Shanghai Huabang Industrial Business Network - Glass arc extinguishing chamber

[Glass arc extinguishing chamber]BD1-126/2000-40 Vacuum arc extinguishing chamber

2026-6-16 14:40:46

The vacuum arc extinguishing chamber for BD port 1-126/2000-40 vacuum circuit breaker is used for ZW-126.

[Glass arc extinguishing chamber]BD1-72.5/2000-31.5 Vacuum arc extinguishing chamber

2026-6-16 14:40:38

The vacuum arc extinguishing chamber for BD port 1-72.5/2000-31.5 vacuum circuit breakers is a glass insulated enclosure used for vacuum circuit breakers.

[Glass arc extinguishing chamber]BD700Z Vacuum arc extinguishing chamber

2026-6-16 14:40:30

Vacuum arc extinguishing chamber for BD700Z vacuum circuit breaker (BD700 (24kV/1250A-16k) used for ZN-24, etc

[Glass arc extinguishing chamber]BD1-126/2500-40 Vacuum arc extinguishing chamber

2026-6-16 14:40:21

The main supporting machine models and usage locations of vacuum arc extinguishing chambers for BD1-126/2500-40 vacuum circuit breakers (reference):

[Glass arc extinguishing chamber]BD11-12/1000-25A Vacuum arc extinguishing chamber

2026-6-16 14:40:13

Vacuum arc extinguishing chamber for BD11-12/1000-25A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/3150-40 Vacuum arc extinguishing chamber

2026-6-16 14:40:04

Vacuum arc extinguishing chamber for BD11-12/3150-40 vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/2500-40A Vacuum arc extinguishing chamber

2026-6-16 14:39:56

Vacuum arc extinguishing chamber for BD11-12/2500-40A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/2000-31.5A Vacuum arc extinguishing chamber

2026-6-16 14:39:47

Vacuum arc extinguishing chamber for BD11-12/2000-31.5A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/2000-40A Vacuum arc extinguishing chamber

2026-6-16 14:39:38

Vacuum arc extinguishing chamber for BD11-12/2000-40A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/1600-40A Vacuum arc extinguishing chamber

2026-6-16 14:39:30

Vacuum arc extinguishing chamber for BD11-12/1600-40A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/2500-31.5A Vacuum arc extinguishing chamber

2026-6-16 14:39:21

Vacuum arc extinguishing chamber for BD11-12/2500-31.5A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/800-16D Vacuum arc extinguishing chamber

2026-6-16 14:39:13

BD11-12/800-16D vacuum circuit breaker with vacuum arc extinguishing chamber for vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/630-25A Vacuum arc extinguishing chamber

2026-6-16 14:39:05

Vacuum arc extinguishing chamber for BD11-12/630-25A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/1600-25A Vacuum arc extinguishing chamber

2026-6-16 14:38:56

Vacuum arc extinguishing chamber for BD11-12/1600-25A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/630-16A Vacuum arc extinguishing chamber

2026-6-16 14:38:48

Vacuum arc extinguishing chamber for BD11-12/630-16A vacuum circuit breaker with ZN28, 33, 63, 68 series vacuum circuit breakers

[Glass arc extinguishing chamber]BD11-12/1000-20A Vacuum arc extinguishing chamber

2026-6-16 14:38:39

Vacuum arc extinguishing chamber for BD11-12/1000-20A vacuum circuit breaker

[Glass arc extinguishing chamber]BD11-12/1250-20A Vacuum arc extinguishing chamber

2026-6-16 14:38:31

BD11-12/1250-20A vacuum arc extinguishing chamber for ZN28, ZN33, ZN63, ZN68 vacuum circuit breakers

[Glass arc extinguishing chamber]BD11-12/1250-25A Vacuum arc extinguishing chamber

2026-6-16 14:38:22

BD11-12/1250-25A vacuum circuit breaker with vacuum arc extinguishing chamber equipped with ZN28, ZN33, ZN63, ZN68 circuit breakers

[Glass arc extinguishing chamber]BF-40.5/630-20 (3010) Vacuum arc extinguishing chamber

