltage Vacuum Circuit Breaker Product Features:
The arc extinguishing chamber can be installed in ordinary insulation tubes or sealed in epoxy resin using APG technology. This circuit breaker has the characteristics of small size, beautiful appearance, reliable performance, and high mechanical life.

[Indoor vacuum circuit breaker]ZN65A-12 series indoor high-voltage vacuum circuit breaker

2026-6-10 19:39:28

The ZN65A-12 vacuum circuit breaker is a new generation vacuum circuit breaker developed and researched based on the latest technology at home and abroad. The circuit breaker has a simple structure, stable operation, reliability, and easy maintenance. The operating mechanism is a spring energy storage type, which meets the technical and mechanical characteristic parameters of various vacuum arc extinguishing chambers at home and abroad.

This circuit breaker can be used not only for general protection equipment in power plants and transmission and distribution systems, but also for control and protection of small generator exports, electric furnace steelmaking and other equipment. Its performance is at the leading level in China, reaching the highest level of similar products in the late 1990s.

ZN65A-12 series indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]BVS1-12 series vacuum circuit breaker

2026-6-10 19:39:20

The BVS1-12 series vacuum circuit breaker is a type of circuit breaker specifically designed for use with GZS1 central cabinets. It is an indoor high-voltage distribution device with a three-phase AC frequency of 50Hz and a rated voltage of 12kV or below. Can be matched with KYN28A-12 (GZS1) switchgear. Suitable for control and protection of transmission and distribution systems such as power plants and substations, especially in places with frequent operations.

The operating mechanism of BVS1-12 series vacuum circuit breaker is spring energy storage type, which can be operated by AC or DC, or manually operated.

[Indoor vacuum circuit breaker]BV1-12 type vacuum circuit breaker

2026-6-10 19:39:11

BV1-12 vacuum circuit breaker is a new product developed by Shanghai Baolin Chaoya Electric Co., Ltd. according to market requirements. Its prominent feature is the organic combination of ZN65A-12 vacuum circuit breaker and ZN63A-12 vacuum circuit breaker. Through a unique structural design, the operating mechanism performance of Siemens 3AH is integrated with ABB's VD4 body structure, which is suitable for the needs of the Chinese market. The operating life is designed to be 30000 times, making it an alternative product to VD4. At the same time, it can be interchanged with domestic VS1 (ZN63A-12) vacuum circuit breaker. It can be used as a fixed installation unit or as a mid mounted circuit breaker to match KYN28A (GZS1) switchgear.

BV1-12 vacuum circuit breaker is an indoor switchgear used in 12kV power systems. As a protection and control unit for power equipment in industrial and mining enterprises, the circuit breaker is simple, stable and reliable in operation, and easy to maintain; Large climbing distance, strong anti fouling ability, sufficient insulation strength, suitable for use in high-altitude areas.

[Indoor vacuum circuit breaker]ZN22B-12/1250-31.5 Indoor High Voltage Vacuum Circuit Breaker

2026-6-10 19:39:02

Overview
The ZN22B-12/1250-31.5 vacuum circuit breaker is an indoor high-voltage switchgear with a rated voltage of 12kV and three-phase AC 50Hz. This circuit breaker is designed with reference to the most advanced vacuum switch technology abroad, using a new and reliable spring energy storage control mechanism, combined with a domestically produced first-class "central arc ignition" and longitudinal magnetic field structure vacuum arc extinguishing chamber. The product is increasingly valued and welcomed by the market for its superior vacuum switch function and low sales price. Siemens VS12040PR and VS17005PR vacuum arc extinguishing chambers can also be used to improve the technical performance of the products.

Scope of application
This circuit breaker has a simple structure, high technical parameters, strong breaking capacity, complete operating functions, reliable action, stable performance, long service life, easy maintenance, and no explosion hazard or pollution. It is suitable for use as a control or protection switch and opening and closing container group in power plants, substations and other transmission and distribution systems, especially for breaking important loads and frequent operations.

Main technical parameters of ZN22B-12/1250-31.5 indoor high-voltage vacuum circuit breaker

program	name	parameter	unit	program	name	parameter	unit
one	rated voltage	twelve	kV	thirteen	mechanical life	ten thousand	time
two	rated current	one thousand two hundred and fifty	A	fourteen	Rated current breaking times	ten thousand	time
three	Rated short-circuit breaking current	thirty-one point five	kA	fifteen	Rated power of energy storage motor	two hundred and seventy-five	W
four	Dynamic stability current (peak value)	eighty	kA	sixteen	Rated voltage of energy storage motor	110��220	V
five	Thermal stability current (4s)	thirty-one point five	kA	seventeen	Energy storage time	��15	A
six	Rated short-circuit closing current (peak)	eighty	kA	eighteen	Rated voltage of closing electromagnet	110��220	V
seven	Rated short-circuit current breaking times	thirty	time	nineteen	Rated voltage of the opening electromagnet	110��220	V
eight	Rated operating sequence	Fen-0.3S-180S-Fen		twenty	Rated voltage of closing interlock device	110��220	V
nine	Rated lightning impulse withstand voltage (full wave)	seventy-five	kV	twenty-one	Rated voltage of voltage loss release device	110��220	V
ten	Rated short-time power frequency withstand voltage (1 minute)	forty-two	kV	twenty-two	Rated current of overcurrent release device	five	A
eleven	closing time	��0.075	S	twenty-three	Rated current of auxiliary switch	AC10��DC5	A
twelve	Opening time	��0.065	S	twenty-four	weight	��120	kg

ZN22B-12/1250-31.5 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:38:53

The VBI-12 indoor high-voltage vacuum circuit breaker has a complete solution and specifications, and is a new type of operation
Dynamic mechanism, simple and reliable. This model of circuit breaker has the following solutions:
1. There is a fully interchangeable solution with VSI.
2. One circuit is a fixed sealed pole (optional 650mm wide or 800mm wide cabinet) solution.
3. One time, the circuit did not adopt a fixed sealed pole and the phase spacing was 150mm (with a 650mm wide cabinet), which was more economical and practical.

