Description
The Rheem-Ruud 470018 Auto Limit Switch is a safety device used in HVAC equipment to prevent equipment from overheating. It turns off the system once the temperatures rise to a dangerous 145°F and turn the system back on when the temperatures drop to 125°F. This switch is normally closed and has an SPST configuration and it is designed for use in areas that have moisture and low load. It has an auto-reset mechanism to enhance its operation without requiring any human interference. It is therefore clear that the limit switch improves the reliability and safety of the system by avoiding equipment damage and possible hazards. It is mostly applied in furnaces, air handlers, and other HVAC equipment to protect the equipment from getting hot and consequently increasing its longevity.
