120-673

This professional-grade HVAC high-limit control switch is an essential safety component designed for residential and commercial heating systems. As a fan disc-style thermal sensor, it monitors the internal temperature of furnaces and air handlers to prevent overheating. When the system exceeds the safe operating threshold, the switch opens to interrupt the heating cycle, protecting the appliance from damage and ensuring home safety. Featuring an automatic reset design, it restores functionality once the system cools by its specific temperature differential. This durable replacement part is ideal for maintaining the reliability and efficiency of forced-air heating units.
Type: Fan Disc High Limit Control Switch
Size: Standard small disc format
Application: Used in forced-air furnaces, air handlers, and HVAC heating systems to provide thermal overload protection.
Specifications: Temperature Open: 175°F; Temperature Close: 145°F; 30°F Differential; Automatic Reset; SPST (Single Pole Single Throw) configuration.