2026-6-16 14:38:14

Main technical parameters of vacuum arc extinguishing chamber for BF-40.5/630-20 (3010) load switch

serial number	parameter name	unit	numerical value
one	rated voltage	KV	forty point five
two	rated current	A	six hundred and thirty
three	Rated closed-loop breaking current	A	six hundred and thirty
four	Rated short-circuit closing current	KA	fifty
five	Rated short-circuit withstand current (4S)	KA	twenty
six	Rated peak withstand current	KA	fifty
seven	Rated active load breaking current	A	six hundred and thirty
eight	Rated cable charging breaking current	A	ten
nine	Short time power frequency withstand voltage (1min)	KV	ninety-five
ten	Circuit resistance at lower limit of rated contact pressure	��	��40
eleven	mechanical life	time	ten thousand
twelve	Allowable wear thickness of contacts	mm	three
thirteen	Contact self closing force	N	100±50
fourteen	Contact reaction force at rated opening distance	N	150±50

Mechanical characteristics and parameters of vacuum switch equipment for product matching

one	contact gap	mm	16±1
two	Average opening speed	m/s	1.2±0.2
three	Average closing speed	m/s	0.8±0.2
four	Rated contact pressure	N	850±100
five	Contact closing bounce time	ms	��2
six	Non synchronous closing and opening of contacts	ms	��1
seven	Rebound amplitude of the opening contact	mm	��1.5

BF-40.5/630-20 (3010) Vacuum arc extinguishing chamber for load switch

[Glass arc extinguishing chamber]BD-12/630-12.5 Glass vacuum arc extinguishing chamber

2026-6-16 14:38:05

Overview
The glass vacuum arc extinguishing chamber for BD-12/630-12.5 circuit breakers adopts a medium sealed structure, a glass shell, contacts made of CuCr50 alloy material, a cup-shaped longitudinal magnetic structure, and has the characteristics of high current breaking capacity, high insulation level, strong arc extinguishing ability, long service life, small size, simple maintenance, no explosion hazard, no pollution, and low noise. The outdoor vacuum circuit breaker assembled with it is used for control and protection in power transmission and distribution systems such as industrial and mining, enterprises, and substations.

Main technical parameters

Parameter name	Unit Unit	Numerical Value
Rated voltage	kV	twelve
Rated normal current	A	six hundred and thirty
Rated short circuit breaking current	kA	twelve point five
Rated short circuit making current	kA	forty
Rated peak withstand current	kA	forty
Rated short-time withstand current	kA	twelve point five
Rated duration of short circuit	S	four
Rated breaking current of a single capacitor bank Rated single capacitor unit breaking current	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current Rated back to back capacitor unit breaking current	A	four hundred
Rated short time power frequency withstand voltage (1min)	kV	forty-two
Circuit resistance at lower limit of rated contact pressure	�̦�	��30
Rated short-circuit breaking current breaking times Rated short circuit breaking current breaking times	time time	thirty
Rated lightning impulse withstand voltage Rated lightning impulse withstand voltage	kV	seventy-five
mechanical life Mechanical endurance	Next time	ten thousand
Closing force due to bellows and atmosphere	N	100±50
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	180±50
Allowable wear thickness of contacts Contact-wear allowance Contact-wear allowance thickness	mm	three
Internal gas pressure	Pa	��1.33×10��^three
Allow storage period	Year year	twenty

Mechanical parameters of glass vacuum arc extinguishing chamber for BD-12/630-12.5 circuit breaker

Project	Unit Unit	Numerical Value
Contact stroke distance	mm	11±1
Contact travel	mm	3.5±0.5
Average closing speed	m/s	0.6±0.2
Average opening speed	m/s	1.1±0.2
Rated contact pressure	N	1600±200
Contact closing bounce time	ms	��2
Non synchronous closing and opening of contacts Out of simultaneity of contact closing and opening	ms	��2

Glass vacuum arc extinguishing chamber for circuit breaker BD-12/630-12.5

[Glass arc extinguishing chamber]BD-12/1250-20 Glass vacuum arc extinguishing chamber

2026-6-16 14:37:57

Overview
The glass vacuum arc extinguishing chamber for BD-12/1250-20 circuit breaker adopts a medium sealed structure, glass shell, CuCr50 alloy contacts, cup-shaped longitudinal magnetic structure, with the characteristics of large current breaking capacity, high insulation level, strong arc extinguishing ability, long service life, small size, simple maintenance, no explosion hazard, no pollution, low noise, etc. The outdoor vacuum circuit breaker assembled with it is used for control and protection in power transmission and distribution systems such as industrial and mining, enterprises, and substations.

