Shanghai Huabang Industrial Business Network - High voltage grounding switch

[High voltage grounding switch]MZD66-12/40 Indoor high-voltage grounding switch

2026-6-20 10:25:20

The MZD66-12/40 (prototype number JN15-12/40) indoor high-voltage grounding switch is a new type of grounding switch designed and developed by our company based on the ES1 grounding switch prototype, which has international advanced level. The structural form is a combination type, and its performance meets the requirements of GB1985-89 "AC High Voltage Isolating Switches and Grounding Switches" and EC129. It is suitable for indoor 3-10 kV three-phase AC 50 (60) Hz power systems; It has a certain closing ability to protect other electrical equipment inside the switchgear from damage, and can be used in conjunction with various high-voltage switchgear as grounding protection during maintenance of high-voltage electrical equipment.

Structural characteristics:
Advanced design, indoor load switch; Simple structure, easy installation and adjustment; Having the ability to quickly separate and merge; Surrounding air temperature: upper limit+40 ��, lower limit -10 ��; Altitude: not exceeding 1000 meters; Humidity conditions: The average daily relative humidity should not exceed 95%, and the average monthly relative humidity should not exceed 90%; Seismic intensity: not exceeding 8 degrees; Pollution level: Level II.

MZD66-12 indoor high-voltage grounding switch model meaning

Main technical parameters of MZD66-12 indoor high-voltage grounding switch

project		unit	data
rated voltage		KV	twelve
Rated short-time withstand current (thermal stability)		KV	forty
Rated short-circuit duration		S	four
Rated short-circuit closing current		KA	one hundred
Rated peak withstand current (dynamic stability)		KA	one hundred
Rated insulation level	Rated short-time power frequency withstand voltage	KV	Relatively and alternately	forty-two
	Rated lightning impulse withstand voltage			seventy-five
mechanical life		time	two thousand

MZD66-12 Indoor High Voltage Grounding Switch Dimensions and Installation Dimensions

Copper bar wiring terminal diagram

Installation Hole Diagram

Product Model	E	F	G	H	D
MZD66-12/40-210	two hundred and ten	fifty	one hundred and eighty-five	six hundred and fifty-five	five hundred and sixteen
MZD66-12/40-220	two hundred and twenty	fifty	one hundred and eighty-five	six hundred and seventy-five	five hundred and thirty-six
MZD66-12/40-230	two hundred and thirty	fifty	eighty-five	six hundred and ninety-five	five hundred and fifty-six
MZD66-12/40-250	two hundred and fifty	fifty	one hundred and eighty-five	seven hundred and thirty-five	five hundred and ninety-six
MZD66-12/40-275	two hundred and seventy-five	fifty	two hundred and ten	eight hundred and ten	six hundred and forty-six

[High voltage grounding switch]MZD81-40.5/31.5 Indoor high-voltage grounding switch

2026-6-20 10:24:58

MZD81-40.5/31.5 indoor high-voltage grounding switch (hereinafter referred to as grounding switch) is an advanced level product with high technical parameter performance developed by Xi'an High Voltage Apparatus Research Institute. After comprehensive assessment, its performance meets the requirements of the national standard GB1985 "AC High Voltage Isolating Switches and Grounding Switches", suitable for 40.5kV, AC 50Hz power systems, and can be used in conjunction with KYN �� -45 and other types of high-voltage switches. It can also be used as grounding protection for high-voltage electrical equipment maintenance.

Structural characteristics:
Advanced design, indoor load switch; Simple structure, easy installation and adjustment; Having the ability to quickly separate and merge; The upper limit of air temperature around an altitude not exceeding 1000 meters plus 40 degrees Celsius; The lower limit is -10 degrees, and the earthquake intensity does not exceed 8 degrees. There is no risk of flooding, explosion, severe dust, chemical corrosion, or severe vibration in the area.

MZD81-40.5 indoor high-voltage grounding switch model meaning

Main technical parameters

project		unit	data
rated voltage		KV	twelve
maximum voltage		KV	forty
Thermal stability voltage		KA	four
Thermal stability current time		S	one hundred
Short circuit closing current		KA
Dynamic stable current		KA
Center distance between poles		mm
Rated insulation level	Rated short-time power frequency withstand voltage	KV	Extreme to ground and between poles	ninety-five
	Rated lightning impulse withstand voltage			one hundred and eighty-five

MZD81-40.5 Indoor High Voltage Grounding Switch Dimensions and Installation Dimensions

Pole spacing B	H	A (installation hole for channel steel back)
three hundred	seven hundred and ninety	3 holes -15 * 400 * 14 (diameter)
three hundred and fifty	eight hundred and ninety	3 holes -15 * 400 * 14 (diameter)
four hundred	nine hundred and ninety	3 holes -15 * 400 * 14 (diameter)

Ordering Instructions
Please specify the product model, rated voltage, thermal stability current, and phase to phase distance.
A shaft operating mechanism is required, and the right or left operating direction as shown in the above figure should be indicated with the corresponding right or left operating mechanism.
When a sensor powered display device is required, please indicate the type of display.
Users have special requirements that can be resolved through negotiation.

