Overload relay is an electrical device mainly used to protect motors from overload damage. It is widely used in various machines and equipment, such as conveyor belts in factory product lines, cooling towers and factory machines.

The working principle of the overload relay is that it induces current according to the load condition of the motor. When the current exceeds the value within the predetermined current range, the overload relay will automatically cut off the circuit to avoid overheating and damage to the motor.

In addition to protecting the motor from overload damage, the overload relay can also detect short-term or sustained faults in the circuit and immediately cut off the circuit when detected to avoid accidents.

In short, the use of overload relay is crucial, it helps ensure that machines and equipment operate within normal operating ranges, while also protecting the safety of factory workers. Therefore, Overload relay is a very popular device in various production sites.