Trane THT0660 Auto Limit Switch 115-155 Deg F

The Trane THT0660 Auto Limit Switch is a safety device that is manufactured for use only in Trane HVAC appliances. It protects the system from possible overheating damage through the application of bi-metal technology. Bi-metal is a material that changes its shape concerning temperature, either bending or expanding. In the Trane, the bi-metal is adjusted for a certain range, which is usually between 115 and 155 degrees Fahrenheit. When the surrounding temperature rises beyond this limit, the bi-metal triggers a switch to remove the power supply to the HVAC system. This self-stopping mechanism helps protect critical components from heat and helps guarantee the safe, reliable operation of Trane HVAC equipment which is a small but essentialpart of your HVAC system.