Exterior installation dimensions:

VBI-12 Indoor High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZN28-12C series indoor high-voltage vacuum circuit breaker

2026-6-10 19:38:45

1. Overview
The ZN28-12C indoor high-voltage handcart vacuum circuit breaker (hereinafter referred to as the circuit breaker) is a three-phase AC 50Hz indoor device equipped with a DC electromagnetic operating mechanism or spring operating mechanism. It is used as a circuit breaker for KYN1-12 and JYN2-12 indoor AC metal withdrawable switchgear and is suitable for power supply and distribution systems with a rated voltage of 12kV and below. Used as control or protection switches for electrical facilities in industrial and mining enterprises, power plants, and substations, especially suitable for places with frequent operations.
2. Normal usage conditions
a) Surrounding air temperature: not exceeding 40 ��, and the average value measured within 24 hours does not exceed 35 ��; The minimum ambient air temperature is -10 ��;
b) Altitude: not exceeding 1000m;
c) The surrounding air is not significantly polluted by dust, smoke, corrosive and flammable gases, vapors, and salt spray;
d) Relative humidity: daily average not exceeding 95%, monthly average not exceeding+90%; The daily average value of water vapor pressure shall not exceed 2.2kPa, and the monthly average value shall not exceed 1.8kPa; During periods of high humidity, if the temperature drops sharply, condensation may occur;
e) Any requirements beyond the above conditions shall be agreed upon by the user and the manufacturing unit.

3. Main technical parameters of ZN28-12C series indoor high-voltage vacuum circuit breaker:

serial number	parameter name	unit	data
serial number	parameter name	unit	20kA	25kA	31.5kA
one	rated voltage	kV	twelve
two	rated frequency	Hz	fifty
three	rated current	A	630, 1250	630, 1250, 1600	1250, 1600, 2000
four	Rated short-circuit breaking current	kA	twenty	twenty-five	thirty-one point five
five	Rated short-circuit breaking current breaking times	time	thirty
six	Rated short-circuit closing current (peak)	kA	fifty	sixty-three	eighty
seven	Rated dynamic stable current		fifty	sixty-three	eighty
eight	Rated thermal stability current		twenty	twenty-five	thirty-one point five
nine	Rated thermal stability time	s	four
ten	closing time		��0.2
eleven	Opening time		��0.06
twelve	1-minute power frequency withstand voltage	kV	forty-two
thirteen	Lightning impulse withstand voltage (peak value)	kV	seventy-five
fourteen	Rated breaking current of a single capacitor bank	A	six hundred and thirty
fifteen	Rated back-to-back capacitor bank breaking current	A	four hundred
sixteen	mechanical life	time	ten thousand
seventeen	Rated operating sequence		0-0.3s-CO-180s-0
eighteen	Equipped with operating mechanism		CY17 ��, CT19 ��		CY17 ��, CT19 ��
nineteen	Rated operating voltage of the closing and opening coils of the operating mechanism	V	CD17��DC110��DC220 CT19��AC110��AC220��AC380��DC48��DC110��DC220
twenty	Contact opening distance	mm	11±1
twenty-one	overstroke		4±1
twenty-two	Allowable cumulative thickness of contact wear		three
twenty-three	Average closing speed	ms	0.6±0.2
twenty-four	Average opening speed	m/s	1.0±0.3		1.0±0.2
twenty-five	Three synchronous closing and opening of switches	ms	��2
twenty-six	Contact closing bounce time	ms	��2
twenty-seven	Oil buffer stroke	mm	ten₀^+0.5

ZN28-12C series indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN39-40.5C series indoor high-voltage vacuum circuit breaker

2026-6-10 19:38:36

1. Overview
ZN39-40.5C series vacuum circuit breaker is a three-phase AC 50Hz, rated voltage 40.5kV indoor high-voltage distribution device. Can be matched with JYN1-35/GBC-35 switchgear. Suitable for control and protection of transmission and distribution systems such as power plants and substations, especially in places with frequent operations.
The vacuum circuit breaker is a handcart type, with a reasonable structure, easy maintenance, and safe and reliable use. Equipped with CD10-II electromagnetic actuator or CT19-II spring actuator.
2. Normal usage conditions
a) Altitude: not exceeding 1000m;
b) Surrounding air temperature: maximum+40 ��, minimum -10 ��;
c) Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
d) Water vapor pressure: daily average not exceeding 2.2kPa; The monthly average value is not greater than 1.8kPa;
e) A place without fire, explosion hazard, serious pollution, chemical corrosion, and severe vibration.