[High voltage grounding switch]JN4-40.5 Indoor AC high voltage grounding switch

2026-6-20 10:24:31

JN4-40.5 Indoor AC High Voltage Grounding Switch

[High voltage grounding switch]JN2-12,JN2-12(Z) Indoor AC high voltage grounding switch

2026-6-20 10:24:02

JN2-12 JN2-12 (Z) Indoor AC High Voltage Grounding Switch

[High voltage grounding switch]JN12-40.5/31.5 type indoor high-voltage grounding switch

2026-6-20 10:23:57

JN12-40.5/31.5 indoor high-voltage grounding switch

[High voltage grounding switch]JNA-12/S High Voltage Grounding Switch

2026-6-20 10:23:48

JNA-12/S-type high-voltage grounding switch

The JNA-12/S series indoor high-voltage grounding switch (referred to as the grounding switch) is a brand new product developed to match our factory's high-voltage switchgear. It can also be matched with various other models of high-voltage switchgear. Its performance meets the requirements of GB1985-89 (AC high-voltage isolation switch and grounding switch), with advanced design, reliable technical performance, simple structure, easy installation and commissioning, and is equipped with high-voltage live display device.

Technical parameters of JNA-12/S-type high-voltage grounding switch

Product model and specifications	Rated voltage ��kV��	highest Work voltage ��kV��	4S hot stable electric current ��kA��	Dynamic stability Current (Net worth) ��kA��	Close the door Current (Net worth) ��kA��	Rated Insulation Level ��kV��	alternate distance ��mm��	link together speed ��m/s��	main circuit Contact Resistance ��̦��
JNA-12/S25-210	ten	eleven point five	twenty-five	sixty-three	sixty-three	forty-two	two hundred and ten	��5	<120
JNA-12/31.5-210			thirty-one point five	eighty	eighty
JNA-12/S25-220	ten	eleven point five	twenty-five	sixty-three	sixty-three	forty-two	two hundred and ten	��5	<120
JNA-12/S31.5-220			thirty-one point five	eighty	eighty
JNA-12/S25-250	ten	eleven point five	twenty-five	sixty-three	sixty-three	42	two hundred and ten	��5	<120
JNA-12/31.5-250			thirty-one point five	eighty	eighty
JNA-12/S25-275	ten	eleven point five	twenty-five	sixty-three	sixty-three	forty-two	two hundred and ten	��5	<120
JNA-12/31.5-275			thirty-one point five	eighty	eighty

[High voltage grounding switch]JN15A-12(EK6) indoor AC high voltage grounding switch

2026-6-20 10:23:19

JN15A-12 (EK6) indoor high-voltage grounding switch is an indoor product manufactured directly by introducing advanced technology from abroad. It is suitable for use as grounding protection in power systems with AC 50Hz and rated voltage of 12kV, and has corresponding short-circuit closing capability. This grounding switch is a split type with moving and stationary contacts, and can be used in conjunction with various types of metal enclosed switchgear in China according to different installation needs.

Product Features:
1. Advanced design and reliable technical performance;
2. Simple structure, easy installation and debugging;
3. Quick opening and closing, with the ability to close;
4. Beautiful appearance and excellent manufacturing process;
5. Scientific and practical, can be operated on both sides;
6. It can be formal or inverted.

JN15A-12 Indoor AC High Voltage Grounding Switch

[High voltage grounding switch]MZD65-12 type indoor high-voltage grounding switch

2026-6-20 10:23:05

MZD65-12 indoor high-voltage grounding switch is an advanced product developed by integrating the latest technology of domestic and foreign grounding switches. After comprehensive assessment, its performance meets the requirements of GB1985-89 "AC High Voltage Isolating Switches and Grounding Switches" and IEC129. It is suitable for power systems with AC 50Hz of 12kV and below, and can be used in conjunction with various types of high-voltage switchgear for grounding protection.

