Carrier HR54ZA003 Door Switch including many infrared tube heaters

including many infrared tube heaters and unit heaters

ensuring a seamless drop-in fit for legacy Wayne combustion systems

In most field applications

Always verify the 190-220F rating before installation

It serves as a drop-in replacement for legacy part numbers 101235-31

Carrier HR54ZA003 Door Switch including many infrared tube heatersThe Carrier HR54ZA003 Door Switch is a critical OEM safety interlock designed to ensure secure blower compartment closure before system engagement. As the direct cross version of B4310407, this switch is engineered for high duty cycles in residential and commercial furnace repair and air handler applications. Rated at 20A 125VAC and 10A 250VAC with 3 4 HP capacity, it provides the robust electrical characteristics necessary to handle inductive loads