3. Main technical parameters of ZN39-40.5C series indoor high-voltage vacuum circuit breaker:

serial number	name	unit	data
one	rated voltage	kV	forty point five
two	rated frequency	Hz	fifty
three	Rated power frequency withstand voltage (1min)	kV	ninety-five
four	Rated lightning impulse withstand voltage (peak)	kV	one hundred and eighty-five
five	rated current	A	1250/1600
six	Rated short-circuit breaking current	kA	twenty	twenty-five
seven	Rated short-circuit closing current (peak)		fifty	sixty-three
eight	Rated short-time withstand current		twenty	twenty-five
nine	Rated peak withstand current		fifty	sixty-three
ten	Rated short-circuit duration	A	four
eleven	Rated short-circuit breaking current breaking times	time	eight
twelve	mechanical life	time	ten thousand
thirteen	closing time	ms	��100
fourteen	Opening time	ms	��60
fifteen	Dimensions (width x depth x height)	mm	1180×1414×1728
sixteen	quality	kg	five hundred

ZN39-40.5C series indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN23-40.5C series car type indoor high-voltage vacuum circuit breaker

2026-6-10 19:38:27

The ZN23-40.5C series vehicle mounted high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is an indoor high-voltage electrical equipment with a rated voltage of 40.5kV and three-phase AC 50Hz. It is suitable for power transmission and distribution systems in industrial and mining enterprises, substations, etc., and serves as a control and protection switch; Especially suitable for industries such as metallurgy and arc steelmaking that require frequent operations, as control and protection equipment.

The ZN23-40.5C series car type indoor high-voltage vacuum circuit breaker meets the standard of G1984-89 "AC Vacuum Circuit Breaker".
This circuit breaker is a handcart type, with a reasonable structure, easy maintenance, and safe and reliable use. Equipped with CD10 �� electromagnetic actuator or CT19 �� spring actuator.
2. Normal usage conditions
a) Altitude: not exceeding 1000m;
b) Surrounding air temperature: upper limit+40 ��, lower limit -15 ��;
c) Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
d) Water vapor pressure: daily average not exceeding 2.2kPa, monthly average not exceeding 1.8kPa;
e) The surrounding air is not significantly polluted by dust, smoke, corrosive and flammable gases, vapors, and salt spray;
f) Places without severe vibrations;
g) Any requirements beyond the above conditions shall be agreed upon by the user and the manufacturing unit.

3. Main technical parameters of ZN23-40.5C series car type indoor high-voltage vacuum circuit breaker:

serial number	name	unit	data
one	rated voltage	kV	forty point five
two	Lightning impulse withstand voltage (peak value)		one hundred and eighty-five
three	1-minute power frequency withstand voltage		ninety-five
four	rated frequency	Hz	fifty
five	rated current	A	six hundred
six	Rated short-circuit breaking current	kA	twenty-five
seven	Rated short-circuit withstand current of 4s		twenty-five
eight	Rated peak withstand current		eighty
nine	Rated short-circuit breaking time	ms	��90
ten	Rated short-circuit closing current (peak)	kA	eighty
eleven	Rated operating sequence		0-0.3s-CO-180s-0
twelve	closing time	ms	50~85
thirteen	Opening time	ms	40~85
fourteen	Rated short-circuit breaking current breaking times	time	twenty
fifteen	mechanical life	time	twelve thousand
sixteen	Rated breaking current of capacitor bank	A	six hundred and thirty
seventeen	Rated power of energy storage motor	W	two hundred and seventy-five
eighteen	Rated voltage of energy storage motor	V	�� 220, 110
nineteen	Energy storage time	s	fifteen
twenty	Rated voltage of closing and opening electromagnet	V	�� 220, 110
twenty-one	Rated voltage for voltage loss trip	V	�� 220, 110
twenty-two	Rated current for overcurrent trip	A	five
twenty-three	Rated current of auxiliary switch	A	ten

ZN23-40.5C series car type indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN68-12(ZN12-12) series indoor high-voltage vacuum circuit breaker

2026-6-10 19:38:19

1. Overview
ZN68-12 (ZN12-12) series high-voltage vacuum circuit breaker is an indoor high-voltage distribution device with three-phase AC 50Hz and rated voltage of 12kV or below. This series of products has a simple structure, strong breaking capacity, long service life, complete operating functions, and easy maintenance. It is suitable for control and protection of power transmission and distribution systems such as power plants and substations, especially for places with frequent operations.
The operating mechanism of this series of products is spring energy storage type, which can be operated by AC or DC, or manually operated.

2. Normal usage conditions
a) Altitude: not exceeding 1000m;
b) Surrounding air temperature: maximum+40 ��, minimum -10 ��;
c) Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
d) Water vapor pressure: daily average not exceeding 2.2kPa; The monthly average value is not greater than 1.8kPa;
e) A place without fire, explosion hazard, serious pollution, chemical corrosion, and severe vibration.

