5SU1654-0KK20 SIEMENS

The 5SU1654-0KK20 from Siemens is a Residual Current Circuit Breaker with Overcurrent protection (RCBO), designed to offer comprehensive protection against both short circuits and residual currents. This RCBO has a breaking capacity of 10 kA, making it suitable for applications where high fault currents are possible. It features a 1P+N (one pole plus neutral) configuration, ensuring that both the phase and neutral conductors are protected. The device is a Type AC RCBO, which means it is designed to detect sinusoidal alternating residual currents. With a sensitivity of 300 mA, it provides a balance between protection against earth faults and minimizing nuisance tripping. 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 20 A and an AC voltage (Un AC) of 230 V, making it compatible with standard residential and commercial 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. It is ideal for use in residential, commercial, and industrial applications to protect against electrical shock and fire hazards caused by ground faults.