(Package of 12 Pieces) Miniature Circuit Breaker (MCB) / supplementary protector - UL 1077 - NOARK (B1E series) - 10A rated current - B-curve - 1-pole (1P) - 5kA (277Vac) / 10kA (60Vdc) interrupting rating - 277Vac / 125Vdc rated voltage - box lug connections - DIN rail mounting (35mm width) - equivalent to 1000428