3. ZN68-12 (ZN12-12) series indoor high-voltage vacuum circuit breaker specifications:

rated
voltage

rated
power frequency
tolerance
voltage

rated
thunder and lightning
impact
tolerance
voltage
(Peak value)

rated
short circuit
Disconnect
current

rated
short circuit
close
current
(Peak value)

rated
short circuit
sustain
time

rated
short circuit
current
Disconnect
frequency

machine
lifespan

rated current

time

one thousand two hundred and fifty

one thousand and six hundred

two thousand

two thousand and five hundred

three thousand one hundred and fifty

four thousand

twelve

forty-two

seventy-five

twenty

fifty

four

thirty

ten thousand

��

twelve

forty-two

seventy-five

twenty-five

sixty-three

four

thirty

ten thousand

��

twelve

forty-two

seventy-five

thirty-one point five

eighty

four

thirty

ten thousand

��

twelve

forty-two

seventy-five

forty

one hundred

four

thirty

ten thousand

��

twelve

forty-two

seventy-five

fifty

one hundred and twenty-five

four

thirty

ten thousand

��

4. Main technical parameters of ZN68-12 (ZN12-12) series indoor high-voltage vacuum circuit breaker:

serial number	name	unit	data
serial number	name	unit	20kA	31.5kA	40kA
one	Rated short-circuit breaking current	kA	twenty	thirty-one point five	forty
two	Rated short-circuit closing current (peak)		fifty	eighty	one hundred
three	Rated short-time withstand current		twenty	thirty-one point five	forty
four	Rated peak withstand current		fifty	eighty	one hundred
five	Rated short-circuit duration	s	four
six	Rated short-circuit breaking current breaking times	time	thirty
seven	mechanical life	time	ten thousand
eight	closing time	ms	��75
nine	Opening time	ms	��65
ten	Single capacitor bank breaking current	A	six hundred and thirty
eleven	Back to back capacitor bank breaking current	A	four hundred
twelve	Rated voltage of energy storage motor	V	DC220��110�� AC220��110
thirteen	Closing voltage		DC220��110�� AC220��110
fourteen	Opening voltage		DC220��110�� AC220��110
fifteen	Power of opening and closing coils	W	two hundred and forty-five

ZN68-12 (ZN12-12) series indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN101-12 Vacuum Circuit Breaker

2026-6-10 19:38:10

Product Features of ZN101-12 Vacuum Circuit Breaker

1. The peak withstand current reaches 100kA.
2. For this circuit breaker, all mechanical travel curves are within the envelope, and the distance from the reference mechanical travel curve does not exceed ± 2mm.
3. Mechanical lifespan: The overall mechanical lifespan of this circuit breaker reaches 60000 cycles. The mechanical characteristics before and after the lifespan meet the requirements of the new standard. The mechanical lifespan of the arc extinguishing chamber is greater than 30000 times.
4. Temperature rise test: Passed the type test at 1.1 times the rated current, which is 1375A.
5. Manual disconnection: The ZNB type permanent magnet vacuum circuit breaker developed by the factory has successfully undergone a type test of manual disconnection with a rated current of 1250A and continuous operation for 10 times at the Electric Power Research Institute. This experiment is rarely conducted in China.
6. EMC (Electromagnetic Compatibility) test: Conducted the most rigorous level of testing according to the new standards. Under various interference conditions, the electronic controller works normally, and the circuit breaker has no abnormal phenomena such as misoperation or refusal to operate.

Technical parameters of ZN101-12 vacuum circuit breaker

serial number	name		unit	parameter
one	rated voltage		kV	twelve
two	Rated insulation level	1min power frequency withstand voltage (effective value)	kV	forty-two
		Lightning impulse withstand voltage (peak value)		seventy-five
three	rated frequency		Hz	fifty
four	Interphase center distance		mm	150��170��210
five	rated current		A	one thousand two hundred and fifty
six	Rated short-circuit breaking current		kA	thirty-one point five
seven	Rated short-time withstand current			thirty-one point five
eight	Rated short-circuit closing current (peak)			one hundred
nine	Rated peak withstand current			one hundred
ten	DC component			��40%
eleven	Rated cable charging opening and closing current		A	25 (C2 level)
twelve	Rated operating sequence			Split -0.3s - Split -180s - Split - Split
thirteen	Rated short-circuit current duration		s	four
fourteen	Circuit breaker electrical life			E2 level
fifteen	mechanical life	Circuit breaker (mechanism)	time	sixty thousand
		Arc extinguishing chamber		thirty thousand
sixteen	Allowable cumulative thickness of wear for dynamic and static contacts		mm	three
seventeen	Rated current for manual emergency disconnection		A	one thousand two hundred and fifty
eighteen	EMC electromagnetic compatibility			GB/Tll022 related regulations

[Indoor vacuum circuit breaker]ZN12-40.5 series indoor vacuum circuit breaker

2026-6-10 19:38:01

The ZN12 indoor vacuum circuit breaker is suitable for 35kV three-phase AC 50Hz power systems. The arc chamber of this circuit breaker is made of ceramic structure and adopts longitudinal magnetic field contacts. It has a small volume, and the diffusion arc current generated during disconnection is uniformly distributed on the contacts, without local melting phenomenon. It also has low arc energy voltage (20-200V) and low current cutoff value (4-5A), and is equipped with a highly reliable operating mechanism.

The ZN12-40.5 series indoor vacuum circuit breaker adopts the DYT-1 spring energy storage mechanism, which can be operated by AC energy storage supporting DC or manually operated. This circuit breaker adopts special contact materials, which enable the arc extinguishing chamber to have a high breaking capacity and a long electrical life.

This circuit breaker has a simple structure, strong breaking capacity, long service life, complete operating functions without explosion hazards, and simple maintenance. It is suitable for controlling or protecting switches in power plants, substations and other distribution systems, especially for breaking important loads and frequent operation places.

