... , 40, 50, 63 4 poles 1, 2, 3 Detailed specification: DZ65N MCB is an all new high ... breakingcapacity, good reliability of sensitive action, convenient multi-pole assorting, long usinglife etc. They are mainly used ... within the circuit ofAC 50Hz,230V in single pole,400V in double, three and four poles. Meanwhile ... and lighting circuit under the normalcondition. 3 pole circuit breaker mcb switch