DZ47-63 circuit breaker is used in AC 50/60Hz, rated voltage 230V, 3, 4 poles 400V, rated ... .C45 MCB circuit breaker 1.high breaking capacity2.used in AC 50Hz/60Hz single-pole 240V 3.1/2/3/4P4 ... short-circuit in the system.it is mainly used in AC 50Hz/60Hz single-pole 240V or two, three, four-pole ...