543-260

Ensure the safety and efficiency of your residential heating system with this professional-grade 3-inch high limit switch. Designed as a critical thermal safeguard, this furnace limit control monitors the heat exchanger's temperature to prevent overheating. When temperatures exceed the safe operating threshold, the switch automatically interrupts the burner circuit, protecting your HVAC equipment from damage and ensuring home safety. This replacement thermal sensor is essential for furnace repair when the existing switch fails to cycle properly or causes the system to shut down prematurely. Featuring a 260°F cutout and a 40°F reset differential, it provides reliable, long-lasting performance for standard forced-air heating systems.
Type: High Limit Control Switch
Size: 3-inch
Dimensions: 3 in × Not specified × Not specified
Application: Used in residential gas and electric furnaces, HVAC systems, and forced-air heating units as a safety cutout and temperature regulator.
Specifications: Temperature Open: 260°F; Temperature Close: 220°F (40°F Differential); Switch Type: Normally Closed (NC); Application: Thermal safety limit.