What is Thermal Overload Relay?

Overload relay is a equipment that detects the current flowing condition of load installation and breaks the power immediately when error occurs. The relays used in MC are thermal overload type and electrical type.

Thermal Overload Relay uses the internal Bimetal element that detects heat occurrence due to the excess current, a method that uses bulge characteristic to open circuit and a Electronic Motor Protection Relay which electrifies the excess current.