762-112

This premium L155-40F Auto Reset Disc Limit Switch is an essential safety component for residential heating systems and HVAC equipment. Designed to function as a high-limit control, this bimetal disc switch monitors the internal temperature of your furnace or air handler to prevent overheating. When the system reaches the pre-set temperature of 155°F, the switch opens the circuit to safely shut down the heating element or burner. As an auto-resetting model, it automatically closes the circuit once the temperature drops by 40°F, allowing your unit to resume normal operation without manual intervention. Replacing a faulty or worn limit switch is crucial for maintaining the safety, efficiency, and longevity of your forced-air heating system.
Type: Fan Disc High Limit Control Switch
Size: Standard bimetal disc size
Application: Used primarily in forced-air furnaces, air handlers, and HVAC heating systems as a safety cut-off and temperature regulation device.
Specifications: Temperature Open: 155°F; Temperature Close: 115°F (40°F differential); Reset Type: Automatic; Circuit: Normally Closed (NC)