5SU1653-7KK40 SIEMENS

The 5SU1653-7KK40 from Siemens is a high-performance residual current circuit breaker with overload protection (RCBO), designed to safeguard electrical circuits from both overcurrents and residual currents. This RCBO offers a breaking capacity of 4.5 kA, making it suitable for applications where moderate fault currents are expected. It features a 1P+N configuration, meaning it protects one phase and the neutral conductor, ensuring comprehensive protection against electrical hazards. The device is a type A RCBO, which is sensitive to both AC and pulsating DC residual currents, providing enhanced safety compared to type AC devices. With a residual current tripping sensitivity of 300 mA, it offers a balance between protection against leakage currents and minimizing nuisance tripping. The C-characteristic tripping curve indicates that it is designed for circuits with moderate inrush currents, such as lighting and general-purpose circuits. It has a rated current (In) of 40 A, suitable for circuits with a maximum load of 40 amperes. The rated voltage (Un) is 230 V AC, making it compatible with standard single-phase power systems. 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.