5SU1654-0KK40 SIEMENS

The 5SU1654-0KK40 from Siemens is a Residual Current Circuit Breaker with Overcurrent protection (RCBO), designed to provide comprehensive protection against both overload/short circuit and residual current faults. This device offers a breaking capacity of 10 kA, ensuring reliable interruption of high fault currents. It features a 1P+N (one pole plus neutral) configuration, suitable for single-phase applications. The RCBO is Type AC, meaning it is designed to detect AC residual currents. With a sensitivity of 300 mA, it trips when the leakage current exceeds this threshold, preventing electrical shocks and fire hazards. The B characteristic indicates its tripping curve, making it suitable for applications with moderate inrush currents. It has a rated current (In) of 40 A and a rated voltage (Un) of 230 V AC. This RCBO combines the functionalities of a circuit breaker and a residual current device in a single compact unit, saving space in electrical panels and simplifying installation. It is ideal for residential, commercial, and industrial applications where both overcurrent and residual current protection are required.