Contactors and Protection Relays

What is the difference between a relay and a contactor? A contactor is an automatic switcher used to disconnect the main current with a load. It is generally installed in the main circuit to control the load electrical appliances. For example, the contactor can control the switch of the motor, etc. , it is suitable for frequent operation and remote control. Relays belong to electronic controllers and are generally installed in control circuits to regulate, protect and convert circuits.