What is the purpose of relay used on hermetic compressor?

The purpose of a relay used on a hermetic compressor is to control the compressor's operation by managing electrical power to the motor. It acts as a switch, allowing the compressor to start and stop based on the system's pressure or temperature conditions. This ensures efficient operation and protects the compressor from damage due to electrical overload or pressure fluctuations. Overall, the relay contributes to the reliable and safe functioning of the refrigeration or air conditioning system.