Main technical parameters of ZN12-40.5 series indoor vacuum circuit breaker

serial number	project		unit	Technical Specifications
one	rated voltage		kV	forty point five
two	rated current		A	one thousand two hundred and fifty		one thousand and six hundred	two thousand
three	Rated short-circuit breaking current		kA	twenty	thirty-one point five	twenty-five	thirty-one point five
four	Dynamic stability current (peak value)		kA	fifty	eighty	sixty-three	eighty
five	4S thermal stability current		kA	twenty	thirty-one point five	twenty-five	thirty-one point five
six	Rated short-circuit closing current (peak)		kA	fifty	eighty	sixty-three	eighty
seven	Rated short-circuit current breaking times		time	twenty
eight	Rated operating sequence			0-03s-C0-180s-C0
nine	Rated Absolute Edge level	1-minute power frequency withstand voltage	kA	ninety-five
		Lightning impulse withstand voltage (peak value)		one hundred and eighty-five
ten	mechanical life		time	ten thousand
eleven	Rated opening and closing current of a single capacitor bank		A	six hundred and thirty
twelve	Rated back-to-back capacitor bank current		A	four hundred
thirteen	Rated voltage of energy storage motor		V	AC��DC��110�� two hundred and twenty
fourteen	Rated power of energy storage motor		W	two hundred and seventy-five
fifteen	Energy storage time of energy storage motor		S	��15
sixteen	Rated voltage of the closing and opening coil		V	AC��DC��110�� two hundred and twenty
seventeen	Rated current of closing and opening coil		A	1.91 (AC), 0.89 (DC)
eighteen	Rated current of overcurrent release device		A	five
nineteen	Contact opening distance		mm	25±2
twenty	Contact stroke of contacts		mm	6±2
twenty-one	Three phase separation with different phases		ms	��2
twenty-two	Contact closing bounce time		ms	��3

ZN12-40.5 series indoor vacuum circuit breaker appearance and installation dimensions

	L	L1	L2
ZN72-40.5	three hundred and fifty	eight hundred	eight hundred and thirty
ZN-40.5	four hundred and sixty	one thousand one hundred and twenty-eight	one thousand one hundred and seventy-five

ZN12-40.5 series indoor vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN12-12(40.5) High Voltage Vacuum Circuit Breaker

2026-6-10 19:37:52

1.1 ZN12-12 and ZN12-40.5 high-voltage vacuum circuit breakers are indoor high-voltage switchgear with rated voltages of 12KV and 40.5KV, three-phase AC 50Hz, respectively. They are integrated vacuum circuit breakers manufactured with advanced foreign technology.

The operating mechanism of ZN12-12 (40.5) high-voltage vacuum circuit breaker is spring energy storage type, which can be operated by AC or DC. It can also be manually operated.

1.2 This circuit breaker has a simple structure. Strong breaking ability, long service life, complete operating functions, no explosion hazard, easy maintenance, suitable for control or protection switches in power plants, substations and other transmission and distribution systems, especially suitable for breaking important loads and places with frequent operations.

1.3 Environmental conditions for use:

Altitude: Below 1000m (if the altitude exceeds 1000m, follow the relevant provisions of DL/T593-1996 "Technical Guidelines for Shared Ordering of High Voltage Switchgear").
Environmental temperature: maximum+40 ��, minimum -25 ��
Environmental humidity: daily average not exceeding 95%, monthly average not exceeding 90%
Seismic intensity: below 8 degrees

1.4 Outline drawing: Refer to Figure 1 and Figure 2.
Figure 1 Outline drawing of ZN12-12

Figure 2 Outline drawing of ZN12-40.5

2.1 Implementation standards: GB1984-89 "AC High Voltage Circuit Breakers", JB3855-85 "General Technical Conditions for 10kV Indoor High Voltage Vacuum Circuit Breakers", ZBK43004-89 "General Technical Conditions for 35kV Indoor High Voltage Vacuum Circuit Breakers".

2.2 ZN12-12 (40.5) High Voltage Vacuum Circuit Breaker Model Meaning

A place without fire or explosion hazards, corrosive gases, and severe vibrations.

[Indoor vacuum circuit breaker]VS1-24 Indoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:37:44

The VS1-24 indoor AC high-voltage vacuum circuit breaker is an integral fully enclosed, small in size, and compact in structure high-voltage switchgear. It is suitable for use in power systems with three-phase AC 50Hz and rated voltage of 12kV, as a control and protection device for lines and electrical equipment. And it can be used in places with frequent operations.
Product features: 1 Integrated structure.
2. Enclosed installation of arc extinguishing chamber.
3. High performance vacuum arc extinguishing.
4. Good mechanical properties.
5. Flexible and diverse installation forms.

VS1-24 Indoor AC High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZN65-12 Indoor AC High Voltage Vacuum Circuit Breaker

2026-6-10 19:37:35

The ZN65-12 indoor high-voltage vacuum circuit breaker is an important component in power distribution lines, responsible for functions such as connecting, cutting off, and fault protection of line power. This circuit breaker can be used in power systems with three-phase AC 50Hz and rated voltage of 12kV and below. It can be used for controlling and protecting electrical equipment in industrial and mining enterprises, power plants, and substations, and is suitable for frequent operation in places.

