Programmable Thermostat

This high-limit disc-style limit switch/thermostat is engineered to provide critical overheat protection for HVAC systems and compatible equipment. Featuring automatic reset functionality, this device monitors temperature conditions and automatically opens at 140 Degrees F to shut down systems when overheating is detected, then closes at 110 Degrees F when safe operating temperatures are restored. The 30 Degrees F temperature differential ensures reliable operation and prevents nuisance shutdowns from minor temperature fluctuations. The single pole single throw (SPST) configuration offers straightforward electrical control suitable for standard HVAC applications. Its compact 3/4 inch disc design allows for easy installation in tight spaces and integrates seamlessly into existing equipment installations. The auto-reset feature eliminates the need for manual intervention after thermal events, reducing downtime and maintenance requirements in commercial and industrial heating and cooling systems. This replacement switch is compatible with York equipment and various other HVAC manufacturers' systems requiring high-limit protection. The proven disc-style construction delivers consistent, reliable performance across multiple heating cycles and environmental conditions. Ideal for rooftop units, furnaces, air handlers, and other HVAC equipment where thermal safety is essential, this limit switch provides dependable equipment protection at an economical price point.