Shanghai Huabang Industrial Business Network - Indoor isolation switch

[Indoor isolation switch]GN24-12DC/400A-1250A Indoor AC High Voltage Isolation Switch

2026-6-19 15:13:25

GN24-12DC/400A-1250A Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN27-40.5D/630A Indoor AC High Voltage Isolation Switch

2026-6-19 15:12:53

GN27-40.5D/630A Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN30-12D/630A-3150A Indoor AC high voltage isolation switch

2026-6-19 14:47:38

GN30-12D/630A-3150A Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN2-40.5-630-2000A Single pole indoor AC high voltage isolation switch

2026-6-19 14:47:19

GN2-40.5-630-2000A Single pole Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN27-40.5/2500A Indoor AC high voltage isolation switch

2026-6-19 14:46:54

GN27-40.5/2500A Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN22-12D/2000A-3150A Indoor AC High Voltage Isolation Switch

2026-6-19 14:46:28

GN22-12D/2000A-3150A Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN24-12/630A Type Four Phase Indoor AC High Voltage Isolation Switch

2026-6-19 14:46:14

GN24-12/630A Four Phase Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN22-24 Indoor AC High Voltage Isolation Switch

2026-6-19 14:46:07

GN22-24 Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN19-12/400A-2000A series single pole indoor AC high voltage isolation switch

2026-6-19 14:45:49

GN19-12/400A-2000A series single pole indoor AC high voltage isolation switch

[Indoor isolation switch]GN10-24/5000A type indoor high-voltage isolation switch

2026-6-19 14:45:41

GN10-24/5000A indoor high-voltage isolation switch

[Indoor isolation switch]GN10-20/2000A-6300A series indoor high-voltage isolation switch

2026-6-19 14:45:33

GN10-20/2000A-6300A series indoor high-voltage isolation switch

[Indoor isolation switch]GN19-S series 40.5kV indoor high-voltage isolation switch

2026-6-19 14:45:24

model	System constant voltage kV	rated current A	4s thermal stability current kA	Dynamic stable current kA	main circuit resistance �� (not greater than)	Creepage distance ratio cm/kV	mechanical life time	Lightning impulse withstand voltage kV		1-minute power frequency withstand voltage
								To the ground, alternating with each other	fracture	To the ground, alternating with each other	fracture
GN19-40.5/630	thirty-five	six hundred and thirty	twenty	fifty	seventy	twenty	two thousand	one hundred and eighty-five	two hundred and fifteen	ninety-five	one hundred and fifteen
GN19-40.5/1250		one thousand two hundred and fifty	thirty-one point five	eighty	forty
GN19-40.5��W��/S2000-50		two thousand	fifty	one hundred and twenty-five	twenty-five
GN19-40.5��W��/S3150-50		three thousand one hundred and fifty			one

GN19-S series 40.5kV indoor high-voltage isolation switch

[Indoor isolation switch]C79-400/3.3 Isolation reversing switch

2026-6-19 14:45:15

C79-400/3.3 isolation reversing switch

[Indoor isolation switch]C79-700/3.3 Isolation reversing switch

2026-6-19 14:45:07

C79-700/3.3 isolation reversing switch

[Indoor isolation switch]GNF38-32KV series indoor high-voltage isolation switch

2026-6-19 14:44:59

The GNF38-32KV series indoor isolation switch is designed and manufactured to meet the needs of the development of fixed high-voltage cabinets and ring main units towards compactness and miniaturization. It has a three station structure and a fully insulated bottom plate; And equipped with coaxial locking and a complete mechanical interlocking mechanism, the appearance is compact and small. It is the best optional switch for compact box type switchgear.

5�� Main structural characteristics of GNF38-32KV series indoor high-voltage isolation switch
Adopting the busbar through wall integral insulation bottom plate (APG process), the external insulation creepage distance can reach 24mm/kV, and the insulation performance is good.
The single break point and three station structure ensure that the isolation switch cannot be grounded when closed and cannot be closed when grounded.
Equipped with coaxial manual operation mechanism and position positioning device.

6�� Environmental conditions for the use of GNF38-32KV series indoor high-voltage isolating switches
a. Surrounding air temperature: upper limit+40 �� lower limit -25 ��
b. Altitude below 2000m
c. Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%
d. The surrounding air should not be significantly polluted by corrosive or flammable gases, water vapor, etc
e. No frequent severe vibrations

GNF38-32KV series indoor high-voltage isolation switch

[Indoor isolation switch]GN2-10 series indoor high-voltage isolation switch

2026-6-19 14:44:50

Product Description
The GN2-12 series indoor AC high voltage isolation switch is a three-phase AC 50Hz high voltage switchgear used in power systems with a rated voltage of 10-35kV, for opening and closing circuits under voltage and no-load conditions. The isolation switch is equipped with CS6-2 manual operating mechanism.
This series of isolation switches is a three-phase linkage type, consisting of a base frame, a shaft and linkage plate, post insulators, conductive switches, and static contacts. The shaft is mounted on the chassis, and a linkage plate is welded to the shaft. It is connected to the switch blade through a pull rod insulator (GN2-40.5T type epoxy glass cloth board insulation rod). The two ends of the rotating shaft extend from the chassis, and either end can be connected to the operating mechanism for opening and closing. This series of isolation switches can be installed horizontally, vertically, or diagonally.
structure

The GN2 indoor three-phase high voltage isolation switch consists of a base, pillar porcelain insulators, operating porcelain insulators, and conductive parts.

Basic Parameters

[Indoor isolation switch]GN2-35T Indoor high voltage isolation switch

2026-6-19 14:44:42

The GN2-10-35 series indoor high-voltage isolation switch is a three-phase AC 50Hz high-voltage switchgear used in power systems with a rated voltage of 10-35kV, for opening and closing circuits under no-load voltage conditions.
Isolation switches with a rated current of 2000A and below are equipped with CS6-2T type manual operating mechanisms, while isolation switches with a rated current of 3000A are equipped with CS7 type manual operating mechanisms.

