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  •   40.5KV Indoor AC High Voltage Disconnect Switch Indoor Earthing Switch JN22B-40.5/31.5
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40.5KV Indoor AC High Voltage Disconnect Switch Indoor Earthing Switch JN22B-40.5/31.5

Model: JN22B-40.5/31.5


The grounding switch is a type of electrical switch that is used to connect or disconnect an electrical circuit from the ground. It is typically used to provide a safe path for electrical current to flow to the ground in the event of a fault or short circuit.
  • General
  • Technical Parameter
  • Product definition


    JN22B- 40.5/31.5 series indoor HV earthing switch is researched and developed by XI'AN HV Electric research organization, with advanced design and steady performance, simple structures, simple mounting end adjustment, suitable for electric power system with 40.5KV, Three- phase, AC 50Hz.As an earthing protection, it can be used in KYN口- 40.5 or other kinds of switchgears. It is complied with GB 1985- -2004 and IEC129 standard.

    Working condition

    O Altitude: ≤1000m; O Ambient temperature:- 10°C ~+40°C ; O Earthquake intensity:≤8 degree; O Appliable in the place without corrosive, flammable gas and water place. Order notes: 1.Indicate product specification, rated voltage stability current, central distance between poles. 2.If bevel gear mechanism needed,please indicate right or left operation mechanism according to the operation position shows in the drawing above. 3.If sensors with electric display device needed, please indicate type NO. 4.Please consult US if any special request.



  • No. ltem Unit Data
    1 Rated voltage KV 35
    2 Maximum voltage KV 40.5
    3 Rated short time withstand current KA 31.5
    4 Rated short circuit withstand time S 4
    5 Rated short circuit making current KA 80
    6 Rated peak withstand current KA 80
    7 Rated insulation level 1 main power frequency withstand voltage KV 95
    Lightning Impulse withstand voltage 185
    8 Central distance between poles MM 300;350;400
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