Trane SWT1274 Limit Switch 321894-709 Engineered to withstand high-temperature flue

Engineered to withstand high-temperature flue gases

effectively removing itself from the circuit once the compressor has reached its running RPM

Rugged Build: Engineered to withstand the frequent cycling of auxiliary heat stages without contact pitting

checking the model and serial number of the HVAC unit is the most reliable way to confirm fitment

Trane SWT1274 Limit Switch 321894-709 Engineered to withstand high-temperature flueThe Trane SWT1274 Limit Switch (also listed as SWT01274) is a high precision HVAC safety control designed for furnace high limit protection. As a veteran grade OEM furnace part, this thermal limit switch is engineered to monitor the supply plenum temperature, providing a critical fail safe against heat exchanger damage. It operates with a fixed factory setting that opens at 125F to break the heating circuit and closes at 95F to allow for an automatic