121-702

This premium fan disc high limit control switch is a critical safety component designed for residential furnace and HVAC systems. As a thermal-actuated limit sensor, it monitors the heat exchanger's temperature, automatically shutting down the heating element or burner if internal temperatures exceed safe operating limits. This replacement limit switch prevents overheating and potential damage to your heating system, ensuring reliable operation and peace of mind. Whether you are performing routine HVAC maintenance or repairing a malfunctioning blower fan, this disc-style switch provides precise temperature regulation and circuit protection. Its durable construction is engineered to withstand high-heat environments, making it a dependable choice for restoring the safety and efficiency of your forced-air heating unit.
Type: Fan Disc High Limit Control Switch
Size: Small
Application: Used as a safety cutout and fan control in gas furnaces, electric heaters, and central HVAC units to prevent overheating and regulate blower motor timing.
Specifications: Thermal-sensitive disc actuator; standard mounting flange for HVAC ducting; two-terminal electrical connection.