Description
The Lennox 73K18 Auto-Limit Switch is a disc shaped safety device used in Lennox HVAC equipment. It has normally closed contact, however it means that power passes through until a certain temperature is attained. In this case the switch turns off or the circuit opens when the surrounding temperature is between 140°F and 170°F to protect your HVAC system from overheating. This automatic reset limit switch makes the operation smooth by resetting the system once the temperature drops below 140°F Because in various HVAC equipment.
