5SU1353-1KK20 SIEMENS

The 5SU1353-1KK20 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 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 AC RCBO, which detects sinusoidal alternating residual currents. With a sensitivity of 30 mA, it quickly disconnects the circuit upon detecting even small leakage currents, preventing electrical shocks and fire hazards. 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 20 A, suitable for circuits with a maximum load of 20 amperes. The rated voltage (Un AC) is 230 V, which is the standard voltage for many single-phase applications. This RCBO combines the functions of a circuit breaker and a residual current device in a single compact unit, saving space in the distribution board and simplifying installation.