The ABB GS261‑C6/0.03 is a residual current circuit breaker with overcurrent protection (RCBO) designed for electrical distribution and safety in residential, commercial, and industrial panels. It integrates both short‑circuit/overload protection and earth leakage (residual current) detection in a single compact unit. The breaker is rated C‑curve for tripping characteristic, making it suitable for circuits with moderate inrush currents such as lighting, socket outlets, and general loads, while also providing protection against dangerous leakage currents and electric shock hazards. The device trips when the difference between phase and neutral currents exceeds 30 mA, indicating a ground fault condition, and interrupts the circuit to improve safety. GS261 series units are typically 2‑pole devices (phase + neutral) for single‑phase systems.