Main technical parameters of GN2-35T indoor high-voltage isolation switch

Project	unit	Data
rated voltage	KV	ten	twenty	thirty-five
rated current	A	1000, 2000, 3000	four hundred	400, 600, 1000
Rated peak withstand current	KA	80, 85, 100	fifty	52, 64, 70
Rated short-time withstand current	KA	40, 51, 70	fourteen	14. 25, 27.5
Rated short-time duration	S	five

Installation dimensions of GN2-35T indoor high-voltage isolation switch

[Indoor isolation switch]GN27-40.5C/630A-2000A series indoor high-voltage isolation switch

2026-6-19 14:44:34

GN27-40.5C/630A-2000A series indoor high-voltage isolation switch

[Indoor isolation switch]GN10-10~20/4000A-9000A Indoor high voltage isolation switch

2026-6-19 14:44:26

GN10-10-20/4000A-9000A indoor high-voltage isolation switch

[Indoor isolation switch]GN22-12/8000A Indoor high voltage isolation switch

2026-6-19 14:44:17

GN22-12/8000A Indoor High Voltage Isolation Switch

[Indoor isolation switch]GN22-12/6300A Indoor high voltage isolation switch

2026-6-19 14:44:08

GN22-12/6300A Indoor High Voltage Isolation Switch

[Indoor isolation switch]GN22-12C/2000A-4000A Indoor high voltage isolation switch

2026-6-19 14:44:00

GN22-12C/2000A-4000A Indoor High Voltage Isolation Switch

[Indoor isolation switch]GN22-12/2000A-5000A High voltage isolation switch

2026-6-19 14:43:51

GN22-12/2000A-5000A High Voltage Isolation Switch

[Indoor isolation switch]GN16-12/400A-1250A Indoor high voltage isolation switch

2026-6-19 14:43:43

GN16-12/400A-1250A Indoor High Voltage Isolation Switch

[Indoor isolation switch]GN15-12/400A-1250A Indoor high voltage isolation switch

2026-6-19 14:43:34

GN15-12/400A-1250A Indoor High Voltage Isolation Switch

[Indoor isolation switch]GN19-12CST/400A-1250A Indoor high voltage isolation switch

2026-6-19 14:43:26

GN19-12CST/400A-1250A indoor high-voltage isolation switch

[Indoor isolation switch]GN19-12ST/400A-1250A Indoor high voltage isolation switch

2026-6-19 14:43:18

GN19-12ST/400A-1250A indoor isolation switch

[Indoor isolation switch]GN28-12 series indoor high-voltage combination isolation switch

2026-6-19 14:43:10

The GN28-12 series indoor high-voltage combination isolation switch (hereinafter referred to as the isolation switch) is an indoor device with a rated voltage of 12kV three-phase AC 50Hz. Used for voltage and no-load division circuits. Suitable for XGN1 type box cabinet.

Terms of Use

a. The ambient temperature is not higher than+40 �� and not lower than -10 ��
b. The monthly average relative humidity should not exceed 90%
c. Altitude not exceeding 1000m

Structure and Characteristics
GN28-12 type isolation switch is a combination type, consisting of two types: denominator knife isolation switch and line side isolation switch, mainly composed of contacts, contact knives, insulation components, and frames. The busbar isolation switch, line isolation switch, bypass isolation switch, and one set of grounding knife switches on each side of the switch are assembled on a frame, which not only reduces the volume, but also facilitates the installation of the entire set, eliminating the workload of operators hanging and dismantling grounding wires, as well as personal and equipment accidents caused by improper hanging and dismantling of grounding wires. The isolation switch is equipped with a rotating fully mechanical locking mechanism, which has the characteristics of easy and flexible operation, and reliable five prevention functions.

[Indoor isolation switch]GN24-12D type high voltage isolation switch

2026-6-19 14:43:01

Overview of GN24-1D High Voltage Isolation Switch

Environmental conditions for use

1000m altitude
Surrounding air temperature: -30 ��~+40 ��;
Relative humidity of the surrounding environment: daily average not exceeding 95%, monthly average not exceeding 90%;
No severe vibration oscillation impact site;
A place without fire, explosion, corrosive metal, toxic gases that damage insulation, and conductive dust;

GN24-1D High Voltage Isolation Switch Model and Meaning

GN24-1D High Voltage Isolation Switch Appearance and Installation Dimensions

Figure 1, GN24-12 (D) type

Figure 2, GN24-1D (C) type

Figure 3: GN24-1D Type II

Figure 4: GN24-1D (C) Type II

GN24-1D High Voltage Isolation Switch

[Indoor isolation switch]GN38-10 series high-voltage isolating switch

2026-6-19 14:42:53

GN38 lower isolation switch

Lower isolation coaxial right operation three workstations
Manual integrated mechanism
(Capable of grounding and closing)
structural characteristics

1. The isolation switch and grounding switch are integrated into one unit
2. Grounding switch equipment related to short-circuit current capability
3. Isolation and grounding switches have complete mechanical locking
4. The outgoing terminal adopts side installation
5. The height of the cable outlet is effectively guaranteed

[Indoor isolation switch]GN38-10 series high-voltage isolating switch

2026-6-19 14:42:45

GN38-10 series high voltage isolation switch

structural characteristics
The GN38-10 series high-voltage isolating switch adopts a busbar through wall insulation bottom plate, which completely isolates the switchgear busbar room from the circuit breaker room
2. Equipped with a cross axis manual integrated operating mechanism, which not only ensures the mechanical performance of the isolation switch, but also reduces the operating height for convenient operation
3. Single breakpoint three station structure ensures reliable switch operation
GN38-10 series high-voltage isolating switch is equipped with a complete mechanical interlocking device

Coaxial "refers to the transmission main shaft and the operating mechanism shaft being the same shaft
'Off axis' refers to the fact that the main transmission shaft and the operating mechanism shaft are two separate axes, with connecting rods or gears used for transmission in the middle
Integrated mechanism "refers to the combination of isolation switch and operating mechanism, whose external dimensions, installation method, and performance indicators are carefully calibrated before the product leaves the factory.

