Overload relays are an important part of any engine control system. Its main function is to protect the motor from overheating due to overload or other electrical devices. The relays work by monitoring the current drawn by the motor and cutting off power to the motor if it exceeds a predetermined limit.

The use of overload relays has many advantages. First, it helps prevent engine damage that can lead to expensive treatment and downtime. Second, it increases safety by preventing electric shock and other hazards from overheating.

Advances in technology have made modern overload relays more advanced and reliable than ever before. They can detect and respond to various electrical faults such as overload, phase loss or reversal, and short circuits. In addition, overcurrent relays are durable and designed for long life and minimal maintenance.