121-073

Ensure the safety and efficiency of your heating system with this high-performance high-limit control switch. Designed as a critical safety component for HVAC systems, this 180-degree Fahrenheit thermal limit switch monitors internal temperatures to prevent overheating. When the system reaches its maximum safe operating temperature, the switch automatically interrupts the circuit, protecting the heat exchanger and surrounding components from thermal damage. This snap-action fan disc switch is a vital replacement part for maintaining residential gas furnaces and electric heaters, ensuring reliable thermal protection and peace of mind. Ideal for HVAC technicians and DIY homeowners performing furnace maintenance or repairing a heater that is short-cycling or failing to ignite due to a faulty safety sensor.
Type: High Limit Control Switch
Size: Standard Fan Disc
Dimensions: Not specified × Not specified × Not specified
Application: Commonly used in residential gas furnaces, air handlers, and forced-air heating systems to monitor plenum temperature and provide high-temperature cutout protection.
Specifications: Temperature Rating: 180 Degrees Fahrenheit (82 Degrees Celsius); Switch Logic: Normally Closed (NC); Reset Type: Automatic; Configuration: Two-terminal snap-disc.