A motor overload relay is a protective device that is designed to prevent an electric motor from being damaged due to an overload of current. The overload relay monitors the current that the motor is drawing and, if the current exceeds a predetermined level, the relay will shut off the power to the motor. This protects the motor from being damaged due to an excessive current draw, which can occur if the motor is forced to work too hard. The overload relay can also be used to protect the wiring and other components in the circuit, since an excessive current draw can also cause damage to these components.
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