The Trane 314688 Limit Switch/Thermostat (also listed as SWT03009, X13420134050) is an auto-reset temperature control designed to regulate temperature within HVAC systems. Featuring an L140-30F rating, this limit switch activates at 140F and resets automatically at 110F, offering dependable protection against overheating in heating and cooling units. Key Features Auto-reset functionality ensures system recovers automatically after temperature drop Accurate control with L140-30F temperature range Compact and durable construction for long-term performance Genuine Trane OEM replacement part Designed for precise temperature protection Specifications Part Numbers: 314688, SWT03009, X13420134050 Type: Limit Switch / Thermostat Reset Type: Auto Reset Temperature Rating: L140-30F Opens at 140F, closes at 110F Function: Over-temperature protection in HVAC systems Compatible Models VCEF04000A0DD04A00000L0WWD010110 VCEF04000D0DD04B00000L5WWF010110 VCEF04000D0DD05F00000L6WWG010220 VCEF04000G0AT02D00000L4WWD01011000 (Fits a wide range of models ? list shortened to 4 entries for brevity) Why Choose This Item Choose the Trane 314688 Auto Reset Limit Switch for reliable thermal control and safety. Its automatic reset function eliminates manual intervention, while the OEM-grade quality ensures perfect compatibility and consistent performance in Trane systems. A critical safeguard for maintaining system integrity and preventing component damage from overheating.