It should be used to signal a contactor or gas valve rather than carrying the full amp load of heating elements

this is an OEM part specifically optimized for Carrier

Diagnostic Reliability: Prevents nuisance tripping and intermittent furnace lockout issues caused by inferior aftermarket sensors

preventing premature failure of the new compressor

providing consistent static pressure performance that off-the-shelf induction motors simply can’t match

Trane SWT3927 Limit Switch 322838-752 It should be used toThe Trane SWT3927 Limit Switch is a critical safety component designed for precise thermal regulation in residential and commercial forced air systems. This L155 60F limit switch features a cutout temperature of 155F and a 60F differential, ensuring the heat exchanger does not exceed safe operating parameters. When the plenum temperature hits the high limit setpoint, this genuine OEM Trane part interrupts the burner circuit, preventing equipment