Trane SWT2686 Limit Switch 321702-401 this adjustable motor pulley provides

this adjustable motor pulley provides the mechanical reliability needed for Carrier

suitable for larger light-commercial applications

including the blower pre-purge

Testing with a multimeter for continuity when cool will confirm if the sensor has failed

Operating on a 208-230V single-phase 60Hz power supply

Trane SWT2686 Limit Switch 321702-401 this adjustable motor pulley providesWhen you are looking for a reliable Trane SWT2686 Limit Switch replacement, ensuring the correct thermal calibration is critical for system safety and furnace uptime. This OEM Trane heating part is a 125 155F AUTO limit switch, specifically engineered to act as a primary safety control by monitoring discharge air or internal plenum temperatures. It features a precise 125 degree opening temperature and resets automatically at 155 degrees, preventing