Technical Specification Pole:one pole,two pole,three pole,four pole Rated voltage:110/230/400V Rated frequency:50/60Hz Rated short-circuit Interrupting capacity:10KA Electric endurance:In the case of Un,In and COS=0.90 and the 63A and below ,it is eight-thousand times of cycles;in the case of 80A to 100A.it is 1500 times of cycles(Each times of cycle includes one time of making operation and one minute of breaking operation). Voltage endurance:Power frequency voltage endurance 2000V(1 min),pulse voltage endurance(1.2/50s) Impact resistance performance:Withstand the impact of 10ms and 20g at least 18 times,and withstand the impact off 5ms and 40g at least 18 times,and withstand the shake of 10-55Hz at least half an hour.