5SU1354-0KK40 SIEMENS

The 5SU1354-0KK40 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 10 kA, ensuring reliable interruption of high fault currents to prevent damage to equipment and wiring. It features a 1P+N (one pole plus neutral) configuration, suitable for single-phase electrical systems. The device is a Type AC RCBO, meaning it is designed to detect AC residual currents. With a sensitivity of 30 mA, it quickly trips in the event of a ground fault, minimizing the risk of electric shock. The B characteristic tripping curve indicates its suitability for applications with moderate inrush currents, such as lighting and general-purpose circuits. It is rated for a nominal current (In) of 40 A and an AC voltage (Un AC) of 230 V, making it suitable for standard residential and commercial power supplies. This RCBO combines the functionality of a circuit breaker and a residual current device in a single compact unit, saving space in the distribution board and simplifying installation. It offers reliable protection against electrical hazards, enhancing safety and preventing damage to electrical installations.