1SYS272012R0405

ABB SB202M-B40 Miniature Circuit Breaker, Part Number 1SYS272012R0405, a high-quality low-voltage electrical protection device designed for residential, commercial and industrial electrical distribution applications.

The ABB SB202M-B40 belongs to ABB's System pro M SB200M series of miniature circuit breakers. It is designed to provide protection against electrical overloads and short-circuit faults, helping ensure safe and reliable operation of electrical distribution systems.

Featuring a rated current of 40 amperes, a double-pole (2P) configuration, B-curve tripping characteristic and 10kA rated short-circuit breaking capacity, this miniature circuit breaker is suitable for correctly designed low-voltage electrical installations.

The double-pole configuration provides thermal-magnetic overcurrent protection in both poles, enabling simultaneous disconnection of two conductors during manual switching or protective tripping. Unlike a single-pole plus neutral MCB, which normally protects only the phase conductor, the ABB SB202M-B40 incorporates overcurrent protection in both poles.