Main technical parameters

Parameter Name Parameter name	unit Unit	numerical value Value
Rated voltage	kV	twelve
Rated normal current	A	one thousand two hundred and fifty
Rated short circuit breaking current	kA	twenty
Rated short circuit making current	kA	fifty
Rated peak withstand current	kA	fifty
Rated short-time withstand current	kA	twenty
Rated duration of short circuit	S	four
Rated single capacitor unit breaking current	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current Rated back to back capacitor unit breaking current	A	four hundred
Rated short-time (1min) power frequency withstand voltage Rated short time power frequency withstand voltage (1min)	kV	forty-two
Circuit resistance under rated contact pressure Circuit resistance at lower limit of rated contact pressure	�̦�	��30
Rated short-circuit breaking current breaking times Rated short circuit breaking current breaking times	Next time	thirty
Rated lightning impulse withstand voltage Rated lightning impulse withstand voltage	kV	seventy-five
Mechanical endurance	Next time	ten thousand
Closing force due to bellows and atmosphere	N	120±50
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	200±50
Contact wear allowance thickness	mm	three
Internal gas pressure	Pa	��1.33×10��^three
Allow storage period	Year year	twenty

Mechanical parameters of glass vacuum arc extinguishing chamber for circuit breaker BD-12/1250-20

Project	unit Unit	numerical value Value
Contact stroke distance	mm	11±1
Contact travel	mm	3.5±0.5
Average closing speed	m/s	0.6±0.2
Average opening speed	m/s	1.1±0.2
Rated contact pressure	N	2000±200
Contact closing bounce time	ms	��2
Non synchronous closing and opening of contacts Out of simultaneity of contact closing and opening	ms	��2

Glass vacuum arc extinguishing chamber for circuit breaker BD-12/1250-20

[Glass arc extinguishing chamber]BD-12/1250-25 Glass vacuum arc extinguishing chamber

2026-6-16 14:37:48

Overview
The glass vacuum arc extinguishing chamber for BD-12/1250-25 circuit breaker adopts a medium sealed structure, glass shell, CuCr50 alloy contacts, cup-shaped longitudinal magnetic structure, with the characteristics of large current breaking capacity, high insulation level, strong arc extinguishing ability, long service life, small size, simple maintenance, no explosion hazard, no pollution, low noise, etc. The outdoor vacuum circuit breaker assembled with it is used for control and protection in power transmission and distribution systems such as industrial and mining, enterprises, and substations. Product Description

Main technical parameters of glass vacuum arc extinguishing chamber for circuit breaker BD-12/1250-25

Parameter Name Parameter name	unit Unit	numerical value Value
rated voltage Rated voltage	kV	twelve
rated current Rated normal current	A	one thousand two hundred and fifty
Rated short-circuit breaking current Rated short-circuit breaking current	kA	twenty-five
Rated short-circuit closing current Rated short-circuit making current	kA	sixty-three
Rated peak withstand current Rated peak withstand current	kA	sixty-three
Rated short-time withstand current Rated short-time withstand current	kA	twenty-five
Rated short-circuit duration Rated duration of short circuit	S	four
Rated breaking current of a single capacitor bank Rated single capacitor unit breaking current	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current Rated back to back capacitor unit breaking current	A	four hundred
Rated short-time (1min) power frequency withstand voltage Rated short time power frequency withstand voltage (1min)	kV	forty-two
Circuit resistance under rated contact pressure Circuit resistance at lower limit of rated contact pressure	�̦�	��30
Rated short-circuit breaking current breaking times Rated short circuit breaking current breaking times	time time	thirty
Rated lightning impulse withstand voltage Rated lightning impulse withstand voltage	kV	seventy-five
mechanical life Mechanical endurance	time time	ten thousand
Contact self closing force Closing force due to bellow and atmosphere	N	120±50
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	200±50
Allowable wear thickness of contacts Contact-wear allowance thickness	mm	three
Internal gas pressure Internal gas pressure	Pa	��1.33×10��^three
Allowable storage period Storage period	year year	twenty

