120-821

This High Limit Control Fan Disc Switch is a critical safety component designed for heating systems and HVAC equipment. Functioning as a thermal protection device, it prevents equipment from overheating by opening the electrical circuit when the internal temperature reaches 185 degrees Fahrenheit. Once the system cools down to a safe 155 degrees Fahrenheit, the switch automatically closes, restoring operation. Whether you are repairing a residential furnace or a commercial heating unit, this high-quality disc switch ensures reliable temperature regulation and equipment longevity. It is an essential replacement part for maintaining the safe and efficient operation of forced-air heating systems and prevents potential damage caused by excessive heat buildup.
Type: Fan Disc High Limit Control Switch
Size: Small
Application: Commonly used in furnaces, air handlers, and forced-air heating systems to monitor heat exchanger temperatures and provide safety shut-off capabilities.
Specifications: Opening Temperature: 185°F; Closing Temperature: 155°F; Automatic reset; Snap-action disc sensor.