543-501

This professional-grade 3-inch adjustable high limit control switch is a vital safety component for furnaces and forced air heating systems. Engineered to prevent hazardous overheating, this thermal limit switch allows for precise temperature regulation with an adjustable range between 180°F and 250°F. By continuously monitoring the heat within the plenum or heat exchanger, it automatically interrupts the heating circuit if temperatures exceed the safe setpoint, protecting your HVAC equipment from thermal damage and ensuring residential safety. This heavy-duty control is a standard replacement part for maintaining optimal performance and safety in a wide variety of heating applications.
Type: High Limit Control Switch
Size: 3-inch probe length
Dimensions: 3 inches
Application: Used in forced air furnaces, HVAC systems, and residential or commercial heating units to prevent overheating by acting as a safety cutoff.
Specifications: Adjustable temperature range: 180°F to 250°F (L180-L250); 3-inch sensing element; provides high-limit protection for heating circuits.