ELCB

An earth leakage circuit breaker (ELCB) is a device with two earth terminals used to directly detect currents leaking to earth from an installation and cut the power. They were mainly used on TT earthing systems. By having the assumption of the presence of current in the earth line, it means there is any leaking current from the main incoming live cable, thus the power has to be cut off to ensure the safety. State of ELCB when it cuts the power is called tripped. Every time the ELCB tripped, we can reset it back (connect back the power line) by resetting the trip button.
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