An essential electrical safety tool that guards against electric shock and other electrical dangers is a residual-circuit current breaker (RCCB). It detects the difference in electric current flow between the live and neutral wires and shuts off the circuit if a fault is found. In residential, commercial, and industrial applications, an residual circuit current breaker is often placed in the distribution board or consumer unit. Residual-Current Circuit Breakers are intended to offer better defense against electrical fires and shocks brought on by other electrical faults, including ground faults. They are a crucial part of electrical safety and are needed in most nations due to laws and regulations. Advantages of Using Residual-Current Circuit Breakers in Electrical Systems Enhanced Safety Residual-current circuit breakers offer enhanced safety by instantly cutting off the power supply to a circuit in the event of an earth leakage or a fault current. This reduces the risk of electric shock or fire caused by an insulation fault.