543-024

The L160-30F High Limit Switch is a critical safety component designed for forced-air heating systems and furnaces. This 3-inch limit control sensor monitors the internal temperature of the heat exchanger, acting as a vital fail-safe by automatically cutting power to the burner or heating elements if the unit exceeds safe operating limits. This specific switch is engineered to open the circuit at 160°F and features a 30°F differential, meaning it will reset once the system has cooled to a safe temperature. If your furnace is short-cycling or failing to stay on, a malfunctioning thermal limit switch may be the cause. This durable replacement part ensures your HVAC system operates efficiently while preventing overheating and protecting your home from fire hazards.
Type: High Limit Control Switch
Size: 3-inch insertion
Dimensions: 3 in
Application: Commonly used in residential gas furnaces, electric air handlers, and forced-air heating equipment as a primary thermal safety cutoff.
Specifications: Open Temperature: 160°F; Reset Temperature: 130°F (30°F Differential); Normally Closed (NC) circuit; Fixed temperature setting.