[Indoor vacuum circuit breaker]VS1-12 Indoor mounted high-voltage vacuum circuit breaker

2026-6-10 19:37:25

VS1-12 indoor mounted high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]Indoor solid sealed high-voltage vacuum circuit breaker

2026-6-10 19:37:17

VS1 Indoor Sealed High Voltage Vacuum Circuit Breaker

[Indoor vacuum circuit breaker]ZN63A(VS1)-12 series indoor high-voltage vacuum circuit breaker

2026-6-10 19:37:08

I. Overview
The ZN63A (VS1) indoor high-voltage vacuum circuit breaker is a three-phase AC 50HZ indoor high-voltage switchgear with a rated voltage of 7.2~kV. The circuit breaker complies with China's national standards GB1984-89 "AC High Voltage Circuit Breaker", GB3855-1996 "3.6-40.5kV Indoor AC High Voltage Vacuum Circuit Breaker", DL403-01 "10-35kV Indoor High Voltage Vacuum Circuit Breaker Ordering Technical Conditions" and relevant IEC standards, and has reliable interlocking function.
The ZN63A (VS1) indoor high-voltage vacuum circuit breaker can perform frequent operations and has the ability to open and close multiple times and quickly reclose.
The ZN63A (VS1) indoor high-voltage vacuum circuit breaker is designed with a front and rear split structure, which can be used as a fixed installation unit or as a separate handcart with the chassis.

2�� Environmental conditions for use
1. Surrounding air temperature:+40 �� to -15 �� (daily average not exceeding -35 ��);
2. Altitude not exceeding 1000 meters;
3. The monthly average relative humidity of the air shall not exceed 90%, and the daily average shall not exceed 95%;
4. The seismic intensity shall not exceed 8 degrees;
5. The place of use is free from flammable, explosive hazards, chemical corrosion, and severe vibration.

3�� ZN63A (VS1) -12 series indoor high-voltage vacuum circuit breaker model and significance

4�� Ordering Notice
Users should indicate when placing an order:
1. Circuit breaker model, name, and order quantity;
2. Rated voltage, rated current, and rated short-circuit breaking current of the circuit breaker.
3. Rated operating voltage;
4. Names and quantities of spare parts and components;
5. If the user has any other special requirements, they can specify them when placing an order.

5�� Main technical parameters of ZN63A (VS1) -12 series indoor high-voltage vacuum circuit breaker

Rated voltage kV			twelve
Rated frequency Hz			fifty
Rated insulation level	1-minute power frequency withstand voltage Phase to phase, relative to ground/isolated fracture kV		42/48 (valid value)
	Lightning impulse tolerance Phase to phase, relative to ground/isolated fracture kV		75/85 (peak)
Rated operating sequence			Fen-F combined Fen-F1 combined Fen*
Main circuit resistance ��			��40
Mechanical lifespan times			one thousand
model	Rated current A	Rated short-circuit breaking current kA	Rated short-circuit closing current (peak) kA	rated short-circuit Duration S	Rated short-circuit breaking Current interruption times (times)
ZN��-12/630-20	six hundred and thirty	20/25	50/63	four	one hundred
ZN��-12/1250-20	one thousand two hundred and fifty
ZN��-12/1250-31.5	one thousand two hundred and fifty	thirty-one point five	eighty		fifty
ZN��-12/1600-31.5	one thousand and six hundred
ZN��-12/2000-31.5	two thousand
ZN��-12/2500-31.5	two thousand and five hundred
ZN��-12/1250-31.5	one thousand two hundred and fifty	<>	one hundred		thirty
ZN��-12/1250-40	one thousand and six hundred
ZN��-12/1600-40	two thousand
ZN��-12/2000-40	two thousand and five hundred
ZN��-12/2500-40	three thousand one hundred and fifty
Note: When the short-circuit breaking current is 20, 25, and 31.5kA, f=0.3s, f1=180s Short circuit breaking current 40kA, f=0.180s, f1=180s

ZN63-12/1250-31.5 (800mm) Appearance and installation dimensions (210mm apart)

Internal electrical schematic diagram of circuit breaker

ZN63A (VS1) -12 series indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN23-40.5 series indoor high-voltage vacuum circuit breaker

2026-6-10 19:36:59

ZN23-40.5 series indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]ZN85-40.5 series indoor high-voltage vacuum circuit breaker

2026-6-10 19:36:50

The ZN85-40.5 series indoor high-voltage vacuum circuit breaker is suitable for use in three-phase AC 50HZ \ 40.5KV systems, and can be used for load current, overload current, and fault current in industrial and mining enterprises, power plants, and substations. It is also suitable for frequent operation.

ZN85-40.5/1600-25
ZN85-40.5/200-31.5

project	unit	parameter
rated voltage	KV	forty point five
1-minute power frequency withstand voltage (effective value)	KV	ninety-five
Lightning impulse withstand (peak value)	KV	one hundred and eighty-five
rated frequency	HZ	fifty
rated current	A	1600 2000
Rated short-time withstand current	KA	thirty-one point five
Rated peak withstand current	KA	eighty
Rated short-time duration	S	four
Rated short-circuit breaking current	KA	thirty-one point five
Rated short-circuit closing current	KA	eighty
Rated operating sequence		o-03.s-co-180s-co
Cut off time	MS	<80
Rated short-circuit breaking current breaking times	time	twenty
Single capacitor bank breaking current	A	six hundred and thirty
Back to back capacitor bank breaking current	A	four hundred
Rated operating voltage	V	��110 ��220
mechanical life	time	ten thousand

ZN85-40.5 series indoor high-voltage vacuum circuit breaker

[Indoor vacuum circuit breaker]Indoor high-voltage switch vacuum circuit breaker

2026-6-10 19:36:42

The ZN21-12 indoor high-voltage vacuum circuit breaker is a product with international advanced level manufactured by introducing advanced foreign technology. This product not only has high mechanical reliability, long electrical life, and strong breaking ability, but also has a small size and light weight, making it a high-performance non maintenance circuit breaker that can replace imported ones.