Structural characteristics:
1. Advanced design, indoor load switch; 2. Simple structure, easy installation and adjustment; 3. Having the ability to quickly separate and merge;

Model meaning

Working and environmental conditions
1. Altitude not exceeding 1000m;
2. Surrounding air temperature: upper limit+40 ��, lower limit -10 ��;
3. Allow storage and transportation at 30 ��;
4. The seismic intensity shall not exceed 8 degrees;
5. No flammable, explosive, severe dust, chemical corrosion, or severe vibration areas.

Main technical parameters of MZD65-12 indoor high-voltage grounding switch

MZD65-12 Indoor High Voltage Grounding Switch Appearance and Installation Dimensions

[High voltage grounding switch]JW1-40.5 outdoor high-voltage grounding switch

2026-6-20 10:22:56

The JW1-40.5 outdoor high-voltage grounding switch is suitable for grounding protection during equipment maintenance in high-voltage lines below 40.5kV. Usually used in conjunction with vertical isolation switches for upper busbar grounding, it can also be used as a transformer neutral point grounding switch

model	rated voltage	Rated short-time withstand current	Rated peak withstand current
JW1-40.5	40.5kV	31.5kA 40kA	80kA 100kA

[High voltage grounding switch]JN15-40.5/31.5 indoor high-voltage grounding switch

2026-6-20 10:22:50

JN15-40.5/31.5 indoor high-voltage grounding switch
280, 300, 350

[High voltage grounding switch]JN6-40.5 High Voltage Grounding Switch

2026-6-20 10:22:48

model	rated voltage	Rated short-time withstand current	Rated peak withstand current	Rated short-circuit closing current
JN6-40.5	40.5kV	25kA	63kA	63kA

JN6-40.5 High Voltage Grounding Switch

[High voltage grounding switch]EK6-24 type indoor high-voltage grounding switch EK6-24/31.5��EK6-24/40

2026-6-20 10:22:39

The EK6-24 indoor high-voltage grounding switch is suitable for use in three-phase AC 50Hz power systems of 24kV and below, as a grounding protection for high-voltage equipment maintenance. Used in conjunction with KYN28 (GZS1) central cabinet.

EK6-24/31.5��EK6-24/40
150, 210, 275

[High voltage grounding switch]JN15-24/40 type indoor high-voltage grounding switch

2026-6-20 10:22:22

JN15-24/40 indoor high-voltage grounding switch
210, 230, 250, 275

[High voltage grounding switch]JN2-12 Indoor AC high voltage grounding switch

2026-6-20 10:22:22

This product has been improved on the JN2-12 indoor high-voltage grounding switch and is mainly installed in the XGN2-12 box type fixed high-voltage cabinet or GG-1A (F) anti misoperation high-voltage switchgear.

JN2A-12 Indoor AC High Voltage Grounding Switch Outline Drawing:

L1	Equipped with GG-1A (F)	two hundred and fifty	Equipped with XGN2	two hundred and fifty
L2		seven hundred		seven hundred and sixty
L3		nine hundred		nine hundred and twenty

Technical parameters of JN2A-12 indoor AC high voltage grounding switch:

Rated voltage kV	Dynamic stability current kA (peak value)	4S thermal stability current kA (effective value)
twelve	eighty	thirty-one point five

JN2-12/31.5- �� Ordinary porcelain bottle without display device
JN2-12/31.5- (W) - �� Passive epoxy insulator sensor with DXN �� -12/��
JN2-12/31.5- (WQ) - �� Passive epoxy full condition insulator sensor with DXN �� -12/��
JN2-12/31.5- (Y) - �� Ordinary porcelain bottle with display device GSN �� -12/��

[High voltage grounding switch]JN15-24/31.5 type indoor high-voltage grounding switch 210��230��250��275

2026-6-20 10:22:13

JN15-24/31.5 indoor high-voltage grounding switch

Suitable for three-phase, AC 50Hz power systems of 24kV and below, it can be used as a separate maintenance protection switch for transformer rooms in substations, or as a manually operated mechanical grounding device to ensure personal safety during maintenance. It is usually used for central cabinets and various types of high-voltage switchgear.
210, 230, 250, 275

[High voltage grounding switch]JN15-12/50 type indoor high-voltage grounding switch 165��180��210��230��250��275

