543-038

Ensure the safety and efficiency of your heating system with this professional-grade 3-inch high limit switch. Designed as a critical safety component for furnaces and HVAC units, this temperature limit control acts as a thermal cutout to prevent overheating. The switch is engineered to automatically interrupt the electrical circuit if the internal temperature exceeds safe operating parameters, specifically tripping at 250°F and resetting after a 30°F cooling period. This reliable replacement part is essential for maintaining optimal airflow and protecting your appliance from heat-related damage. Whether you are performing routine maintenance or a critical repair, this high-limit sensor provides the precision and durability needed for consistent climate control performance.
Type: High Limit Control Switch
Size: 3-inch probe insertion
Dimensions: 3 in
Application: Gas-fired furnaces, residential HVAC systems, rooftop heating units, and commercial forced-air climate control systems.
Specifications: Temperature Open: 250°F; Temperature Close: 220°F (30°F differential); Automatic reset; Fixed temperature limit.