ELCB or Earth Leakage Circuit Breaker is a electrical device used to sense currents leakage and stops the power supply to avoid from shock to any person.
Earth-leakage circuit breakers (ELCBs) are safety devices used in electrical equipment with high ground impedance to prevent electric shock. It detects small parasitic voltages in the metal housing of electrical equipment and shuts off the circuit when the voltage level exceeds the hazard threshold.
Surgery. ELCB is a special type of latch relay that has power from the input mainstream of a building connected through switch contacts so that ELCB powers off when a ground fault is detected. ELCB detects the current fault current to the ground wire (earth) in the equipment that protects it. https://gizalus.com