... condition of rated 12/17.5KV three phase AC voltage and 50/60Hz frequency 5) It can control ... and protect electric devices of the industry and mine enterprises, generators and transformer sub-station, is a ... perfect product for frequent operating condition Specifications: 1) Rated voltage: 12/17.5kV 2) Rated current: 630, 1250, ... 30,000, 20,000, 10,000 times Medium Voltage Vacuum Circuit Breaker