Carrier HH18HA493 Auto Limit Switch 101°F-200°F

The Carrier HH18HA493 Auto Limit Switch is a thermal safety control part used to cut electrical power when the temperature reaches 200°F and turn back on when the temperature drops to 101°F. It operates a temperature-sensitive element to cut the circuit at the high-limit point and reconnect it when safe conditions are regained to prevent overheating of burners, heat exchangers and other parts. This limit switch is installed in the control circuit at specified high-heat locations, and its operation improves the operations and facilitates the safe operation of residential and commercial heating, ventilation, and air conditioning systems.