[Indoor isolation switch]GN24 series isolating switch

2026-6-19 14:42:36

GN24 series isolation switch

GN24-10D/400A
GN24-10DC/400A
GN24-10D/630A
GN24-10DC/630A
GN24-10D/1000A
GN24-10DC/1000A
GN24-10D/1250A
GN24-10DC/1250A

The GN24-10D series indoor high-voltage isolating switch with grounding knife (hereinafter referred to as the isolating switch) is an indoor high-voltage switchgear with a rated voltage of 12KV or below and three-phase AC 50Hz. It is used for breaking and closing circuits in power systems with voltage and no load. The GN24-10D series isolating switch has three working positions: closing, opening, and grounding, and can be operated step by step. It has the anti misoperation performance of preventing live hanging grounding wires and closing with grounding. It is a necessary component to meet the requirements of "three defenses". The grounding contact knife can be used for: when electrical equipment is powered off for maintenance, the semi grounding contact knife can be closed to create a network artificial short circuit, ensuring that maintenance personnel receive reliable "ground potential" protection.

model

rated voltage

rated current

4S thermal stability current

GN24-12D

GN24-12DC

12kV

400A
630A
1000A
1250A
2000A

20kA

31.5kA

[Indoor isolation switch]RH-B series high-voltage isolating switch

2026-6-19 14:42:28

Technical parameters of RH-B series high-voltage isolation switch

Model number	rated voltage	rated current	4S thermal stability current	Dynamic stable voltage	Dynamic stable voltage	Impact withstand voltage
Model number	rated voltage	rated current	4S thermal stability current	Dynamic stable voltage	relatively	Fracture gate	relatively	Fracture gate
RH-B	eleven	forty-four	twelve thousand and five hundred	thirty-one thousand and five hundred	seventy-five	ninety-five	38	forty-two
RH-B	thirty-three	six hundred	twelve thousand and five hundred	thirty-one thousand and five hundred	one hundred and seventy	one hundred and ninety-five	seventy	eighty

RH-B series high-voltage isolation switch

[Indoor isolation switch]GN5 Indoor single-phase high voltage isolation switch

2026-6-19 14:42:20

The GN5 indoor single-phase high voltage isolation switch consists of a base, pillar porcelain insulators, and conductive parts.

Basic parameters of GN5 indoor single-phase high voltage isolation switch

model	Product Code	Rated voltage kV	Maximum working voltage KV	Rated current A	Dynamic stability current KA (peak value)	5-second thermal stability current KA (effective value)	Weight kg
GN5-6/200	seven thousand one hundred and thirty-two	six	six point nine	two hundred	twenty-five point five	ten	four
GN5-6/400	seven thousand one hundred and thirty-three	six	six point nine	four hundred	fifty-two	fourteen	four point five
GN5-6/630	seven thousand one hundred and thirty-four	six	six point nine	six hundred and thirty	fifty-two	twenty	five
GN5-10/200	seven thousand one hundred and thirty-four	ten	eleven point five	two hundred	twenty-five point five	ten	six
GN5-10/400	seven thousand one hundred and thirty-five	ten	eleven point five	four hundred	fifty-two	fourteen	six point five
GN5-10/630	seven thousand one hundred and thirty-seven	ten	eleven point five	six hundred and thirty	fifty-two	twenty	seven
GN5-10/1250	seven thousand one hundred and forty-one	ten	eleven point five	one thousand two hundred and fifty	seventy-five	thirty	seventeen

Appearance and installation dimensions of GN5 indoor single-phase high voltage isolation switch

model	Factory code	Rated voltage kV	Rated current A	Main dimensions (mm)
model	Factory code	Rated voltage kV	Rated current A	H	h	h1	t
GN5-6/200	seven thousand one hundred and thirty-two	six	two hundred	four hundred and twenty	two hundred and twenty	one hundred and thirty-one	six
GN5-6/400	seven thousand one hundred and thirty-three	six	four hundred	four hundred and twenty-five	two hundred and twenty-five	one hundred and thirty-one	eight
GN5-6/630	seven thousand one hundred and thirty-four	six	six hundred and thirty	four hundred and thirty	two hundred and thirty	one hundred and thirty-one	twelve
GN5-10/200	seven thousand one hundred and thirty-five	ten	two hundred	four hundred and forty	two hundred and forty	one hundred and fifty	six
GN5-10/400	seven thousand one hundred and thirty-six	ten	four hundred	four hundred and forty-five	two hundred and forty-five	one hundred and fifty	eight
GN5-10/630	seven thousand one hundred and thirty-seven	ten	six hundred and thirty	four hundred and fifty	two hundred and fifty	one hundred and fifty	twelve

GN5 indoor single-phase high voltage isolation switch

[Indoor isolation switch]GN2-40.5(W) type indoor high-voltage isolation switch

2026-6-19 14:42:11

model	Rated voltage/kV	Rated current/A	Dynamic stability current (peak value)/kV	Thermal stability current (effective value)/kA
model	Rated voltage/kV	Rated current/A	Dynamic stability current (peak value)/kV	10s	6s
GN2-12/2000	twelve	two thousand	eighty	thirty-six
GN2-12/3000	twelve	three thousand	one hundred	fifty
GN2-20/400	twenty	four hundred	fifty	ten
GN2-40.5/400	forty point five	four hundred	fifty	twenty
GN2-40.5/400	forty point five	four hundred	fifty	ten
GN2-40.5/400 (all operating conditions)	forty point five	four hundred	fifty	ten
GN2-40.5/630	forty point five	six hundred and thirty	fifty	twenty
GN2-40.5/630	forty point five	six hundred and thirty	fifty	fourteen
GN2-40.5/630 (all operating conditions)	forty point five	six hundred and thirty	fifty	fourteen
GN2-40.5/2000	forty point five	one thousand	eighty	thirty-one point five
GN2-40.5/2000	forty point five	two thousand	eighty-five	thirty-six
GN2-40.5/2000 (all operating conditions)	forty point five	two thousand	eighty-five	thirty-six
GN2-40.5/630-��	forty point five	six hundred and thirty	forty		sixteen
GN2-40.5/630-��	forty point five	six hundred and thirty	forty		sixteen
GN2-40.5/1250-��	forty point five	one thousand two hundred and fifty	seventy		twenty-five
GN2-40.5/1250-��	forty point five	one thousand two hundred and fifty	seventy		twenty-five

GN2-40.5 (W) type indoor high-voltage isolation switch

[Indoor isolation switch]GNF38-12/630A type indoor ring main unit isolation switch

2026-6-19 14:42:03

The LZFW-35GY current transformer adopts our company's unique technology, which integrates outdoor epoxy resin and silicone rubber into a composite insulation form. It is not a general form of silicone rubber umbrella sheet bonding, and the overall product is firm. It belongs to the new generation of outdoor products. Widely used in outdoor or indoor power systems with a rated frequency of 50 Hz and a rated voltage of 35 kV or below, it is also used for metering, measurement, and monitoring protection.

