Trane SWT1280 Limit Switch The 071-03406-002 is primarily used

The 071-03406-002 is primarily used in the Sensus Model 496 domestic service regulator and is also compatible with the Sensus 043B series

maintaining smooth operation in standard indoor mechanical environments

or an audible humming sound from the outdoor unit without ignition

Engineered from high-grade metal to withstand high-temperature furnace environments

Trane SWT1280 Limit Switch The 071-03406-002 is primarily usedThe Trane SWT1280 Limit Switch is a high reliability OEM thermal protection component specifically engineered for HVAC furnace safety and consistent air handler performance. This 3" insert limit switch serves as a critical fail safe, monitoring supply plenum temperatures to prevent equipment damage. It is factory calibrated with a 155F opening point and an automatic reset that closes the circuit at 125F. For field technicians, the SWT1280 is identical