1SYF272027R2634

The ABB DSB202M AC-C63/100mA, part number 1SYF272027R2634, 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.

The device has a rated current of 63 A, a C-type tripping characteristic and a rated residual operating current of 100 mA (0.1 A). Its Type AC residual-current detection is designed to respond to sinusoidal alternating residual currents. The two-pole configuration is suitable for compatible single-phase circuits, and its four-module construction supports DIN-rail installation in electrical distribution boards and control panels.

The RCBO combines overcurrent protection and residual-current detection in a single device. It is suitable for residential, commercial and industrial distribution applications where the circuit rating, cable capacity, fault-current conditions and leakage-protection requirements are compatible with its specifications. The 100 mA sensitivity is generally used for installation or equipment protection and does not replace 30 mA additional protection against electric shock where required. Installation should follow ABB's technical documentation and applicable electrical standards.