Characteristics of GNF38-12/630A indoor ring main unit isolation switch
1. This product is made of outdoor epoxy resin, and the non winding part is coated with silicone rubber and fully vacuum cast. It is a fully enclosed insulation and pillar structure. The product fully combines the advantages of good processability and strong heat dissipation performance of outdoor epoxy resin with the strong UV resistance, good water addition, anti fog flash and anti pollution flash ability of silicone rubber, while complementing each other's shortcomings, to achieve good internal and external insulation performance. The product has anti fog and anti humidity, anti pollution flash, excellent resistance to cold and hot shock, good environmental adaptability, strong hydrophobicity and anti UV linear ability, anti-aging and arc resistance, long service life, and can fully meet outdoor use conditions.
2. The product adopts a ring-shaped ultra microcrystalline alloy iron core and imported high-quality silicon steel sheet coil iron core. Has high metrological accuracy, stable error, and low instrument security factor; Stable protection level performance and high accuracy limit coefficient. The transformer has the characteristics of low power consumption and minimal residual magnetism.
3. According to user requirements, production can be done in various ratios and multi-level combinations. Beneficial for power station expansion and effectively saving investment.
4. The product can be installed independently or used in conjunction with outdoor circuit breakers and other outdoor equipment. It has the characteristics of easy installation and replacement, and maintenance free use.

Usage conditions for GNF38-12/630A indoor ring main unit isolation switch
Fully meet the high-altitude outdoor product usage conditions specified in IEC185-87 and GB1208-1997, as well as the requirements of Level II pollution prevention level.

Basic technical parameters of GNF38-12/630A indoor ring main unit isolation switch
1. Rated voltage 35 kV
2. Rated altitude �� 4000 meters
3. Rated insulation level 40.5/95/185 kV
4. Rated primary current 20-3000 A
5. Rated secondary current 5A or 1A
6. Partial discharge capacity in accordance with GB1208-1997 standard, apparent discharge capacity �� 20 pC
7. Dynamic thermal stability current: 1 second thermal current=110 I1n; Dynamic stability current=2.5 Ith
8. Rated primary current, level combination, and corresponding rated output relationship Rated primary current

Overview

The GNF38-12KV series indoor ring main unit isolation switch is designed and manufactured to meet the needs of the development of fixed high-voltage cabinets and ring main units towards compactness and miniaturization. It has a three station structure and a fully insulated bottom plate; And equipped with coaxial locking and a complete mechanical interlocking mechanism, the appearance is compact and small. It is the best optional switch for compact box type switchgear.

Switch model and meaning

Reference standards

GB1985-1989 AC High Voltage Disconnectors and Grounding Switches
IEC129-84 AC isolating switches and grounding switches

Normal usage conditions

a. Surrounding air temperature: upper limit+40 �� lower limit -25 ��
b. Altitude not exceeding 2000m
c. Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%
d. The surrounding air should not be significantly polluted by corrosive or flammable gases, water vapor, etc
e. No frequent severe vibrations

Main technology of GNF38-12/630A indoor ring main unit isolation switch

Main structural features

Adopting busbar through wall integral insulation bottom plate (APG process), the external insulation creepage distance can reach 24MM/kV, and the insulation performance is good.
The single break point and three station structure ensure that the isolation switch cannot be grounded when closed and cannot be closed when grounded.
Equipped with coaxial manual operation mechanism and position positioning device.

Installation and debugging

After opening the box, the product should be checked for any damage or rust, the product nameplate and certificate of conformity should match the purchase order, and the packing list should match the actual product and be in good condition.
Clean the surface of dust and dirt.
Check if the screws at the main connecting parts of the switch are loose. If so, tighten and adjust them.
Apply industrial Vaseline oil to the mechanical friction parts.
According to the position of the high-voltage cabinet and the ring main unit, installation is required, and attention should be paid to the insulation distance between the live part and the ground when the switch is opened, which should be greater than 125cm.
After the switch is installed, it should be operated without load 3-5 times, and the opening, closing, and grounding signs should be checked to ensure that they match the corresponding operation. There should be no abnormal phenomena such as jamming during operation.
The pressure of the contact spring between the moving and stationary contacts has been adjusted before leaving the factory, and users do not need to adjust it again.
The connection between the switch and the busbar must have good contact and be securely fixed.

Usage and Maintenance

The opening, closing, and grounding positions of the switch are determined and locked, and the mechanical interlocking action is performed. The identification of each position is completed by the operating mechanism.
Before operation, it is necessary to check whether the mechanism is safe and reliable.
First, turn the wrench on the panel towards the operating axis, then release it. Insert the handle and rotate it in the direction indicated by the arrow on the panel. Once the operation is in place, the wrench on the panel will automatically return to its original position. Repeat the above steps when operating again.
When the operating mechanism leaves the factory, its internal sliding parts are coated with lubricating grease. If the user finds any obstruction during operation, they can open the front cover and apply lubricating grease to the sliding parts.
The maintenance of the switch is not carried out with electricity, and it is not allowed to pull the switch with load.
During maintenance, the fixing screws of the insulation base and insulation support, the spring compression of the moving contact knife, the shaft retaining ring on the connecting pin between the insulation rod and the insulation crank arm, and the opening on the connecting pin between the insulation rod and the moving contact knife should be carefully inspected. If there are any abnormalities, they should be adjusted and maintained in a timely manner.
When the contact positions of the static contact and the moving contact blade are found to be burnt or blackened during maintenance, it is not allowed to use a file to lower the contact points. Only sandpaper can be used to polish them, and then industrial Vaseline grease can be applied.
During maintenance, attention should be paid to observing the deformation of the clamping spring of the moving contact blade. If there is any deformation, it should be adjusted or replaced in a timely manner.

