Trane THT0660 Limit Switch 30067439-890 two inlets combine into one

two inlets combine into one outlet

Optimized Performance: maintains exact manifold pressure specifications to protect the heat exchanger and maximize fuel economy

Since this is a normally closed (NC) switch

this 120V ignition transformer delivers a consistent 10

High-Quality Construction: Manufactured to rigorous factory standards for dependable operation in demanding thermal environments

Trane THT0660 Limit Switch 30067439-890 two inlets combine into oneAs a field tested professional, you know that a failing limit switch is often the culprit behind frustrating short cycling or total system lockouts. The Trane THT0660 is a genuine OEM limit switch designed specifically for precision thermal monitoring in Trane and American Standard HVAC equipment. Utilizing bi metal technology, this auto reset switch features a 155F opening threshold to prevent heat exchanger damage and a 115F closing point for safe