NS Moulded Case Circuit Breaker(MCCB) 1.Pole: 3P, 4P 2.Rated ... NS MCCB (Merlin Gerin Model MCCB) NS series moulded case circuit breaker is one of new type breakers which this ... 4, According to operation way: For direct handle operation for external rotary handle operating, formotor operating; 5, According to overload release ... , 500, 600, 630 Rated Insulation voltage: 750V NS Moulded Case Circuit Breaker