FN12-12 Series Indoor High Volgate Break Switch 1 ISO9001:2000 2 12KV 50HZ 3 Safty,Perfect,Loss energy loss Indoor High Voltage Load Break Switch 12/24kV FN12-12D and FN12-12DRSwitchgear is a rated voltage of 12kV, rated frequency 50Hz three-phase high-voltage switchgear for the division and load current, Loop current, no load transformer and cable charging current, short circuit current of the ...