543-019

Ensure the safety and efficiency of your heating system with this premium 3-inch high limit control switch. Designed as a critical safety component for forced-air furnaces and HVAC units, this thermal sensor monitors the internal temperature of your appliance. If the system exceeds a safe operating threshold, the switch automatically breaks the electrical circuit to prevent overheating and potential damage to the heat exchanger. Once the temperature drops to a safe level, the automatic reset feature restores functionality. This durable high limit switch is an essential replacement part for maintaining proper airflow temperature and protecting your home's climate control system from thermal overload.
Type: High Limit Control Switch
Size: 3-inch insertion depth
Dimensions: 3 in
Application: Forced-air furnaces, residential HVAC systems, air handlers, and gas or electric heating units.
Specifications: Trip Temperature: 170°F; Reset Differential: 30°F; Switch Type: Normally Closed (NC); Reset Type: Automatic; Mounting: Flange mount.