An Earth-leakage circuit breaker (ELCB) is a safety device used in electrical installations with high Earth impedance to prevent shock.

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Earth Leakage Circuit Breaker (ELCB) is a safety device that prevents earth leakage. The earth leakage circuit breakers were originally voltage detecting devices; however, they have recently been replaced with current sensing devices. The current ELCB has been renamed RCCB or RCD; however, the voltage ELCBs are still referred to as ELCBs despite being obsolete.

ELCB’s Purpose

The basic purpose of an ELCB is to protect against electrical shock. It keeps track of any leakage current that escapes the circuit via an unexpected channel. Overloading and short circuit current are not protected.


  • It aids in the prevention of electrical shocks.
  • They are less sensitive and don’t trip as much.
  • They’re more affordable.

ELCB’s applications

To prevent current leakage use ELCB. Electrical shocks and system problems are caused by the current leakage. It rapidly interrupts the circuit to prevent damage to the associated circuits. They’re crucial in moist areas where electrical shocks are more likely.

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