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 ... MCCB 1, Installation type of MCCB: MCCB are suiable for vertical or harizontal installation. 2, According to use of MCCB: Distribution ... 400, 500, 600, 630 Rated Insulation voltage: 750V NS Moulded Case Circuit Breaker