5SU1653-1KK20 SIEMENS

The 5SU1653-1KK20 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 offers a breaking capacity of 4.5 kA, ensuring reliable interruption of fault currents to prevent damage to equipment and wiring. It features a 1P+N configuration, meaning it protects one phase and the neutral conductor, making it suitable for single-phase applications. The device is a Type AC RCBO, which detects sinusoidal alternating residual currents. With a sensitivity of 300 mA, it trips when the residual current exceeds this threshold, minimizing the risk of electrical shock. It has a C-Characteristic tripping curve, which means it allows for moderate inrush currents without tripping, making it suitable for circuits with inductive loads. The rated current (In) is 20 A, indicating the maximum continuous current the device can handle without tripping under normal conditions. It is designed for a rated voltage (Un AC) of 230 V, which is standard for many residential and commercial power systems. This RCBO combines the functionality of a circuit breaker and a residual current device in a single compact unit, saving space in the distribution board and simplifying installation. It enhances electrical safety by protecting against both overcurrents and earth leakage faults.