Mechanical parameters for using circuit breakers

project Project	unit Unit	numerical value Value
contact gap Contact stroke	mm	11±1
Contact stroke of contacts Contact travel	mm	3.5±0.5
Average closing speed Average closing speed	m/s	0.6±0.2
Average opening speed Average opening speed	m/s	1.1±0.2
Rated contact pressure Rated contact pressure	N	2500±200
Contact closing bounce time Contact closing bounce time	ms	��2
Non synchronous closing and opening of contacts Out of simultaneity of contact closing and opening	ms	��2

Glass vacuum arc extinguishing chamber for circuit breaker BD-12/1250-25

[Glass arc extinguishing chamber]BD-12/1250-31.5 Glass vacuum arc extinguishing chamber

2026-6-16 14:37:40

Overview
The glass vacuum arc extinguishing chamber for circuit breaker BD-12/1250-31.5 adopts a medium sealed structure, glass shell, CuCr50 alloy contacts, cup-shaped longitudinal magnetic structure, with the characteristics of large current breaking capacity, high insulation level, strong arc extinguishing ability, long service life, small volume, simple maintenance, no explosion hazard, no pollution, and low noise. The outdoor vacuum circuit breaker assembled with it is used for control and protection in power transmission and distribution systems such as industrial and mining, enterprises, and substations. Product Description

Main technical parameters of glass vacuum arc extinguishing chamber for circuit breaker BD-12/1250-31.5

Parameter name	Unit Unit	Numerical Value
Rated voltage	kV	twelve
Rated normal current	A	one thousand two hundred and fifty
Rated short circuit breaking current	kA	thirty-one point five
Rated short circuit making current	kA	eighty
Rated peak withstand current	kA	eighty
Rated short-time withstand current	kA	thirty-one point five
Rated duration of short circuit	S	four
Rated breaking current of a single capacitor bank Rated single capacitor unit breaking current	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current Rated back to back capacitor unit breaking current	A	four hundred
Rated short-time (1min) power frequency withstand voltage Rated short time power frequency withstand voltage (1min)	kV	forty-two
Circuit resistance under rated contact pressure Circuit resistance at lower limit of rated contact pressure	�̦�	��30
Rated short-circuit breaking current breaking times Rated short circuit breaking current breaking times	time time	thirty
Rated lightning impulse withstand voltage Rated lightning impulse withstand voltage	kV	seventy-five
mechanical life Mechanical endurance	Next time	ten thousand
Closing force due to bellows and atmosphere	N	120±50
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	200±50
Contact wear allowance thickness	mm	three
Internal gas pressure	Pa	��1.33×10��^three
Allow storage period	Year year	twenty

Mechanical parameters for using circuit breakers

Project	Unit Unit	Numerical Value
Contact stroke distance	mm	11±1
Contact travel	mm	3.5±0.5
Average closing speed	m/s	0.6±0.2
Average opening speed	m/s	1.1±0.2
Rated contact pressure	N	3100±200
Contact closing bounce time	ms	��2
Non synchronous closing and opening of contacts Out of simultaneity of contact closing and opening	ms	��2

Glass vacuum arc extinguishing chamber for circuit breaker BD-12/1250-31.5

[Glass arc extinguishing chamber]BD-12/1600-31.5 Glass vacuum arc extinguishing chamber

2026-6-16 14:37:31

Overview
The glass vacuum arc extinguishing chamber for circuit breaker BD-12/1600-31.5 adopts a medium sealed structure, a glass shell, contacts made of CuCr50 alloy material, a cup-shaped longitudinal magnetic structure, and has the characteristics of large current breaking capacity, high insulation level, strong arc extinguishing ability, long service life, small volume, simple maintenance, no explosion hazard, no pollution, and low noise. The outdoor vacuum circuit breaker assembled with it is used for control and protection in power transmission and distribution systems such as industrial and mining, enterprises, and substations. Product Description

Main technical parameters of glass vacuum arc extinguishing chamber for circuit breaker BD-12/1600-31.5