2026-6-20 10:22:03

The JN15-12 indoor high-voltage grounding switch (hereinafter referred to as the grounding switch) is a brand new product with international advanced level designed and developed based on the EK6 grounding switch of Germany's GALOR-EMAG company and the ES1 of Xi'an Senyuan company. Suitable for three-phase, AC 50Hz power systems of 12kV and below, it can be used as a separate maintenance protection switch for substation transformer rooms, or as a manually operated mechanical grounding device to ensure personal safety during maintenance. It is usually used for central cabinets and various types of high-voltage switchgear.
JN15-12/50 indoor high-voltage grounding switch opening distance specification:

165, 180, 210, 230, 250, 275

[High voltage grounding switch]JN8-12(C) Indoor AC high voltage grounding switch

2026-6-20 10:22:02

The JN8-12 (C) series indoor AC high voltage grounding switch is a single pole grounding switch used in circuit networks with rated voltage of 12KV and below AC 50Hz. It is a dedicated grounding switch used in conjunction with the GN19-12 (C) series high voltage switch for safe grounding during power outage maintenance.

Main technical parameters of JN8-12 (C) indoor AC high-voltage grounding switch

model	Rated voltage (KV)	4s rated short-time withstand current (KA)	Rated peak withstand current (KA)	Model and specification of isolation switch
JN8-12/12.5	twelve	twelve point five	thirty-one point five	GN19-12/400-12.5
JN8-12C/12.5	twelve	twelve point five	thirty-one point five	GN19-12C/400-12.5
JN8-12/20	twelve	twenty	fifty	GN19-12/630-20
JN8-12C/20	twelve	twenty	fifty	GN19-12C/630-20
JN8-12/31.5	twelve	thirty-one point five	eighty	GN19-12/1000-31.5
JN8-12C/31.5	twelve	thirty-one point five	eighty	GN19-12C/1000-31.5
JN8-12/40	twelve	forty	one hundred	GN19-12/1250-40
JN8-12C/40	twelve	forty	one hundred	GN19-12C/1250-40

Exterior installation dimensions

JN8-12 (C) Indoor AC High Voltage Grounding Switch

[High voltage grounding switch]JN10-12 High voltage grounding switch

2026-6-20 10:21:55

JN10-12 indoor AC high-voltage grounding switch is used in three-phase AC 50Hz, rated voltage 10kV power systems as a grounding device to ensure personal safety during maintenance.

Characteristics of JN10-12 High Voltage Grounding Switch

The grounding switch is a three-phase device, with three insulators installed on the chassis. The insulators are equipped with wiring terminals and grounding contacts, and the grounding switch is opened and closed by rotating the main shaft on the chassis. The grounding switch is equipped with a spring closing device, which is driven by an operating mechanism. When the spring energy is stored to a certain position, the spring energy is released to achieve rapid closing of the grounding switch. The grounding switch can be equipped with a high-voltage live display device, and can also be interlocked with its switch device to prevent misoperation.

[High voltage grounding switch]JN4-12 type indoor high-voltage grounding switch

2026-6-20 10:21:46

JN4-12/31.5 and JN4-12G indoor high-voltage grounding switches are a new type of grounding switch designed and developed with domestic standards. The structural form is assembled, and its performance meets the requirements of GB1985-89 "AC High Voltage Disconnectors and Grounding Switches" and IEC129. It is suitable for indoor 3-12KV three-phase AC 50Hz power systems. It has a certain closing ability to protect other electrical equipment inside the switchgear from damage. Can be used in conjunction with various high-voltage switchgear as grounding protection for high-voltage electrical equipment maintenance.
JN4-12G indoor high-voltage grounding switch is the main component used for 12KV indoor AC metal armored movable metal enclosed switchgear and other high-voltage switchgear, and can also be used separately. Used for grounding protection in AC 50Hz power systems of 12kV and below. Capable of closing short-circuit current. Reasonable structure, small size, and flexible operation. Easy to install and adjust.

2�� Environmental conditions for the use of JN4-12 indoor high-voltage grounding switch
Altitude: not exceeding 1000-3000m
Surrounding air temperature: upper limit+40 ��; Lower limit -25 ��
Seismic intensity: not exceeding 8 degrees
There is no danger of fire, explosion, severe dust, chemical corrosion, or severe vibration in the area.

3�� Main technical data
Rated voltage 12KV
Thermal stability current 31.5 KA
Thermal stability current time S 4
Short circuit closing current 65/80 KA
Dynamic stable current 80 KA
Rated insulation level, power frequency withstand voltage, KV pole to ground and pole to pole 42
Lightning impulse withstand voltage 75

[High voltage grounding switch]BR series grounding switch optional accessories

2026-6-20 10:21:37

BR series grounding switch accessories

[High voltage grounding switch]JN1-12 high-voltage single-phase grounding switch

2026-6-20 10:21:26

JN1-12 high-voltage single-phase grounding switch is a single pole grounding switch used in circuit networks with rated voltage of 12KV and below AC 50HZ. It is a dedicated grounding switch used in conjunction with GN19-12 (C) series high-voltage isolating switches, and is used for safe grounding during power outage maintenance.

