Trane THT2436 Limit Switch while the common lead is

while the common lead is white with a yellow stripe

they serve as a direct Littelfuse 2AG-229-002 cross-reference

the 10P28 offers broad furnace thermocouple compatibility across Lennox G20

This 120V blocked vent switch is a specialized thermal safety control engineered to monitor flue gas temperatures and detect dangerous obstructions in the vent system

Trane THT2436 Limit Switch while the common lead isThe Trane THT2436 is a mission critical HVAC high limit switch designed for furnace temperature regulation and system safety. This OEM Trane replacement part serves as the direct successor for the legacy 1NT21L 2163 model. Engineered as an automatic reset limit switch with an SPST (single pole, single throw) configuration, the device is calibrated to open the circuit at 170F and automatically re close once temperatures drop back to 140F. This precise