1SYS273112R0404

The ABB 1SYS273112R0404 Miniature Circuit Breaker (MCB) is a low-voltage electrical protection device belonging to 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 commercial buildings, industrial facilities and other compatible electrical installations.

This model features a rated current of 40 A, a C-type tripping characteristic and a rated short-circuit breaking capacity of 10 kA. The C-curve characteristic makes it suitable for compatible circuits with moderate starting and inrush currents, subject to proper circuit protection coordination and load requirements.

The circuit breaker uses a thermal tripping mechanism to respond to sustained overload conditions and an electromagnetic tripping mechanism for rapid interruption of short-circuit currents. Its current-limiting design helps reduce the energy associated with electrical faults, protecting wiring and downstream equipment when the device is correctly selected and installed.