[High voltage grounding switch]JW2-126/252 series high-voltage grounding switch

2026-6-20 10:21:11

Structure Introduction

The JW2 series grounding switch consists of a grounding rod, a static contact, a pillar porcelain bottle, and a base. It has two steps of action: when closing, the blade first swings upwards, rotates a certain angle, and the moving contact collides with the stationary contact before rising and inserting into the stationary contact. When opening, the opposite is true. The grounding blade first shrinks downwards, causing the moving contact to pull out of the stationary contact and then swings downwards to reach the end point of opening. JW2 series grounding switch is equipped with CS9 manual operating mechanism.

Main technical parameters of JW2-126/252 series high-voltage grounding switch

JW2-126

model	rated voltage kV	rated current A	Rated short-time Withstand current kA/S	Rated peak value Withstand current kA	One minute power frequency Withstand voltage kV	lightning surge pressure resistance kV
JW2��126��W��/1250	one hundred and twenty-six	one thousand two hundred and fifty	40/3	one hundred	two hundred and thirty	five hundred and fifty

JW2-252

model	rated voltage kV	rated current A	Rated short-time Withstand current kA/S	Rated peak value Withstand current kA	One minute power frequency Withstand voltage kV	lightning surge pressure resistance kV
JW2��252��W��/1250	two hundred and fifty-two	one thousand two hundred and fifty	40/2	one hundred	four hundred and sixty	one thousand and fifty

[High voltage grounding switch]DJN-12/630 Grounding switch

2026-6-20 10:20:54

content	630A	1250A
Isolation switch and grounding switch operating force distance	��200N.m	��200N.m
Interphase center distance	165±2mm	210±2mm
Interphase and relative ground	��125mm	��125mm
Isolation switch opening distance	��150mm	��150mm
main circuit resistance	��70u	��40u

DJN-12/630 grounding switch

[High voltage grounding switch]JN1-12(C) series indoor AC high voltage grounding switch

2026-6-20 10:20:52

The JN1-12 (C) series indoor AC high voltage grounding switch is a single pole grounding switch used in circuit networks with rated voltage of 12kV and below AC 50Hz. It is a dedicated grounding switch used in conjunction with the GN19-12 (C) column high voltage switch for safe grounding during power outage maintenance.

Characteristics of JN1-12 (C) Indoor AC High Voltage Grounding Switch:
Single pole grounding switch, simple structure, easy and reliable operation, economical and practical. It is a dedicated grounding switch used in conjunction with the GN19-12 (C) series high-voltage isolation switch, serving as a safe grounding during power outage maintenance.

[High voltage grounding switch]JN15-12/40 series indoor high-voltage grounding switch

2026-6-20 10:20:45

The JN15-12/40 series indoor high-voltage grounding switch is designed and developed based on the ES1 type grounding switch. The structural form is assembled, and its performance meets the requirements of GB1985-89 "AC High Voltage Isolation Switches and Grounding Switches" and IEC129. It is suitable for indoor 3-12 kV three-phase AC 50 (60) HZ power systems and has a certain closing ability to protect other electrical equipment inside the switchgear from damage. It can be used in conjunction with various high-voltage switchgear as grounding protection during maintenance of high-voltage electrical equipment.

JN15-12/40 series indoor high-voltage grounding switch model and its meaning:

·Environmental conditions for use:
1. Surrounding air temperature: upper limit+40 ��, lower limit -10 ��.
2. Altitude: not exceeding 1000 meters.
3. Humidity conditions: The average daily relative humidity should not exceed 95%, and the average monthly relative humidity should not exceed 90%.
4. Earthquake intensity: not exceeding 8 degrees.
5. There is no fire, explosion hazard, severe dust, chemical corrosion, or severe vibration in the area.

