5SU1653-7KK10 SIEMENS

The 5SU1653-7KK10 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 4.5 kA, making it suitable for residential and commercial 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 A RCBO, which is sensitive to both AC and pulsating DC residual currents, offering enhanced protection against a wider range of fault types. With a residual current tripping sensitivity of 300 mA, it provides a balance between protection against leakage currents and avoiding nuisance tripping. The RCBO has a C-characteristic tripping curve, making it suitable for circuits with moderate inrush currents, such as lighting and general-purpose circuits. It is rated for a nominal current (In) of 10 A and an AC voltage (Un AC) of 230 V, making it compatible with standard European power systems. This RCBO combines the functions of a miniature circuit breaker (MCB) and a residual current device (RCD) in a single compact unit, saving space in the distribution board and simplifying installation. It helps to protect people from electric shock and prevent fire caused by insulation faults.