The product structure is simple and compact, with complete operating functions. Its operating mechanism is a spring energy storage type, which can be operated by AC or DC or manually. It also has anti bounce protection and can be installed with voltage loss and overcurrent release devices. Compared with previous switches, it is smaller in size and lighter in weight. The operating mechanism and electrical components are integrated into a single structure, which not only makes the structure of the switch more compact, but also makes the switch work more reliably. This circuit breaker can be installed on a fixed frame to become a fixed switch, or installed in the frame to become a handcart switch. Regardless of the installation method, it does not affect the mechanical and electrical performance of the circuit breaker.

The ZN21-12 indoor high-voltage switch vacuum circuit breaker is particularly suitable for use with a mid mounted switchgear to replace imported circuit breakers due to its small size. It can also be installed in a double-layer mid mounted switchgear, making it smaller in size and occupying less space. The primary part of the circuit breaker is installed on a three-phase integrated insulation frame, and the vacuum arc extinguishing chambers of each phase are fixed in U-shaped slots. It not only has high mechanical strength and can overcome the electric force generated by short-circuit current, but also improves the composite insulation strength between phases. The insulation frame made of new high-strength, high flame retardant, unsaturated polyester SMC can effectively prevent the expansion of an accident and avoid the impact of an accident on the operating mechanism and secondary parts. Due to the adoption of reliability design, the mechanical and electrical reliability of the product has been improved, and it does not require maintenance for 20 years under normal usage conditions. In special circumstances, when the short-circuit current of the circuit breaker reaches the specified number of times, it only needs to replace the vacuum arc extinguishing chamber to be reused, and its performance is restored to its original state. There are multiple product specifications and a wide range of varieties, from small currents with large quantities and wide coverage to high currents with special requirements, fully meeting the various needs of users. This product is a 12KV three-phase AC 50Hz high-voltage switchgear, suitable for control or protection of power transmission and distribution systems such as power plants and substations, especially for important loads and frequent operations in chemical, metallurgical, mining and other places.

The ZN21-12 indoor high-voltage vacuum circuit breaker complies with the requirements of GB 1984 "AC High Voltage Circuit Breakers", JB 3855 "3.6-40.5KV Indoor High Voltage Vacuum Circuit Breakers", DL/T 402 "Technical Conditions for Ordering AC High Voltage Circuit Breakers", and relevant requirements of IEC 56.

[Indoor vacuum circuit breaker]Indoor high-voltage vacuum circuit breaker

2026-6-10 19:36:33

The ZN66-12 series reinforced insulation indoor high-voltage vacuum circuit breaker is jointly designed by two departments (the Ministry of Electric Power and the Ministry of Machinery), and is a new generation 12KV series vacuum circuit breaker with leading level among similar products in China. This product not only meets the requirements of GB1984 "AC High Voltage Circuit Breakers" and DL402 "Technical Conditions for Ordering AC High Voltage Circuit Breakers", but also complies with the requirements of DL403 "Technical Conditions for Ordering 10-30KV Indoor High Voltage Vacuum Circuit Breakers". This series of vacuum circuit breakers is an indoor device with a rated voltage of 12KV and a three-phase AC frequency of 50Hz. They are installed in various switch cabinets for the protection and control of electrical facilities in industrial and mining enterprises, power plants, and substations. They are also suitable for places with condensation, mild pollution, and frequent operation.

[Indoor vacuum circuit breaker]RMVS1 series high-voltage vacuum circuit breaker

2026-6-10 19:36:24

RMVS1 (ZN63A) vacuum circuit breaker is an indoor high-voltage switchgear. Under normal operating conditions, as long as it is within the technical parameters of the circuit breaker, it can ensure safe and reliable operation in the corresponding voltage level of the power grid. This product can perform frequent operations or break short-circuit currents multiple times within the working current range; The mechanical lifespan can reach up to 20000 times, and the full capacity short-circuit current can be broken up to 50 times. It is suitable for reclosing operation and has extremely high operational reliability and lifespan. Its installation form inside the switchgear can be either fixed, withdrawable, or installed on a frame for use.

Technical data and performance of RMVS1 series high-voltage vacuum circuit breaker:

project	unit	numerical value
rated voltage	kV	twelve
Rated insulation level	1-minute power frequency withstand voltage	kV	42 (fracture 48)
	Lightning impulse withstand voltage (peak value)	kV	75 (fracture 85)
rated frequency		Hz	fifty
rated current		A	630,1250	630,1250,1600,2000,2500,3150	1600,2000,2500,3150,4000	4000��5000
Rated short-circuit breaking current (effective value)		kA	twenty-five	thirty-one point five	forty	fifty
Rated peak withstand current		kA	sixty-three	eighty	one hundred	one hundred and twenty-five
Rated short-circuit closing current		kA	sixty-three	eighty	one hundred	one hundred and twenty-five
Rated short-time withstand current		kA	twenty-five	thirty-one point five	forty	fifty
Rated short-circuit duration		s	four
Rated breaking current of single/back-to-back capacitor bank		A	630/400 (800/400 for 40~50kA)
Rated capacitor bank closing inrush current		kA	12.5 (frequency not exceeding 1000Hz)
Rated opening and closing cable charging current		A	twenty-five
Rated operating sequence	Automatic reclosing (25~31.5kA)	-	Min-0.3s HeFen-180s HeFen
	Non automatic reclosing (40~50kA)	-	Split -180s - Split -180s - Split
Rated operating voltage of operating mechanism		V	AC��110,220�� DC��110,220
closing time		ms	30~70
Opening time			20~50
arcing time			��15
Classification of mechanical lifespan		-	M2 level 20000 times (40~50kA for M1 level 10000 times)
Classification of electrical lifespan		-	E2 level
Classification of the ability to open and close capacitive currents		-	C2 level
Center distance between phases ��	Rated current �� 2000A	mm	210±0.5
	Rated current �� 2000A		275±0.5
Contact closing bounce time	Rated current �� 2000A	ms	��2
	Rated current �� 2000A		��3
Three phase on-off asynchrony			��2
Allowable cumulative thickness of wear for dynamic and static contacts		mm	three
Contact opening distance			11±1
overstroke			3±0.5
Average closing speed		m/s	0.5~0.8
Average opening speed			0.9~1.2
loop resistance	630A	�̦�	��50
	1250A		��45
	1600~2000A		��35
	2500~3150A		��25
	4000~5000A		��18

Note ��: When the rated current is 1600A and the breaking current is 31.5kA, a distance of 210 or 275 is optional; When the rated current is 1600A and the breaking current is 40.5kA, the distance is 275.

[Indoor vacuum circuit breaker]ZN28 series high-voltage vacuum circuit breaker

2026-6-10 19:36:15

The ZN28-12 series vacuum circuit breaker is a high-voltage indoor switchgear with a rated voltage of 12kV and three-phase AC 50Hz. It is a product manufactured by our factory with technology introduced from Xi'an High Voltage Apparatus Research Institute.

The ZN28 series high-voltage vacuum circuit breaker complies with the GB1984-89 standard and is currently a substitute product for domestically produced ZN3, ZN4, and ZN5B.

The ZN28-12 series vacuum circuit breaker is a miniaturized structure with the characteristics of small size, large breaking capacity, long service life, no explosion hazard, simple maintenance, and low cost. It is suitable for protection and control in industrial and mining enterprises, power plants, and substations, especially in places with frequent operations such as switching capacitor banks, controlling electric furnace transformers, and high-voltage motors. The overall structure of this product is divided into two forms: integrated installation of switch body and operating mechanism, and separate installation of switch body and operating mechanism. The integrated structure is the basic type of ZN28-12, suitable for various mid mounted fixed switchgear, such as OGXZ-12. There are two types of split structure: ZN28A-12 type, suitable for various fixed switchgear, such as GG-1A, XGNZ-12 and ZN28C-12 type; Suitable for various floor standing handcart style switchgear, such as JYNZ-12, KYNI-12, etc.
This product can be equipped with CD17, CD10 DC electromagnetic operating mechanisms and CT8, CTI7, CT19 spring energy storage operating mechanisms.

Model and its meaning

Overview

Technical Specifications

Outline drawing

Main technical parameters of circuit breaker

serial number	name	unit	data
serial number	name	unit	ZN28.12/1250.20	1250 ZN28-12/1600.31.5 two thousand	two thousand ZN28-12/2500-40 three thousand one hundred and fifty
one	rated voltage	KV	twelve
two	maximum voltage	KV	twelve
three	rated current	A	one thousand two hundred and fifty	1250 1600 2000	2000 2500 3150
four	Rated short-circuit breaking current	KA	twenty	thirty-one point five	forty

Dimensions of ZN28-12 series circuit breaker (mm)

five	Rated short-circuit closing current (peak)	KA	fifty	80I100
six	Rated dynamic stability current (peak value)	KA	fifty	80I100
seven	Rated stable current (effective value)	KA	twenty	31.5 40
eight	Rated thermal stability time	S	four
nine	Rated short-circuit breaking current breaking times	time	30(50)	thirty
ten	Total breaking time	ms	��100
eleven	Rated operating sequence		Split -0.3s split -180s split	Split -180s Split -180s Split
twelve	One minute power frequency withstand voltage (effective value)	KV	forty-two
thirteen	Lightning impulse withstand voltage	KV	seventy-five
fourteen	mechanical life	time	ten thousand
fifteen	Rated breaking current of a single capacitor bank	A	six hundred and thirty
sixteen	Rated back-to-back capacitor bank breaking current	A	four hundred

ZN28 series high-voltage vacuum circuit breaker

ZN28-12/1250--20	seven hundred and thirty-one	six hundred and seventy-eight	five hundred and seventy-two	six hundred and eighteen	twenty-three	two hundred and seventy-five	two hundred and sixty-three	six hundred	two hundred and thirty
1250 ZN28-1 -2/1600-31.5 2000	seven hundred and ninety	seven hundred and thirty	five hundred and twenty-seven	six hundred and eighteen	twenty-three	31 6	two hundred and twenty-seven	six hundred and forty	two hundred and fifty
ZN28-12/2000-40	seven hundred and ninety	seven hundred and thirty	five hundred and seventy-seven	six hundred and twenty-three	twenty-three	three hundred and sixteen	two hundred and twenty-seven	six hundred and forty	two hundred and fifty
ZN28-12/3150-40	eight hundred and forty-two	seven hundred and ninety-two	six hundred and six	six hundred and fifty-two	twelve	three hundred and forty-two	two hundred and twenty-seven	six hundred and ninety	two