Detailed Product Description FM3 series moulded case circuit breaker (hereinafter called circuit breaker) is applicable circuit of AC 50Hz/60Hz, rated ... -5-1GBT14048.5 Electrical equipment of electromechanical control circuit breaker Features and Benefits Rated insulation voltage: 800V; Rated ... of zero arc-over distance); Vibration proof, the breaker is an idea l product for and shipping.