Parameter Name	unit	numerical value
rated voltage	kV	twelve
rated current	A	one thousand and six hundred
Rated short-circuit breaking current	kA	thirty-one point five
Rated short-circuit closing current	kA	eighty
Rated peak withstand current	kA	eighty
Rated short-time withstand current	kA	thirty-one point five
Rated short-circuit duration	S	four
Rated breaking current of a single capacitor bank	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current	A	four hundred
Rated short-time (1min) power frequency withstand voltage	kV	forty-two
Circuit resistance under rated contact pressure	�̦�	��30
Rated short-circuit breaking current breaking times	time	thirty
Rated lightning impulse withstand voltage	kV	seventy-five
mechanical life	time	ten thousand
Contact self closing force	N	120±50
Contact reaction force at rated opening distance	N	200±50
Contact wear allowance	mm	three
Internal gas pressure	Pa	��1.33×10��^three
Allowable storage period	year	twenty

Mechanical parameters for using circuit breakers

project	unit	numerical value
contact gap	mm	11±1
Contact stroke of contacts	mm	3.5±0.5
Average closing speed	m/s	0.6±0.2
Average opening speed	m/s	1.1±0.2
Rated contact pressure	N	3100±200
Contact closing bounce time	ms	��2
Non synchronous closing and opening of contacts	ms	��2

Glass vacuum arc extinguishing chamber for circuit breaker BD-12/1600-31.5

[Glass arc extinguishing chamber]BD-12/2000-40 Glass vacuum arc extinguishing chamber

2026-6-16 14:37:23

Overview
The glass vacuum arc extinguishing chamber used in the BD-12/2000-40 circuit breaker adopts a medium sealed structure, a glass shell, contacts made of CuCr50 alloy material, a cup-shaped longitudinal magnetic structure, and has the characteristics of high current breaking capacity, high insulation level, strong arc extinguishing ability, long service life, small size, simple maintenance, no explosion hazard, no pollution, and low noise. The outdoor vacuum circuit breaker assembled with it is used for control and protection in power transmission and distribution systems such as industrial and mining, enterprises, and substations. Product Description

Main technical parameters of glass vacuum arc extinguishing chamber for circuit breaker BD-12/2000-40

parameter name Parameter name	unit unit	numerical value value
rated voltage Rated voltage	kV	twelve
rated current Rated normal current	A	two thousand
Rated short-circuit breaking current Rated short-circuit breaking current	kA	forty
Rated short-circuit closing current Rated short-circuit making current	kA	one hundred
Rated peak withstand current Rated peak withstand current	kA	one hundred
Rated short-time withstand current Rated short-time withstand current	kA	forty
Rated short-circuit duration Rated duration of short circuit	S	four
Rated breaking current of a single capacitor bank Rated single capacitor unit breaking current	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current Rated back to back capacitor unit breaking current	A	four hundred
Rated short-time (1min) power frequency withstand voltage Rated short time power frequency withstand voltage (1min)	kV	forty-two
Circuit resistance under rated contact pressure Circuit resistance at lower limit of rated contact pressure	�̦�	��25
Rated short-circuit breaking current breaking times Rated short circuit breaking current breaking times	time Time	thirty
Rated lightning impulse withstand voltage Rated lightning impulse withstand voltage	kV	seventy-five
mechanical life Mechanical endurance	time Time	ten thousand
Contact self closing force Closing force due to bellow and atmosphere	N	120±50
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	200±50
Allowable wear thickness of contacts Contact-wear allowance thickness	mm	three
Internal gas pressure Internal gas pressure	Pa	��1.33×10��^three
Allowable storage period Storage period	year Year	twenty

Mechanical parameters for using circuit breakers

project Project	unit Unit	numerical value Value
contact gap Contact stroke	mm	11±1
Contact stroke of contacts Contact travel	mm	3±^one₀
Average closing speed Average closing speed	m/s	0.6±0.2
Average opening speed Average opening speed	m/s	1.1±0.2
Rated contact pressure Rated contact pressure	N	4500±300
Contact closing bounce time Contact closing bounce time	ms	��2
Non synchronous closing and opening of contacts Out of simultaneity of contact closing and opening	ms	��2

Glass vacuum arc extinguishing chamber for circuit breaker BD-12/2000-40

[Glass arc extinguishing chamber]BD-40.5/1250-25 Glass vacuum arc extinguishing chamber

2026-6-16 14:37:14

Overview
The glass vacuum arc extinguishing chamber for circuit breaker BD-40.5/1250-25 adopts a medium sealed structure, glass shell, CuCr50 alloy contacts, cup-shaped longitudinal magnetic structure, with the characteristics of large current breaking capacity, high insulation level, strong arc extinguishing ability, long service life, small volume, simple maintenance, no explosion hazard, no pollution, low noise, etc. The outdoor vacuum circuit breaker assembled with it is used for control and protection in power transmission and distribution systems such as industrial and mining, enterprises, and substations.

