Safety switches, also known as residual current devices (RCDs), ground fault circuit interrupters (GFCIs), or earth leakage circuit breakers (ELCBs), are electrical devices designed to prevent electrical shocks and electrical fires. They monitor the flow of electricity in a circuit and can quickly disconnect the power if they detect an imbalance between the live (hot) and neutral wires, which could indicate a leakage of current to the ground or a fault condition.
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