06" precision capillary orifice stabilizes needle movement and control response in pressure-sensitive switches

making it a critical component for commercial HVAC automation and energy management retrofits

it manages the synchronized operation of the 120V fan motor and the water solenoid valve

it ensures proper fitment and maintains the original equipment’s narrow operating tolerances

delivering a nominal capacity of 42

Carrier HH680502 Limit Switch 340155-7024 06" precision capillary orifice stabilizesThe Carrier HH680502 Limit Switch is a critical safety component designed for precise thermal monitoring in residential and commercial furnaces. This 90 120F auto reset limit switch functions as a primary high limit control, specifically engineered to open the electrical circuit if internal plenum temperatures exceed the 120F threshold. Once the heat exchanger cools to the 90F reset point, the switch automatically closes, restoring system operation.