Main technical parameters of glass vacuum arc extinguishing chamber for circuit breaker BD-40.5/1250-25

Parameter name	Unit Unit	Numerical Value
Rated voltage	kV	forty point five
Rated normal current	A	one thousand two hundred and fifty
Rated short-circuit breaking current Rated short-circuit breaking current	kA	twenty-five
Rated short circuit making current	kA	fifty
Rated peak withstand current	kA	fifty
Rated short-time withstand current	kA	twenty-five
Rated duration of short circuit	S	four
Rated breaking current of a single capacitor bank Rated single capacitor unit breaking current	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current Rated back to back capacitor unit breaking current	A	four hundred
Rated short-time (1min) power frequency withstand voltage Rated short time power frequency withstand voltage (1min)	kV	ninety-five
Circuit resistance under rated contact pressure Circuit resistance at lower limit of rated contact pressure	�̦�	��30
Rated short-circuit breaking current breaking times Rated short circuit breaking current breaking times	time Time	twenty
Rated lightning impulse withstand voltage Rated lightning impulse withstand voltage	kV	one hundred and eighty-five
Mechanical endurance	Next Time	ten thousand
Contact self closing force Closing force due to bellow and atmosphere	N	250±50
Contact reaction force at rated opening distance Force required to hold contacts open at full stroke	N	330±60
Contact wear allowance thickness	mm	three
Internal gas pressure	Pa	��1.33×10��^three
Allow storage period	Year of Year	twenty

Mechanical parameters for using circuit breakers

Project	Unit Unit	Numerical Value
Contact stroke distance	mm	22±2
Contact travel	mm	8±2
Average closing speed	m/s	0.6±0.2
Average opening speed	m/s	1.4±0.2
Rated contact pressure	N	2900±300
Contact closing bounce time	ms	��2
Non synchronous closing and opening of contacts Out of simultaneity of contact closing and opening	ms	��2

Glass vacuum arc extinguishing chamber for circuit breaker BD-40.5/1250-25

[Glass arc extinguishing chamber]BD-12/2000-31.5 Vacuum arc extinguishing chamber

2026-6-16 14:37:06

Overview:

The BD-12/2000-31.5 vacuum arc extinguishing chamber is a miniaturized product that uses copper chromium contact material, cup-shaped longitudinal magnetic field structure, glass insulation surgery, and a middle sealed fixed shielding cylinder. The product has the characteristics of small size, large breaking capacity, and high pressure resistance. Paired with corresponding indoor and outdoor vacuum circuit breakers, it can be widely used in places where circuits are frequently operated in industrial sectors such as power, machinery, chemical, metallurgical, and mining.

Main technical parameters of BD-12/2000-31.5 vacuum arc extinguishing chamber

parameter item	unit	parameter
rated voltage	kV	twelve
rated current	A	two thousand
rated frequency	Hz	fifty
Short term (1-minute) power frequency withstand voltage	kV	forty-two
Lightning impulse withstand voltage	kV	seventy-five
Rated short-circuit breaking current	kA	thirty-one point five
Rated peak withstand current	kA	eighty
Rated short-circuit closing current	kA	eighty
Rated short-time withstand current	kA	thirty-one point five
Rated short-circuit duration	S	four
Rated breaking current of a single capacitor bank	A	six hundred and thirty
Rated back-to-back capacitor bank breaking current	A	four hundred
Rated operating sequence		Fen-0.3 (0.5) S-HeFen-180S-HeFen
Rated short-circuit breaking current breaking times	time	thirty
mechanical life	time	ten thousand
Contact self closing force	N	200±60
Contact reaction force	N	300±60
Circuit resistance at lower limit of rated contact pressure	u��	��25
Thickness of allowable wear of contacts	mm	three
Gas pressure inside the vacuum arc extinguishing chamber	Pa	��1×10
Quality of the sports section	kg	two point one
Quality of vacuum arc extinguishing chamber	kg	five point three

