Trane SWT1278 Limit Switch Overview
The Trane SWT1278 is a precision-engineered limit switch designed to protect HVAC heating systems from overheating conditions. Acting as a critical safety device, this limit switch automatically opens the circuit at 150°F to shut down the burner when temperatures exceed safe operating levels, then resets by closing the circuit at 120°F once conditions return to normal. It is a direct OEM replacement part built to Trane’s exacting quality standards, ensuring dependable performance and long service life.
Key Features
- Opens (trips) at 150°F to interrupt the burner circuit during overheat conditions
- Closes (resets) at 120°F to restore normal furnace operation
- OEM Trane replacement part for precise fit and reliable performance
- Protects heat exchangers and system components from thermal damage
- Designed for use in Trane furnaces and compatible heating equipment
- Durable construction for long-lasting, dependable service
Application
The SWT1278 limit switch is used in Trane forced-air furnaces and heating systems as a primary safety control. It monitors supply air or heat exchanger temperatures and interrupts burner operation if unsafe temperature levels are detected, preventing equipment damage and potential fire hazards. Always verify compatibility with your specific Trane model before installation.
Specifications
- Brand: Trane
- Part Number: SWT1278
- Type: Limit Switch
- Open (Trip) Temperature: 150°F
- Close (Reset) Temperature: 120°F
