The Trane SWT1275 is a genuine OEM thermal limit switch used in furnace and HVAC systems to protect against overheating. It opens at approximately 135 °F and resets at 105 °F, helping safeguard heat exchangers and internal components during high-temp conditions. This switch is designed for direct replacement in Trane systems, ensuring proper fit and reliable operation. Its compact design and quick-connect terminals make it easy to service and install. OEM quality supports consistent performance and durability compared with generic alternatives.
Key Features
- OEM Trane thermal limit switch — correct fit and reliability in Trane furnaces
- Opens at ~135 °F and closes at ~105 °F to protect against overheating
- 3-inch insertion length for secure positioning in control circuits
- SPST normally closed contact provides straightforward on/off control
- Compact design with quick-connect terminals for easy install
- Helps prevent heat-related faults and system lockouts
- Ideal OEM replacement for legacy SWT01275 parts
