1SYF272027R2254

The ABB DSB202M AC-C25/100mA, part number 1SYF272027R2254, is a two-pole residual current circuit breaker with overcurrent protection (RCBO), designed to protect compatible low-voltage electrical circuits against overloads, short circuits and earth-leakage faults.

This device features a rated current of 25 A, a C-type tripping characteristic and a rated residual operating current of 100 mA (0.1 A). Its Type AC residual-current detection responds to sinusoidal alternating residual currents. The two-pole configuration supports switching of compatible single-phase circuits, while the four-module design enables DIN-rail installation in electrical distribution boards and control panels.

The RCBO combines thermal-magnetic overcurrent protection with residual-current detection in one device. It is suitable for residential, commercial and industrial electrical distribution applications where its current rating, residual-current sensitivity and breaking capacity meet the installation requirements. Installation should be carried out by a qualified electrician in accordance with ABB's technical documentation and applicable electrical standards.