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The Lennox L200-40F Limit Switch is an essential thermal safety component designed for HVAC systems and furnaces. Functioning as a high-limit control, this fan disc switch monitors the air temperature within the heating unit and automatically breaks the electrical circuit if internal temperatures reach a critical threshold of 200°F. This prevents overheating and protects the heat exchanger from damage. Featuring an automatic reset mechanism, the switch restores power once the temperature drops by 40°F. This durable replacement switch is critical for maintaining safe furnace operation and ensuring the longevity of your heating equipment. It is ideal for technicians and property owners looking for a reliable solution to thermal overload issues in commercial and residential forced-air systems.
Type: High Limit Control Switch
Size: Compact Standard Fan Disc
Application: Commonly used in residential and commercial gas furnaces, electric heaters, and rooftop HVAC units to provide high-temperature safety protection and airflow monitoring.
Specifications: Opening Temperature: 200°F; Temperature Differential: 40°F (Closes at 160°F); Reset Type: Automatic; Contact Configuration: Normally Closed; Mounting: Flange-mount disc.