how does a start relay work

A start relay is a crucial component in refrigeration systems and compressor units. It works by providing the necessary electrical signal to start the compressor motor. When the refrigerator or compressor is turned on, the start relay receives an electrical signal from the thermostat or control board. This signal causes the start relay to close, allowing electrical current to flow to the compressor motor, which then starts the cooling process. Once the compressor motor is up and running, the start relay opens, allowing the compressor to run independently without the need for the start relay. This simple yet essential function ensures the proper operation of the refrigeration system, allowing for efficient cooling and temperature control. The start relay is designed to handle high electrical loads and is a critical component in maintaining the functionality of refrigeration units.