Earth-leakage circuit breaker
Electrical safety device / From Wikipedia, the free encyclopedia
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"ELCB" redirects here. For the company formerly known as ELCB, see East Lancashire Coachbuilders.
An earth-leakage circuit breaker (ELCB) is a safety device used in electrical installations with high Earth impedance to prevent shock. It detects small stray voltages on the metal enclosures of electrical equipment, and interrupts the circuit if a dangerous voltage is detected. Once widely used, more recent installations instead use residual-current devices (RCDs, RCCBs or GFCIs) which instead detect leakage current directly.
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