Appearance and installation dimensions

Installation method

GNF38-12/630A type indoor ring main unit isolation switch

Rated primary current ��A��	Accurate level combination	Rated secondary output (VA)
		0.2��0.2S��	zero point five	10P10	10P20
20~600	0.2��0.2S��/10P	fifteen	---	fifty	twenty-five
	0.5/10P	---	twenty-five
	10P/10P	---	---
	0.2 (or 0.2S)/0.5/10P	fifteen	twenty-five	forty	twenty
	0.2 (or 0.2S)/10P/10P

[Indoor isolation switch]DGN-12 type indoor high-voltage isolation switch

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name	unit	parameter
rated voltage	kV	twelve
rated frequency	Hz	fifty
rated current	A	630, 1250
Rated short-time withstand current	kA	20. 31.5
Rated peak withstand current	kA	50, 80
Rated short-time continuous current	S	four
Rated insulation level 1-minute power frequency withstand voltage Lightning impulse withstand voltage (peak value)	kV kV	forty-two seventy-five

DGN-12 indoor high-voltage isolation switch

[Indoor isolation switch]GN19-35 series high-voltage isolating switch

2026-6-19 14:41:46

GN19-35 series high voltage isolation switch

[Indoor isolation switch]DGN-12D series high-voltage isolating switch

2026-6-19 14:41:38

DGN-12D series high-voltage isolation switch

[Indoor isolation switch]GN36-12 series high-voltage isolating switch

2026-6-19 14:41:30

GN36-12 series high-voltage isolation switch

[Indoor isolation switch]GN24-10(C) series high-voltage isolating switch

2026-6-19 14:41:21

GN24-10 (C) series high-voltage isolating switch

[Indoor isolation switch]GN16-35/2000 High voltage and high current isolation switch

2026-6-19 14:41:13

GN16-35/2000 High Voltage and High Current Isolation Switch

[Indoor isolation switch]GN19 Indoor three-phase high voltage isolation switch

2026-6-19 14:41:04

The GN19-10 indoor three-phase high voltage isolation switch consists of a base, pillar porcelain insulators, operating porcelain insulators, and conductive parts.
The GN19-10C indoor three-phase high voltage isolation switch consists of a base, a pair of ceramic insulators, a ceramic sleeve, an operating ceramic insulator, and a conductive part.

model	rated voltage kv	Maximum operating voltage kv	rated current A	Dynamic stable current KV (peak value)	10s thermal stability current KA (effective value)	weight kg
GN19-10/400	ten	eleven point five	four hundred	thirty-one point five	twelve point five	twenty-seven
GN19-10/630	ten	eleven point five	six hundred and thirty	fifty	twenty	twenty-eight
GN19-10/1250	ten	eleven point five	one thousand two hundred and fifty	one hundred	forty	fifty-two
GN19-10C1/400	ten	eleven point five	four hundred	thirty-one point five	twelve point five	thirty-nine
GN19-10C1/630	ten	eleven point five	six hundred and thirty	fifty	twenty	forty
GN19-10C1/1250	ten	eleven point five	one thousand two hundred and fifty	one hundred	forty	seventy
GN19-10C2/400	ten	eleven point five	four hundred	thirty-one point five	twelve point five	thirty-nine
GN19-10C2/630	ten	eleven point five	six hundred and thirty	fifty	twenty	forty
GN19-10C2/1250	ten	eleven point five	one thousand two hundred and fifty	one hundred	forty	seventy
GN19-10/1000	ten	eleven point five	one thousand	eighty	thirty-one point five	forty-nine
GN19-10C1/1000	ten	eleven point five	one thousand	eighty	thirty-one point five	sixty-five

GN19 indoor three-phase high voltage isolation switch

[Indoor isolation switch]GN10 Type Indoor Single (Three) Phase High Voltage Isolation Switch

2026-6-19 14:40:56

The GN10 indoor single-phase high voltage isolation switch consists of a base, pillar porcelain insulators, operating porcelain insulators, and conductive parts. Can be used for single-phase or three-phase connection. Can be operated with manual or electric mechanisms.

model	rated Voltage KV	It's a senior engineer Operating voltage KV	Rated current A	Dynamic stability current KA (Peak value)	10s thermal stability current KA (Effective value)	Main dimensions (mm)		Weight kg
model	rated Voltage KV	It's a senior engineer Operating voltage KV	Rated current A	Dynamic stability current KA (Peak value)	10s thermal stability current KA (Effective value)	H	h	Weight kg
GN10-10/3000	ten	twelve	three thousand	one hundred and sixty	70-5	six hundred and forty-five	three hundred and eighty-five	��54
GN10-10/4000	ten	twelve	four thousand	one hundred and sixty	85-5	seven hundred	four hundred and twenty	��60
GN10-10/5000	ten	twelve	five thousand	two hundred and twenty-four	74-10	-	-	��135
GN10-10/6000	ten	twelve	six thousand	two hundred and twenty-four	74-10	-	-	��145
GN10-20/3000	twenty	twenty-four	three thousand	one hundred and sixty	70-5	eight hundred and ten	four hundred and sixty	��77
GN10-20/4000	twenty	twenty-four	four thousand	one hundred and sixty	85-5	eight hundred and sixty	four hundred and ninety-five	��87
GN10-20/5000	twenty	twenty-four	five thousand	two hundred and twenty-four	74-10	-	-	��150
GN10-20/6000	twenty	twenty-four	six thousand	two hundred and twenty-four	74-10	-	-	��160
GN10-20/8000	twenty	twenty-four	eight thousand	two hundred and twenty-four	74-10	-	-	��180
GN10-20/10000	twenty	twenty-four	ten thousand	two hundred and twenty-four	74-10	-	-	��180

GN10 indoor single-phase and three-phase high-voltage isolation switch

[Indoor isolation switch]GN6,GN8 Indoor three-phase high voltage isolation switch

2026-6-19 14:40:48

The GN6-6 and 10T indoor three-phase high voltage isolation switch consists of a base, pillar porcelain insulators, operating porcelain insulators, and conductive parts.
GN8-6, 10T - ��, �� type indoor three-phase high voltage isolation switches consist of a base, pillar porcelain insulators, porcelain sleeves, operating insulators, and conductive parts.
GN8-6, 10T-III indoor three-phase high voltage isolation switch consists of a base, porcelain bushing, operating porcelain insulator, and conductive part

model	rated voltage kv	Maximum operating voltage kv	rated current A	Dynamic stable current KA (peak value)	5-second thermal stability current KA (effective value)
GN6-6T/200, GN8-6T/200- I, II, III	six	six point nine	two hundred	twenty-five point five	ten
GN6-6T/200, GN8-6T/400- I, II, III	six	six point nine	four hundred	forty	fourteen
GN6-6T/630, GN8-6T/630- I, II, III	six	six point nine	six hundred and thirty	fifty-two	twenty
GN6-10T/200, GN8-10T/200- I, II, III	ten	eleven point five	two hundred	twenty-five point five	ten
GN6-10T/400, GN8-10T/400- I, II, III	ten	eleven point five	four hundred	forty	fourteen
GN6-10T/630, GN8-10T/630- I, II, III	ten	eleven point five	six hundred and thirty	fifty-two	twenty
GN6-10T/1250, GN8-10T/1250- I, II, III	ten	eleven point five	one thousand two hundred and fifty	seventy-five	thirty
GN6-35T-1250	thirty-five	forty point five	one thousand two hundred and fifty	seventy-five	thirty

