ABB GSH204 AC-C10/0.03 is a residual current circuit breaker (RCCB) with overcurrent protection (RCBO) designed for protection of electrical installations against earth leakage (residual current), overload, and short-circuit faults. It provides reliable personnel and equipment protection, combining both residual current detection and overcurrent protection in a single device. This model is suitable for residential, commercial, and light industrial applications.