5SU1356-1KK40 SIEMENS

The 5SU1356-1KK40 is a Residual Current Circuit Breaker with Overcurrent protection (RCBO) from Siemens, designed to provide comprehensive protection against both overload/short circuit and residual current faults. This RCBO has a breaking capacity of 6kA, suitable for standard residential and commercial applications. It features a 1P+N configuration, meaning it protects one phase and the neutral conductor. The device is Type AC, which detects AC residual currents. With a sensitivity of 30mA, it quickly disconnects the circuit in the event of a ground fault, minimizing the risk of electric shock. The C-characteristic tripping curve makes it suitable for circuits with moderate inrush currents. It is rated for a nominal current (In) of 40A and an AC voltage (Un) of 230V. This RCBO combines the functions of a circuit breaker and a residual current device in a single compact unit, saving space in the distribution board and simplifying installation. It ensures reliable protection for people and equipment against electrical hazards.