121-089

This premium high limit control switch is a vital safety component designed for HVAC systems, specifically residential and commercial furnaces. As a fan disc style switch, it acts as a thermal safeguard by monitoring the internal temperature of the heat exchanger. When the system reaches the 155°F threshold, the switch automatically opens the electrical circuit to interrupt the heating cycle, preventing the appliance from overheating and protecting your property from potential thermal damage. This reliable replacement part is essential for restoring the safe and efficient operation of your heating system, especially if your current unit is tripping prematurely or failing to regulate heat levels correctly.
Type: Fan Disc High Limit Control Switch
Size: Standard
Application: Used as a safety cut-off in forced-air furnaces, air handlers, and heating units to prevent overheating by monitoring cabinet temperatures.
Specifications: Opening Temperature: 155°F; Switch Type: Normally Closed (Opens on temperature rise); Category: Fan and Limit Control.