[Glass arc extinguishing chamber]BD11-12/630-20A Vacuum arc extinguishing chamber

2026-6-16 14:36:57

BD11-12/630-20A vacuum arc extinguishing chamber:
Outline dimension diagram

parameter name	parameter value	unit
rated voltage	twelve	kV
rated current	six hundred and thirty	A
rated frequency	fifty	Hz
Short term (1-minute) power frequency withstand voltage	forty-two	kV
Lightning impulse withstand voltage	seventy-five	kV
Rated short-circuit breaking current	twenty	kA
Rated peak withstand current	fifty	kA
Rated short-circuit closing current	fifty	kA
Rated short-time withstand current	twenty	kA
Rated short-circuit duration	four	s
Rated breaking current of a single capacitor bank	six hundred and thirty	A
Rated back-to-back capacitor bank breaking current	four hundred	A
Rated operating sequence	O-0.3(0.5)s-CO-180s-CO
Rated short-circuit breaking current times	fifty	time
mechanical life	ten thousand	time
Contact self closing force	100±50	N
Contact reaction force at rated opening distance	200±50	N
Circuit resistance at lower limit of rated contact pressure	thirty	�̦�
Allowable wear thickness of contacts	three	mm
Gas pressure inside the vacuum arc extinguishing chamber	zero point zero zero one	Pa
Quality of the sports section	one point one	kg
Quality of vacuum arc extinguishing chamber	three point five	kg
contact gap	11±1	mm
Average opening speed	1.1±0.3	m/s
Average closing speed	0.6±0.2	m/s
Rated contact pressure	2000±200	N
Contact closing bounce time	two	ms
Non synchronous closing and opening of contacts	two	ms
Rebound amplitude of the opening contact	two	mm
outer diameter	one hundred	mm
installation height	two hundred and twenty-five	mm
appearance	Mid sealed style

[Glass arc extinguishing chamber]ZKBD-1250/12-31.5 type vacuum switch tube

2026-6-16 14:36:47

purpose
The ZKBD vacuum switch tube uses oxidized glass as the insulating shell and high vacuum as the medium inside the tube. Therefore, it has a small volume, high voltage resistance, strong breaking ability, long service life, and does not require maintenance of the contacts. Especially due to its advantages of not exposing the arc and being safe and reliable, it is widely used in industries such as coal, electricity, chemical, metallurgical, textile, and high-rise buildings.

This product, equipped with a suitable operating mechanism, can be assembled into an AC high-voltage circuit breaker, used as a distribution device in three-phase AC power generation and supply systems, and as a centralized control device for electric motors.

Technical parameters of ZKBD-1250/12-31.5 vacuum switch tube

Rated voltage 12KV	Rated peak withstand current 80KA	Contact resistance under rated contact pressure �� 30 ��
Rated working current 1250, 1600A	Rated power frequency withstand voltage 42KV	The allowable wear thickness of the contact is 3mm
Rated short-circuit breaking current 25, 31.5KA	Rated short-time withstand current 31.5KA	Storage period of 20 years
Rated current breaking times 30 times	Rated short-time withstand time 4S	Equipped with circuit breaker ZN28-12 type
Rated impulse withstand voltage 75KV	Contact self closing force 190 ± 40N
Rated short-circuit closing current 80KA	Contact reaction force at rated torque of 240 ± 40N

External dimensions and installation dimensions:

[Glass arc extinguishing chamber]ZKBD-1250/12-25 type vacuum switch tube

2026-6-16 14:36:39

Purpose:
The ZKBD vacuum switch tube uses oxidized glass as the insulating shell and high vacuum as the medium inside the tube. Therefore, it has a small volume, high voltage resistance, strong breaking ability, long service life, and does not require maintenance of the contacts. Especially due to its advantages of not exposing the arc and being safe and reliable, it is widely used in industries such as coal, electricity, chemical, metallurgical, textile, and high-rise buildings.

The ZKBD-1250/12-25 vacuum switch tube, equipped with a suitable operating mechanism, can be assembled into an AC high-voltage circuit breaker and used as a distribution device in three-phase AC power generation and supply systems, as well as a centralized control device for electric motors.