Main technical parameters of JN15-12/40 series indoor high-voltage grounding switch:

project		unit	data
rated voltage		KV	twelve
Rated short-time withstand current (thermal stability)		KA	forty
Rated short-circuit duration		S	four
Rated short-circuit closing current		KA	one hundred
Rated peak withstand current (dynamic stability)		KA	one hundred
Rated insulation level	Rated short-time power frequency withstand voltage	KV	Relative and relative time	forty-two
	Rated lightning impulse withstand voltage			seventy-five
mechanical life		time	two thousand

·JN15-12/40 series indoor high-voltage grounding switch appearance and installation dimensions:

·Copper bar wiring terminal diagram: · Installation hole size diagram:

Product Model	E	F	G	H	D	C
JN15-12/40-210	two hundred and ten	fifty	one hundred and eighty-five	six hundred and fifty-five	five hundred and sixteen	ninety-six
JN15-12/40-220	two hundred and twenty	fifty	one hundred and eighty-five	six hundred and seventy-five	five hundred and thirty-six	ninety-six
JN15-12/40-230	two hundred and thirty	fifty	one hundred and eighty-five	six hundred and ninety-five	five hundred and fifty-six	ninety-six
JN15-12/40-250	two hundred and fifty	fifty	one hundred and eighty-five	seven hundred and thirty-five	five hundred and ninety-six	ninety-six
JN15-12/40-275	two hundred and seventy-five	fifty	two hundred and ten	eight hundred and ten	six hundred and forty-six	one hundred and sixteen

·Ordering Notice:
When ordering a grounding switch, it is necessary to indicate the product model, distance, and whether a live display device (display model) is provided.
2. Does the length of the soft connection need to be extended (conventional L=240).
3. If the user has special requirements, please negotiate with our factory to resolve them.

[High voltage grounding switch]EK6-12 type indoor high-voltage grounding switch EK6-12/31.5��12/40��EK6-12/50

2026-6-20 10:20:37

The EK6-12 series indoor high-voltage grounding switch is a domestically produced product that has been improved from the German CALOK.EMAG company's EK6 type grounding switch and has advanced domestic standards. Its performance meets the requirements of GB1985-89 "AC High Voltage Isolation Switches and Grounding Switches" and IEC129, and is suitable for use in indoor 3-12 kV three-phase AC 50HZ power systems. It can be used in conjunction with various high-voltage switchgear as grounding protection for high-voltage electrical equipment maintenance.

EK6-12 indoor high-voltage grounding switch model and its meaning:

Environmental conditions for use:
1. Surrounding air temperature: upper limit+40 ��, lower limit -10 ��.
2. Altitude: not exceeding 1000 meters.
3. Humidity conditions: The average daily relative humidity should not exceed 95%, and the average monthly relative humidity should not exceed 90%.
4. Earthquake intensity: not exceeding 8 degrees.
5. There is no fire, explosion hazard, severe dust, chemical corrosion, or severe vibration in the area.

Main technical parameters of EK6-12 indoor high-voltage grounding switch:

Project		unit	data
rated voltage		KV	twelve
Rated short-time withstand current (thermal stability)		KA	thirty-one point five
Rated short-circuit duration		S	four
Rated short-circuit closing current		KA	eighty
Rated peak withstand current (dynamic stability)		KA	eighty
Rated insulation level	Rated short-time power frequency withstand voltage	KV	Relative and relative time	forty-two
	Rated lightning impulse withstand voltage			seventy-five
mechanical life		time	two thousand

JN15-12/31.5 series indoor high-voltage grounding switch appearance and installation dimensions:

·Copper bar wiring terminal diagram: · Installation hole size diagram:

Product Model	E	F	G	H	D
EK6-12/31.5-150	one hundred and fifty	seventy-five	one hundred and sixty	five hundred and thirty-five	three hundred and ninety-six
EK6-12/31.5-210	two hundred and ten	fifty	one hundred and eighty-five	six hundred and fifty-five	five hundred and sixteen
EK6-12/31.5-230	two hundred and thirty	fifty	one hundred and eighty-five	six hundred and ninety-five	five hundred and fifty-six
EK6-12/31.5-250	two hundred and fifty	fifty	one hundred and eighty-five	seven hundred and thirty-five	five hundred and ninety-six
EK6-12/31.5-275	two hundred and seventy-five	fifty	two hundred and ten	eight hundred and ten	six hundred and forty-six

Ordering Notice:
When ordering this product, please indicate the product model, rated voltage, phase spacing, installation position, and whether the mechanism is operated on the right or left.
If users have special requirements, they can negotiate and resolve them.

