1SYS273112R0204

The ABB 1SYS273112R0204 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 provide reliable protection against overload currents and short-circuit faults in electrical distribution systems used in residential, commercial and industrial applications.

This model has a rated current of 20 A and a C-type tripping characteristic, making it suitable for electrical circuits with moderate inrush currents when correctly selected for the connected load. 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 device features a four-pole configuration arranged for three phases and neutral (3P+N/TPN). Its thermal tripping mechanism provides delayed protection against sustained overloads, while the electromagnetic tripping mechanism responds rapidly to short-circuit conditions. These mechanisms help protect electrical wiring and connected equipment from potentially damaging overcurrent's.