5SU1656-0KK40 SIEMENS

The 5SU1656-0KK40 is a Residual Current Circuit Breaker with Overcurrent protection (RCBO) from Siemens, designed to provide comprehensive protection against both short circuits and residual currents. This RCBO has a breaking capacity of 6 kA, indicating its ability to safely interrupt fault currents up to 6000 Amperes. It features a 1P+N configuration, meaning it protects one phase and the neutral conductor, making it suitable for single-phase electrical systems. The device is classified as Type AC, which means it is designed to detect and respond to alternating current residual currents. With a sensitivity of 300 mA, it trips when the residual current exceeds this threshold, preventing electrical shocks and fire hazards. The RCBO has a B characteristic, indicating its tripping behavior for overload protection, suitable for resistive and slightly inductive loads. Its rated current (In) is 40 A, meaning it can handle a continuous current of 40 Amperes under normal operating conditions. The rated voltage (Un) is 230 V AC, making it compatible with standard household and commercial power supplies. This RCBO combines the functions of a circuit breaker and a residual current device in a single compact unit, saving space in electrical panels and simplifying installation.