[High voltage grounding switch]JN2-40.5 type indoor high-voltage grounding switch

2026-6-20 10:20:28

The JN2-40.5 indoor high-voltage grounding switch is an indoor high-voltage electrical appliance designed based on the grounding switch section of GB1985-89 "AC High Voltage Isolation Switches and Grounding Switches", which is equivalent to IEC 129-84 "Isolation Switches and Grounding Switches" and IEC 694-84 "Common Provisions for High Voltage Switchgear and Control Equipment". JN2-40.5 type grounding switch is suitable for power systems with three-phase AC 50Hz of 35KV and below, and has a voltage monitoring device. Its structure is simple and reliable, with low operating force and easy installation and debugging. It is usually used in JYN1-40.5 and GFC-40.5 switchgear, and can also be used separately.

·Environmental conditions for use
1. Surrounding air temperature: upper limit+40 ��, lower limit 10 �� in general areas, daily temperature difference 15 ��;
2. The altitude is 1000m and below.
3. Relative humidity: Monthly average not exceeding 90%, daily average not exceeding 95%.
4. Seismic intensity: not exceeding 8 degrees;
5. Environmental conditions: A place without fire, explosion hazards, severe dust, chemical corrosion, and severe vibration, with a pollution level of II.

·JN2-40.5 indoor high-voltage grounding switch model and meaning

·Main technical parameters of JN2-40.5 indoor high-voltage grounding switch

project		unit	data
rated voltage		kV	40��5
Rated short-time withstand current (thermal stability)		kA	twenty-five
Rated short-time duration		S	four
Rated peak withstand current (dynamic stability)		kA	sixty-three
Rated short-circuit closing current		kA	sixty-three
spacing		mm	four hundred and sixty
Rated insulation level	Main circuit 1-minute power frequency withstand voltage	kV	ninety-five
	Lightning impulse withstand voltage		one hundred and eighty-five
	secondary circuit		two
mechanical life		time	two thousand
Charged display device with partial discharge capacity		pC	��10

·JN2-40.5 indoor high-voltage grounding switch appearance and installation dimension diagram:

JN2-40.5 indoor high-voltage grounding switch

[High voltage grounding switch]JN4-12(G) type indoor AC high voltage grounding switch

2026-6-20 10:20:20

JN4-12 (G) type indoor high-voltage grounding switch is the main component used for 12kV indoor AC metal armored movable metal enclosed switchgear and other high-voltage switchgear, and can also be used separately. Used for grounding protection in AC 50Hz power systems of 12kV and below. Capable of closing short-circuit current. Reasonable structure, small size, flexible operation, easy installation and adjustment.

Product Features:
Product design is scientific, innovative, unique, and reasonable; Advanced and reliable technical performance; Adopting the principle of shunt magnetic lock, pressure is automatically generated when powered on,
Ensure good contact; No need for corner pressure springs, low operating force. It can be used in conjunction with various types and models of high-voltage cabinets, and can also be used as grounding protection during maintenance of high-voltage electrical equipment

Main technical parameters of JN4-12G indoor AC high-voltage grounding switch

Name		Unit	Parameters
rated voltage		KV	twelve
Rated short-time withstand current		KA	twenty
Rated short-time duration		S	four
Rated peak withstand current		KA	fifty
Rated short-time closing current		KA	fifty
Center distance between poles		mm	210��230��250
Rated insulation water syndrome	Power frequency withstand voltage (1min)	KV	Ground 42
Rated insulation water syndrome	Lightning impulse withstand voltage	KV	Jijian 75

Exterior installation dimensions

Product model and specifications	A	B	C
JN12-12/31.5-150	one hundred and fifty	three hundred and ninety-six	five hundred and thirty-five
JN12-12/31.5-165	one hundred and sixty-five	four hundred and twenty-six	five hundred and sixty-five
JN12-12/31.5-210	two hundred and ten	five hundred and sixteen	six hundred and fifty-five
JN12-12/31.5-230	two hundred and thirty	five hundred and fifty-six	seven hundred and ten
JN12-12/31.5-250	two hundred and fifty	five hundred and ninety-six	seven hundred and sixty

JN4-12G Indoor AC High Voltage Grounding Switch

[High voltage grounding switch]JN22-40.5/31.5 type grounding switch

2026-6-20 10:20:19

JN22-40.5/31.5 indoor high-voltage grounding switch (hereinafter referred to as grounding switch) is an advanced level product with high technical parameter performance developed by Xi'an High Voltage Apparatus Research Institute. After comprehensive assessment, its performance meets the requirements of the national standard GB1985 "AC High Voltage Isolating Switches and Grounding Switches", suitable for 40.5KV, AC 50Hz power systems, and can be used in conjunction with KYN61-41.5 and other types of high-voltage switchgear. It can also be used for grounding protection during high-voltage electrical commissioning and maintenance.