Technical parameters of ZKBD-1250/12-25 vacuum switch tube

Rated voltage 12KV	Rated peak withstand current 80KA	Contact resistance under rated contact pressure �� 30 ��
Rated working current 1250, 1600A	Rated power frequency withstand voltage 42KV	The allowable wear thickness of the contact is 3mm
Rated short-circuit breaking current 25, 31.5KA	Rated short-time withstand current 31.5KA	Storage period of 20 years
Rated current breaking times 30 times	Rated short-time withstand time 4S	Equipped with circuit breaker ZN28-12 type
Rated impulse withstand voltage 75KV	Contact self closing force 190 ± 40N
Rated short-circuit closing current 80KA	Contact reaction force at rated torque of 240 ± 40N

External dimensions and installation dimensions

ZKBD-1250/12-25 vacuum switch tube

[Glass arc extinguishing chamber]ZKBD-630/12-20 type vacuum switch tube

2026-6-16 14:36:30

purpose
The ZKBD vacuum switch tube uses oxidized glass as the insulating shell and high vacuum as the medium inside the tube. Therefore, it has a small volume, high voltage resistance, strong breaking ability, long service life, and does not require maintenance of the contacts. Especially due to its advantages of not exposing the arc and being safe and reliable, it is widely used in industries such as coal, electricity, chemical, metallurgical, textile, and high-rise buildings.
This product, equipped with a suitable operating mechanism, can be assembled into an AC high-voltage circuit breaker, used as a distribution device in three-phase AC power generation and supply systems, and as a centralized control device for electric motors.

technical parameters

Rated voltage 12KV	Rated peak withstand current 80KA	Contact resistance under rated contact pressure �� 30 ��
Rated working current 1250, 1600A	Rated power frequency withstand voltage 42KV	The allowable wear thickness of the contact is 3mm
Rated short-circuit breaking current 25, 31.5KA	Rated short-time withstand current 31.5KA	Storage period of 20 years
Rated current breaking times 30 times	Rated short-time withstand time 4S	Equipped with circuit breaker ZN28-12 type
Rated impulse withstand voltage 75KV	Contact self closing force 190 ± 40N
Rated short-circuit closing current 80KA	Contact reaction force at rated torque of 240 ± 40N

External dimensions and installation dimensions

ZKBD-630/12-20 vacuum switch tube

[Glass arc extinguishing chamber]ZKBDW-630/12-20 type vacuum switch tube

2026-6-16 14:36:22

purpose
The ZKTD vacuum switch tube adopts high alumina glass as the insulation shell, and is covered with high-strength corrugated insulation material on the outside. The tube uses high vacuum as the medium, so it has a small volume, high voltage resistance, strong breaking ability, long service life, and does not require maintenance of the contacts. Especially due to its advantages of not exposing the arc and being safe and reliable, it is widely used in industries such as coal, electricity, chemical, metallurgy, textile, and high-rise buildings.

The ZKBDW-630/12-20 vacuum switch tube, equipped with a suitable operating mechanism, can be assembled into an AC high-voltage circuit breaker and used as a distribution and motor centralized control device in three-phase AC power generation and supply systems.

Technical parameters of ZKBDW-630/12-20 vacuum switch tube

Rated voltage 10KV	Rated short-time withstand current 20KA
Rated working current 630A	Rated short-time withstand time 4S
Rated short-circuit breaking current 20KA	Contact self closing force 190 ± 40N
Rated current breaking times 30 times	Contact reaction force at rated torque of 240 ± 40N
Rated impulse withstand voltage 75KV	Contact resistance under rated contact pressure �� 30 ��
Rated short-circuit closing current 50KA (peak)	The allowable wear thickness of the contact is 3mm
Rated peak withstand current 50KA	Storage period of 20 years
Rated power frequency withstand voltage 42KV	Equipped with circuit breaker ZW8-12 type

ZKBDW-630/12-20 vacuum switch tube external dimensions and installation dimensions

[Glass arc extinguishing chamber]BD-12/3150-40 Vacuum arc extinguishing chamber

2026-6-16 14:36:13

Vacuum arc extinguishing chamber for BD-12/3150-40 circuit breaker