Trane SWT3968 Rollout Switch 322055-301 The Lennox 31K74 Blower Shaft

The Lennox 31K74 Blower Shaft is a critical replacement component engineered for heavy-duty rotation in residential and commercial air handlers

ideal for high-ambient temperature installations

For technicians servicing Monterey or Forsaire series units

double-throw 10-amp switch allows for normally open or normally closed wiring configurations

it ensures proper stroking and prevents pilot air or process gas leaks through the vent hole

Trane SWT3968 Rollout Switch 322055-301 The Lennox 31K74 Blower ShaftThe Trane SWT3968 Rollout Switch is a critical safety component engineered for gas fired furnaces and HVAC systems. As a genuine OEM replacement part, this manual reset flame rollout switch is calibrated to open the electrical circuit when internal temperatures at the burner box exceed the fixed threshold of 190F (L190F). Designed with an enclosed stainless steel disc and high grade unplated brass terminals, this SPST (Single Pole Single Throw)