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40.5KV Indoor Vacuum Circuit Breaker

  • Type: ZN85

  • This vacuum circuit breaker (VCB)is suitable for using in the system of three phase AC 50Hz, 40.5kV for breaking and making load current, over-current, the fault current in the industry and mining enterprise, the power plant and the substation, and also it can be used in the frequent operation situation.
  • Number Item Unit Data
    1 Rated voltage kV 40.5/35
    2 1min power frequency withstand voltage kV 95
    3 Lighting impulse withstand voltage kV 185
    4 Rated frequency Hz 50
    5 Rated current A 1250,1600,2000
    6 Rated short-time withstand current kA 25,31.5
    7 Rated peak value withstand current kA 63,80
    8 Rated short-circuit duration s 4
    9 Rated short-circuit breaking current kA 25,31.5
    10 Rated short-circuit making current kA 63,80
    11 Rated operation sequence   O-0.3s-CO-180s-CO