Carrier HH12ZB250 Limit Switch serving as a direct thermostat

serving as a direct thermostat replacement component for faulty or drifted sensors

we recommend replacing the pad at the start of every heating season

there is no difference

Precision Engineering: Designed specifically for Siemens 3TX71 series 3PDT relays to ensure zero-slop physical fitment

8V drop-out ensures stable operation even with minor control circuit fluctuations

Carrier HH12ZB250 Limit Switch serving as a direct thermostatThe Carrier HH12ZB250 Limit Switch is a critical safety component designed for high temperature monitoring in HVAC furnace plenums and heat exchanger compartments. This OEM replacement part is engineered to open the electrical circuit when temperatures reach 250F and automatically reset once the system cools to approximately 210F. Featuring a 3 inch insertion length and a panel mount configuration, the HH12ZB250 limit switch ensures a precise fit for