(Package of 3 Pieces) Miniature Circuit Breaker (MCB) / supplementary protector - UL 1077 - NOARK (B1E series) - 63A rated current - C-curve - 4-poles (4P) - 5kA (480Y/277Vac) interrupting rating - 480Vac / 125Vdc rated voltage - box lug connections - DIN rail mounting (35mm width) - equivalent to 1000650