Overload relay is an electrical device used to protect electric motors. It can monitor the working status of the motor. When the motor is running, if it encounters an abnormal situation such as overload or short circuit, the Overload relay can automatically cut off the circuit immediately to protect the motor from damage.

By detecting parameters such as the motor's current and temperature in real time, the overload relay can detect abnormalities in the motor in time and automatically cut off the circuit to avoid damage to the motor.

In short, Overload relay is an indispensable key device in modern industrial production. Its role is not only to protect the motor, but also a necessary means to improve production efficiency and ensure personnel safety. Therefore, we should pay more attention to its application and development.