About The EARTH LEKAGE RELAY

Please please do us all a favor and first find out what a RELAY is and does. Then do the same for a CB. If you've known the difference you wont be asking this question.

Thank you.

In an ELCB, the breaking device is integral with the sensing device. Whereas in an earth leakage relay you don't have an integral breaking device. The relay will only have output contacts, which should be wired to the trip coils of an associated circuit breaker.

They can be interchangably used.