5SU1454-1KK40 SIEMENS

The 5SU1454-1KK40 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 is a 1P+N (one pole plus neutral) device, suitable for single-phase electrical systems. It has a breaking capacity of 10 kA, indicating its ability to safely interrupt high fault currents. The device is Type AC, meaning it is designed to detect and respond to alternating current residual currents. With a sensitivity of 100 mA, it trips when a leakage current of 100 milliamperes or greater is detected, preventing electrical shocks and fire hazards. The C-characteristic tripping curve indicates that it is suitable for circuits with moderate inrush currents, such as lighting and general-purpose circuits. It has a rated current (In) of 40 A and a rated voltage (Un) of 230 V AC. 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. It offers reliable protection for people and equipment against electrical faults.