An overload relay is a protective device that is used in electrical circuits to protect electrical equipment from damage caused by excessive current or overloading. The main function of an overload relay is to monitor the current flowing through a circuit and to disconnect the circuit when the current exceeds a predetermined level. This helps to prevent overheating and damage to the equipment, as well as reduce the risk of fire or electrical hazards. Overload relays are commonly used in motor control circuits to protect motors from overheating and burning out due to excessive current.
