code-compliant install

Seamless Integration: Compact form factor and standard mounting allow for rapid installation in existing electrical control boxes or panels

then apply an additional 1/4 turn with a wrench

Does this switch require a manual reset after the system cools down

Durable Construction: High-grade metal construction resists the thermal stress and corrosion typically found in the combustion chamber environment

Carrier HH12ZB180 Limit Switch code-compliant installThe Carrier HH12ZB180 Limit Switch is a critical OEM furnace safety control designed to protect the heat exchanger and burner assembly in Carrier, Bryant, and Payne gas furnaces. This 3 inch insert limit switch features an automatic reset mechanism and is calibrated for a fixed 180 degree Fahrenheit opening temperature with a 40 degree differential (L180 40). High limit switches are standard components in forced air systems, functioning as a normally