York S1-7990-3591 Auto Reset Limit Switch 150°F-180°F

The York S1-7990-3591 Auto Limit Switch is a protective part that is used in the HVAC system to stop equipment operation when it reaches the required high temperature. This switch works within a temperature range of 150°F to 180°F and contains a temperature-actuated element that produces an electrical response upon sensing a change in the environment temperature. This signal can further turn on a relay, solenoid, or any other control part and hence makes the equipment inaccessible to cause further damage. This auto limit switch has several advantages such as protection of the equipment, reduction of maintenance due to overheating failures, safety of the personnel working around the equipment, and high system reliability.