[Indoor isolation switch]GN1 Indoor single-phase high voltage isolation switch

2026-6-19 14:40:39

The GN1 indoor single-phase high voltage isolation switch consists of a base, pillar porcelain insulators, operating porcelain insulators, and conductive parts.

model	rated voltage kv	Maximum operating voltage kv	rated current A	Dynamic stable current KA (peak value)	10s thermal stability current KA (effective value)	weight kg
GN1-10/2000	ten	eleven point five	two thousand	eighty-five	thirty-six	thirty-four
GN1-20/400	twenty	twenty-three	four hundred	fifty	ten	thirty-eight
GN1-35/400	thirty-five	forty point five	four hundred	fifty	ten	thirty-eight
GN1-35/630	thirty-five	forty point five	six hundred and thirty	fifty	fourteen	forty

Appearance and installation dimensions

GN1 type indoor single-phase high voltage isolation switch

[Indoor isolation switch]Indoor AC high voltage isolation switch

2026-6-19 14:40:31

GN22-12 (C) Indoor AC High Voltage Isolation Switch Model and Its Meaning

Environmental conditions for use:
+Altitude: not exceeding 1000m;
+Surrounding air temperature: -30 �� to+40 ��;
+Relative humidity of the surrounding environment: daily average not exceeding 95%; Monthly average not exceeding 90%;
+The seismic intensity shall not exceed 8 degrees;
+Safe place: No fire, flammable, explosive, severely polluted, chemically corroded, or violently vibrating places.

Main technical parameters of GN22-12 (C) indoor AC high voltage isolation switch

voltage		KV	twelve
rated frequency		Hz	fifty
rated current		A	1600~2000	2500~3150
Rated short-circuit withstand current		kA	forty	fifty
Rated peak withstand current		kA	one hundred	one hundred and twenty-five
Rated short-time duration		S	four
Rated insulation level	1-minute power frequency withstand voltage	kV	Inter pole, pole to ground 42 fracture 49
	Lightning impulse withstand voltage (peak value)	kV	Inter pole, pole to ground 75 fracture 85

GN22-12 (C) Indoor AC High Voltage Isolation Switch Appearance and Installation Dimensions (The following image can be clicked to enlarge):

Figure 1: Dimensions of GN22-12 Indoor AC High Voltage Isolation Switch

Model number	A	B	C	D	E
GN22-12/1600-2000	two hundred and fifty-five	three hundred and five	five hundred and twenty-seven	four hundred and ninety	fifty
GN22-12/2500-3150	two hundred and sixty-two	three hundred and twenty-five	five hundred and thirty-eight	four hundred and ninety-four	sixty

Figure 2: Dimensions of GN22-12C Indoor AC High Voltage Isolation Switch

GN22-12C/1600-2000 High Voltage Isolation Switch Terminal Diagram GN22-12C/2500-3150 High Voltage Isolation Switch Terminal Diagram

model	A	B	C	D	E
GN22-12C/1600-2000	five hundred and thirty-seven	two hundred and fifty-five	three hundred and five	eight hundred and seven	five hundred and eighty
GN22-12C/2500-3150	five hundred and thirty-nine	two hundred and sixty-seven point five	three hundred and thirty	eight hundred and eighty	six hundred and thirty

GN22-12 (C) Indoor AC High Voltage Isolation Switch

[Indoor isolation switch]GN16-7.2/400-20 High voltage isolation switch

2026-6-19 14:40:23

model	rated voltage	rated current	Rated short-time Withstand current	Mechanical lifespan (times)	Rated short circuit duration	Overall dimensions	installation dimensions	Weight (KG)
GN16-7.2/400-20	seven thousand and two hundred	four hundred	20/2	two thousand		530360360		twelve

GN16-7.2/400-20 High Voltage Isolation Switch

[Indoor isolation switch]GN8-3.6 High voltage isolation switch

2026-6-19 14:40:14

GN8-3.6 High Voltage Isolation Switch

model	rated voltage	rated current	Rated short-time Withstand current	Rated peak value Withstand current	Rated short circuit duration	Overall dimensions	installation dimensions	Equipped with a handle
GN8-3.6/S400-20	three thousand and six hundred	four hundred	eight	twenty	four	480248170	370*175

GN8-3.6 High Voltage Isolation Switch

[Indoor isolation switch]GN10 High voltage isolation switch

2026-6-19 14:40:06

GN10 High Voltage Isolation Switch

[Indoor isolation switch]GN9-3.6/S200-5 High voltage isolation switch

2026-6-19 14:39:58

GN9-3.6/S200-5 indoor one-way isolation switch, suitable for 3600V level electrical control cabinets, plays the role of isolating circuits, mainly used in the fields of petroleum, chemical industry, etc.

SGN9-3.6/S200-5 indoor bidirectional isolation switch is used in 3600V electrical control cabinets to isolate circuits, ground circuits, or phase change circuits.

GN9-3.6/S200-5 High Voltage Isolation Switch

model	rated voltage	rated current	Rated short-time Withstand current	Rated peak value Withstand current	Rated short circuit duration	Overall dimensions	installation dimensions	Equipped with a handle
GN9-3.6/S200-5	three thousand and six hundred	two hundred	two	five	two	320224175	184*100	HD12-200
SGN9-3.6/S200-5	three thousand and six hundred	two hundred	two	five	two	300260175	230*100	HD13-200

[Indoor isolation switch]GN25-10 type high current and high voltage isolation switch

2026-6-19 14:39:49

GN25-10/2000�� The 3000 type household three high voltage isolation switch consists of a base, pillar porcelain insulators, operating porcelain insulators, and conductive parts.

