NS Moulded Case Circuit Breaker(MCCB) 1.Pole: 3P, 4P 2.Rated ... ~630 NS MCCB (Merlin Gerin Model MCCB) NS series moulded case circuit breaker is one of new type breakers which this ... or harizontal installation. 2, According to use of MCCB: Distribution circuit protection type, motor protection type; 3, According to ... , 400, 500, 600, 630 Rated Insulation voltage: 750V NS Moulded Case Circuit Breaker