1SYS273112R0254

The ABB 1SYS273112R0254 Miniature Circuit Breaker (MCB) is a low-voltage electrical circuit protection device from ABB’s System pro M compact SB200M series. It is designed to protect electrical distribution circuits against overloads and short circuits in residential, commercial and industrial installations.

The device has a rated current of 25 A and a C-type tripping characteristic, making it suitable for circuits supplying compatible loads with moderate starting or inrush currents. Its rated short-circuit breaking capacity is 10 kA, enabling it to interrupt fault currents up to the specified capacity under the applicable operating conditions.

The circuit breaker features a three-phase-plus-neutral configuration (3P+N), also referred to as TPN. It incorporates a thermal tripping mechanism for overload protection and an electromagnetic tripping mechanism for rapid response to short-circuit faults. These mechanisms help protect electrical conductors and connected equipment from damage caused by excessive current.