Basic parameters of GN25-10 high current and high voltage isolation switch

model	Product Code	rated voltage	Maximum working voltage KV	Rated current A	Dynamic stability current KA (peak value)	5-second thermal stability current KA (effective value)	Weight kg
GN25-10T/2000	seventy-one thousand one hundred and fifteen	ten	eleven point five	two thousand	one hundred	forty	seventy-four
GN25-10T/3000	seventy-one thousand one hundred and nineteen	ten	eleven point five	three thousand one hundred and fifty	one hundred and twenty-five	fifty	one hundred

GN25-10 high current and high voltage isolation switch

[Indoor isolation switch]GN27-40.5 series indoor high-voltage isolation switch

2026-6-19 14:39:41

GN27-40.5 indoor high-voltage isolation switch is a new type of product. Suitable for rated voltage
40.5V�� In a 50Hz AC power system, it is designed and produced as a replacement for old products to open and close circuits with voltage and no load. Can be paired with high-voltage switchgear or used independently. Equipped with CS6-2 operating mechanism. All adopt reinforced insulation design, which can meet the requirements for use in Class II polluted areas. Product features:

Design scientifically, reasonably, and structurally innovative;
Multi contact, rotating contact, good self-cleaning ability, and improved heat dissipation capability;
The contact point is within two surfaces, with low operating torque, high contact pressure, and easy adjustment;
Adopting a large climbing distance to enhance insulation capability and withstand voltage to meet the highest requirements;
Installing bearings on the shaft increases its service life and makes it easy to operate.

Technical parameters of GN27-40.5 series indoor high-voltage isolation switch

Rated voltage kV	Rated current A	4s rated short-time withstand current	Rated peak withstand current	1-minute power frequency withstand voltage kV	Lightning impulse withstand voltage kV
forty point five	six hundred and thirty	twenty	fifty	95/118	185/125
forty point five	one thousand two hundred and fifty	thirty-one point five	eighty
forty point five	two thousand	forty	one hundred

model	Rated voltage KV	Rated current A	Maximum working voltage KV	Dynamic stability current KA	Thermal stability current KA-S
GN27-35/630	thirty-five	six hundred and thirty	forty point five	fifty	16-6
GN27-35/1250	thirty-five	one thousand two hundred and fifty	forty point five	seventy	25-6
GN27-35/1600	thirty-five	one thousand and six hundred	forty point five	seventy	36-10
GN27-35-C1��C2/630	thirty-five	six hundred and thirty	forty point five	fifty	16-6
CN27-35C1��C2/1250	thirty-five	one thousand two hundred and fifty	forty point five	seventy	25-6
GN27-35C1��C2/1600	thirty-five	one thousand and six hundred	forty point five	eighty-five	36-10


GN27-35/630�� Outline and installation diagram of 1250 and 1600 isolation switches

GN27-35C2/630�� Appearance and installation diagram of 1250 and 1600 isolation switches

GN27-35C1-630�� Appearance and installation diagram of 1250 and 1600 isolation switches

Ordering Instructions
When placing an order, please specify the product model, rated voltage, rated current, and if installing composite insulators with H

[Indoor isolation switch]GN30-12(D) Rotating indoor high-voltage isolation switch

2026-6-19 14:39:32

Environmental conditions for use:
+Altitude: 1000-3000m;
+Surrounding air temperature: upper limit+40 ��, lower limit -10 ��;
+Relative humidity of the surrounding environment: daily average not exceeding 95%, monthly average not exceeding 90%;
+The seismic intensity shall not exceed 8 degrees;
+Places without severe dust, chemical corrosion, and explosive substances;
+No places with frequent and severe vibrations.

Main technical parameters of GN30-12 (D) rotary indoor high-voltage isolation switch

model	rated voltage kv	Maximum operating voltage kv	rated current A	Dynamic stable current KA (peak value)	4s thermal stability current KA (effective value)
GN30-10/630-20	ten	eleven point five	six hundred and thirty	fifty	twenty
GN30-10/100-31.5	ten	eleven point five	one hundred	eighty	thirty-one point five
GN30-10/1250-31.5	ten	eleven point five	one thousand two hundred and fifty	eighty	thirty-one point five
GN30-10/2000-40	ten	eleven point five	two thousand	one hundred	forty
GN30-10/2500-40	ten	eleven point five	two thousand and five hundred	one hundred	forty
GN30-10/3150-40	ten	eleven point five	three thousand one hundred and fifty	one hundred	forty
GN30-10D/630-20	ten	eleven point five	six hundred and thirty	fifty	twenty
GN30-10D/1000-31.5	ten	eleven point five	one thousand	eighty	thirty-one point five
GN30-10D/1250-31.5	ten	eleven point five	one thousand two hundred and fifty	eighty	thirty-one point five
GN30-10D/2000-40	ten	eleven point five	two thousand	one hundred	forty
GN30-10D/2500-40	ten	eleven point five	two thousand and five hundred	one hundred	forty
GN30-10D/3150-40	ten	eleven point five	three thousand one hundred and fifty	one hundred	forty

GN30-12 (D) Rotary Indoor High Voltage Isolation Switch Appearance and Installation Dimensions

Figure 1 Outline drawing of GN30-12/630, 1000 indoor AC high voltage isolation switch 630A wiring terminal diagram

Figure 2: Outline drawing of GN30-12/630, 1000 indoor AC high voltage isolation switch 1000A wiring terminal diagram

Figure 3 Outline drawing of GN30-12D/630, 1000 indoor AC high voltage isolation switch

CN30-12				CN30-12D
630A		1000A		630A			1000A
A	C	A	C	A	B	C	A	B	C
��560	��315	��580	��332	��550	��610	��240	��575	��615	��245

Figure 4 Outline drawing of GN30-12/1250 indoor AC high voltage isolation switch

[Indoor isolation switch]GN2 series indoor high-voltage isolation switch GN2-10/2000 GN2-10/3000

2026-6-19 14:39:23

structure
The GN2 indoor three-phase high voltage isolation switch consists of a base, pillar porcelain insulators, operating porcelain insulators, and conductive parts. Among them: GN2-35/630-I, II; The 1250-I and II type indoor three-phase high voltage isolation switches consist of a base, pillar porcelain insulators, porcelain sleeves, operating porcelain insulators, and conductive parts.

