5SU1653-1KK40 SIEMENS

The 5SU1653-1KK40 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 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 complete circuit isolation in case of a fault. The device is a Type AC RCBO, which is sensitive to alternating current faults. With a residual current tripping sensitivity of 300 mA, it offers a balance between protection against electrical shocks and nuisance tripping. It has a C-Characteristic tripping curve, making it suitable for circuits with moderate inrush currents, such as lighting and general-purpose circuits. The RCBO is rated for a nominal current (In) of 40 A and an AC voltage (Un AC) of 230 V. This RCBO combines the functions of a circuit breaker and a residual current device in a single unit, saving space in the distribution board and simplifying installation. It is designed to protect people and equipment from electrical hazards, such as electric shock and fire caused by insulation faults.