Trane SWT1261 Limit Switch preventing common ignition failures such

preventing common ignition failures such as weak sparks or delayed lighting

the 620-402 features a robust 4x4 plate

This wheel is designed for counterclockwise (CCW) rotation when viewed from the hub side

the dial face is specifically calibrated for the pressure-temperature relationships of R-12

which is critical for preventing premature packing wear and ensuring accurate valve positioning in automated damper and valve assemblies

Trane SWT1261 Limit Switch preventing common ignition failures suchThe Trane SWT1261 Limit Switch is a critical safety component designed for precise thermal regulation within residential furnaces. Engineered to replace the C340056P07 and SWT01261, this high limit control monitors the internal heat exchanger temperature to prevent overheating. Operating on an automatic reset logic, this thermal limit switch is factory calibrated to open the circuit when temperatures reach 260F and automatically close (reset) at 230F.