... device and operates under the condition of rated 12/17.5KV three phase AC voltage and 50/60Hz frequency 5) It can ... a perfect product for frequent operating condition Specifications: 1) Rated voltage: 12/17.5kV 2) Rated current: 630, 1250, 1600, 2000, 2500 ... 4) Mechanical life: 30,000, 20,000, 10,000 times Medium Voltage Vacuum Circuit Breaker