discount Electrical Components ZN63A(VS1)-12 CIRCUIT BREAKER 1.1 Suitable for three-phase AC, 50Hz, rated voltage of 12kV power system; 1.2 Can be used as a protection and control unit for industrial and mining enterprises and substation equipment; 1.3 Can be used for KYN28-12 and other central switch cabinets and fixed switch cabinets; 1.4 The main circuit of the circuit breaker can be used in...