2CSR275075R3254

The ABB DSB201 M AC-C25/0.3, product code 2CSR275075R3254, is a residual current circuit breaker with overcurrent protection (RCBO) designed to protect compatible low-voltage electrical circuits against overloads, short circuits and earth-leakage faults.

The device has a rated current of 25 A, a C-type tripping characteristic and a rated residual operating current of 300 mA (0.3 A). Its Type AC residual-current detection is designed to respond to sinusoidal alternating residual currents. The 1P+N configuration is intended for compatible single-phase electrical installations. Its compact two-module design supports DIN-rail mounting in distribution boards and electrical panels.

This RCBO is suitable for residential, commercial and industrial distribution applications where its current rating, residual-current sensitivity and breaking capacity meet the installation requirements. A 300 mA residual-current setting is generally used for installation or equipment protection, rather than as a substitute for 30 mA additional protection against electric shock where required. Installation and selection should follow ABB's technical documentation and applicable electrical standards.