Basic parameters of GN2 series indoor high-voltage isolation switch

model	Product Code	Rated voltage kV	Maximum working voltage KV	Rated current A	Dynamic stability current KA (peak value)	Thermal stability current KA (effective value)		Weight kg
model	Product Code	Rated voltage kV	Maximum working voltage KV	Rated current A	Dynamic stability current KA (peak value)	10s	6s	Weight kg
GN2-10/2000	seven thousand one hundred and fifty-one	ten	eleven point five	two thousand	eighty	thirty-six		seventy-nine
GN2-10/3000	seven thousand one hundred and fifty-two	ten	eleven point five	three thousand	one hundred	fifty		one hundred and fifty-seven
GN2-20/400	seven thousand one hundred and fifty-five	twenty	twenty-three	four hundred	fifty	ten		seventy-one
GN2-35/400	seven thousand one hundred and fifty-seven	thirty-five	forty point five	four hundred	fifty	ten		one hundred and four
GN2-35/400 (all operating conditions)	seventy-one thousand four hundred and two	thirty-five	forty point five	four hundred	fifty	ten		one hundred and fourteen
GN2-35/630	seven thousand one hundred and fifty-eight	thirty-five	forty point five	six hundred and thirty	fifty	fourteen		one hundred and ten
GN2-35/630 (all operating conditions)	seventy-one thousand four hundred and three	thirty-five	forty point five	six hundred and thirty	fifty	fourteen		one hundred and nineteen
GN2-35/2000	seven thousand one hundred and sixty-four	thirty-five	forty point five	two thousand	eighty-five	thirty-six		one hundred and ninety-five
GN2-35/2000 (all operating conditions)	seventy-one thousand four hundred and four	thirty-five	forty point five	two thousand	eighty-five	thirty-five		two hundred and six
GN2-35/630-��	seven thousand one hundred and ninety-five	thirty-five	forty point five	six hundred and thirty	forty		sixteen	two hundred and twelve
GN2-35/630-��	seven thousand one hundred and ninety-six	thirty-five	forty point five	six hundred and thirty	forty		sixteen	two hundred and twelve
GN2-35/1250-��	seven thousand one hundred and ninety-seven	thirty-five	forty point five	one thousand two hundred and fifty	seventy		twenty-five	two hundred and thirty-one
GN2-35/1250-��	seven thousand one hundred and ninety-eight	thirty-five	forty point five	one thousand two hundred and fifty	seventy		twenty-five	two hundred and thirty-one

GN2 series indoor high-voltage isolation switch appearance and installation dimensions

model	Product Code	Main dimensions (mm)
model	Product Code	L	L1	H	h	A	A1	A1	B
GN2-10/2000	seven thousand one hundred and fifty-one	one thousand one hundred and fifty	one hundred and sixty	five hundred and eighty-two	three hundred and twenty-seven	nine hundred and ten	three hundred and fifty	one hundred and fifty	three hundred and sixteen
GN2-10/3000	seven thousand one hundred and fifty-two	one thousand two hundred and forty	one hundred and sixty	six hundred and fifty-five	three hundred and sixty	nine hundred and sixty-six	three hundred and fifty	one hundred and fifty	four hundred and eighty
GN2-20/400	seven thousand one hundred and fifty-five	one thousand one hundred and fifty	two hundred and fifty	eight hundred	four hundred and fifty	nine hundred and eight	three hundred and fifty	one hundred and twenty	four hundred and fifty
GN2-35/400	seven thousand one hundred and fifty-seven	one thousand five hundred and thirty	three hundred and eighty	nine hundred and fifty	five hundred and twenty	one thousand and one hundred	four hundred and fifty	one hundred and seventy	six hundred and thirty-five
GN2-35/630	seven thousand one hundred and fifty-eight	one thousand five hundred and thirty	three hundred and eighty	nine hundred and sixty	five hundred and thirty-five	one thousand and one hundred	four hundred and fifty	one hundred and seventy	six hundred and thirty-five

GN2 series indoor high-voltage isolation switch

[Indoor isolation switch]GN19-12(C) series indoor AC high voltage isolation switch

2026-6-19 14:39:15

The GN19-12 (C) series indoor AC high voltage isolation switch is suitable for use in AC 50Hz, rated voltage 12kV and below power systems. It is equipped with a manual operating mechanism and is used as a switching device when there is voltage but no load.

The performance of GN19-12 (C) series indoor AC high voltage isolation switch meets the standard requirements of "AC high voltage isolation switch and grounding switch".

Environmental conditions for use
1. Altitude not exceeding 1000m;
2. Surrounding air temperature: upper limit+40 ��, lower limit -30 ��;
3. Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
4. The seismic intensity shall not exceed 8 degrees;
5. There is no fire, explosion hazard, serious pollution, chemical corrosion, or severe vibration in the area.

Main technical parameters

model	Rated voltage (KV)	Rated current (A)	4S rated short-time withstand current (effective value) (KA)	Rated peak withstand current (KA)
GN19-12/S400-12.5	twelve	four hundred	twelve point five	thirty-one point five
GN19-12/S630-20	twelve	six hundred and thirty	twenty	fifty
GN19-12/S1000-31.5	twelve	one thousand	thirty-one point five	eighty
GN19-12/S1250-31.0	twelve	one thousand two hundred and fifty	thirty-one point five	eighty
GN19-12C/S400-12.5	twelve	four hundred	twelve point five	thirty-one point five
GN19-12C/S630-20	twelve	six hundred and thirty	twenty	fifty
GN19-12C/S1000-31.5	twelve	one thousand	thirty-one point five	eighty
GN19-12C/S1250-31.5	twelve	one thousand two hundred and fifty	thirty-one point five	eighty

Appearance and installation dimensions

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Figure 1 GN19-12 series

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Figure 2 GN19-12C series Fig

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GN19-12(C)/630/400 GN19-12(C)/1000/1250

Figure 3: Dimensions of Wiring Terminals

model	A	B	C
GN19-12/400	four hundred and ninety	four hundred and thirty-six	4.14×24
GN19-12/630	four hundred and ninety	four hundred and thirty-six	4.14×24
GN19-12/1000/1250	five hundred and ten	five hundred and thirty	4.18×28
GN19-12C/400	four hundred and sixty	six hundred and twenty-five	4.14×24
GN19-12C/630	four hundred and sixty	six hundred and twenty-five	4.14×24
GN19-12C/1000/1250	five hundred and five	seven hundred and forty-five	4.14×28