project		unit	data
rated voltage		KV	forty point five
Rated short-time withstand current		KA	thirty-one point five
Rated short-circuit duration		S	four
Rated short-circuit closing current		KA	eighty
Rated peak withstand current		KA	eighty
Center distance between poles		mm	350; four hundred
Rated insulation level	1-minute power frequency withstand voltage	KV	Extreme to ground and between poles	ninety-five
	Lightning impulse withstand voltage			one hundred and eighty-five

JN22-40.5/31.5 type grounding switch

[High voltage grounding switch]JN15-10/31.5 (split type) grounding switch

2026-6-20 10:20:11

JN15-10/31.5 (split type) grounding switch

[High voltage grounding switch]JN12-35/25 type grounding switch

2026-6-20 10:20:02

JN12-35/25 type grounding switch

[High voltage grounding switch]JN15-12 series indoor AC high voltage grounding switch

2026-6-20 10:19:35

JN15-12/T31.5-80 indoor AC high-voltage grounding switch is a product with international advanced level. Its performance meets the requirements of GB1985-1989 "AC High Voltage Disconnectors and Grounding Switches" and IEC129, and is suitable for use in power systems with AC 50Hz of 12kV and below. It can be used in conjunction with various types of high-voltage switchgear and can also be used as grounding protection for high-voltage electrical equipment maintenance. This type of switch can be used for selecting live display devices.

project		unit	data
rated voltage		KV	twelve
Thermal stability current		KA	thirty-one point five
Thermal stability current time	S	four
Short circuit closing current		KA	65/80
Dynamic stable current		KA	eighty
Rated insulation level	power frequency withstand voltage	KV	Extreme to ground and between poles	forty-two
	Lightning impulse withstand voltage			seventy-five

Main technical parameters of JN15-12 series indoor AC high voltage grounding switch:

Appearance and installation dimensions:

JN15-12 series indoor AC high voltage grounding switch

[High voltage grounding switch]JN3-12 shunt magnetic lock indoor AC high voltage grounding switch

2026-6-20 10:19:26

The JN3-12 series shunt magnetic lock indoor high-voltage grounding switch is suitable for 12kV and AC 50Hz power systems, and can be used in conjunction with various types of high-voltage switchgear. It can also be used as grounding protection during maintenance of high-voltage electrical equipment.
Product features: 1. Scientific, innovative, unique, and reasonable product design;
2. Advanced and reliable technical performance;
3. Adopting the principle of shunt magnetic lock, pressure is automatically generated when powered on to ensure good contact;
4. No need to touch the pressure spring, low operating force.
5. It can be used in conjunction with various types of high-voltage switchgear and can also serve as grounding protection for high-voltage electrical equipment maintenance.

Main technical parameters of JN3-12 shunt magnetic lock indoor AC high-voltage grounding switch

Name		Unit	parameter
rated voltage		KV	twelve
Rated short-time withstand current		KA	16,20,25,31.5
Rated short-time duration		S	four
Rated peak withstand current		KA	40,50,63,80
Center distance between poles		mm	210,230,250,275
Rated insulation level	Power frequency withstand voltage (1min)	KV	To ground 42, between poles 75
Rated insulation level	Lightning impulse withstand voltage (peak value)	KV	To ground 42, between poles 75

Product model and specifications	A	B	C	D	B	C
JN3-12/20-210	two hundred and ten	six hundred and four	three hundred and one	three hundred and sixty-three	Figure 3	Figure 5
JN3-12/20-230	two hundred and thirty	six hundred and forty-four	three hundred and one	three hundred and sixty-three
JN3-12/20-250	two hundred and fifty	six hundred and eighty-four	three hundred and one	three hundred and sixty-three
JN3-12/20-275	two hundred and seventy-five	seven hundred and thirty-four	three hundred and one	three hundred and sixty-three
JN3-12/31.5��25��-210	two hundred and ten	six hundred and four	three hundred and five	three hundred and seventy	Figure 4
JN3-12/31.5��25��-230	two hundred and thirty	six hundred and forty-four	three hundred and eight	three hundred and seventy
JN3-12/31.5��25��-250	two hundred and fifty	six hundred and eighty-four	three hundred and eight	three hundred and seventy
JN3-12/31.5��25��-275	two hundred and seventy-five	seven hundred and thirty-four	three hundred and eight	three hundred and seventy

JN3-12 shunt magnetic lock indoor AC high voltage grounding switch, external installation dimensions

JN3-12 shunt magnetic lock indoor AC high voltage grounding switch