Customized earthing switch JNH15A-12 Series

Static contacts can be changed according to installation position. The earthing switch can be customized according to customer's static contacts size. Static contacts with grounding switches can also be selected.

  • Product Detail

Customized earthing switch JNH15A-12 Series

Rated Voltage  (kV)

Thermal Steady Current  (kA)

Thermal Steady Time(s)

Dynamic Steady Current (kA)

Short Circuit Making Current(KA)

Phase Distance(mm)



















Environmental conditions

Ambient air temperature

+60℃ to -30℃,daily temperature difference: 30℃.(Actually upon the temperature of insulators)

Relative humidity

<90% (daily mean)

Seismic intensity

No higher than 8


No higher than 1000m (if the product is to be used in plateau, please make a note in the order).

Places without fire or explosion hazards, or heavy dust, chemical corrosion or violent vibration.

Operating Interlock Machanism

Production Capacity 

1.Annual Capacity: 30000 earthing switches

2.Over 30 machines,like CNC lathe, CNC milling machine, CNC bending, Automatic welding machine, Punching, Shearing machine etc

3.All kinds of Inspection Equipments:

switch mechanical characteristics tester, rockwell hardness tester, automatic spring tension and compression tester, circuit resistance tester, eddy current conductance tester, multifunctional electrolytic thickness tester, salt spray test and others

Professional research and development, strict inspection, perfect after-sales service.




Jiangshan Electrical Technology Development Co., Ltd.,Founded in 1994,focus on grounding switch,Isolation switch,Transmission gear R&D and production.Science & Technology Enterprise of Zhejiang Province,13 Patents for Utility Models,2 Patents for Invention and 2 Patents in USA.Accumulated lots of experience in R&D and Quality Control which earned us a good reputation within the market. Professional research and development, strict inspection, perfect after-sales service.

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