000-648

This Lennox Limit Switch is a critical safety component designed for high-performance HVAC systems. Functioning as an auto-reset high limit control, it monitors the internal temperature of your furnace or air handler to prevent overheating. When the system reaches the designated safety threshold, this switch opens the electrical circuit to shut down the heating element or burner, protecting the heat exchanger from thermal damage. The auto-reset feature ensures that once the unit cools to a safe temperature, the switch automatically closes to resume normal operation. This fan disc-style thermal switch is a vital replacement part for maintaining the safety, reliability, and efficiency of residential and commercial heating equipment.
Type: High Limit Control Switch
Size: Standard Fan Disc
Application: Commonly used in gas furnaces, electric air handlers, and heating units to provide over-temperature protection and system safety monitoring.
Specifications: Temperature Rating: L210-30F (Opens at 210°F, Closes at 180°F); Reset Type: Automatic; Switch Type: Fan Disc / Thermostatic Disc.