000-232

The Lennox High Limit Switch is a vital safety component designed for high-performance HVAC systems and furnaces. This L170-30F fan disc control acts as a thermal safeguard by monitoring internal equipment temperatures. When the heat exceeds a safe threshold of 170°F, the switch automatically opens to cut power to the heating element or burner, preventing overheating and potential system damage. Featuring an automatic reset functionality, the switch restores the electrical circuit once the temperature drops by 30°F. This durable thermal protection switch is essential for maintaining the operational integrity and safety of forced-air heating units, commercial rooftop units, and air handlers.
Type: Fan Disc High Limit Control Switch
Size: Standard Fan Disc
Application: Commonly used in residential and commercial furnaces, HVAC air handlers, and rooftop heating units to prevent heat exchanger overheating.
Specifications: Cut-out Temperature: 170°F; Differential/Reset: 30°F; Reset Type: Automatic; Switch Logic: Normally Closed (NC); Mount Type: Surface Mount Disc