Description
The Trane SWT1258 Auto Limit Switch is a genuine OEM safety device designed to protect your furnace or HVAC system by monitoring internal temperatures and preventing overheating. It’s a thermal limit switch with a 3-inch insert, opening at around 170 °F and closing again at roughly 140 °F to safeguard key components like heat exchangers and blower assemblies.
Key Features
- OEM-Grade Safety Control: Built to Trane specifications for reliable performance and proper fit in compatible furnaces and air handlers.
- Accurate Thermal Protection: Opens at ~170 °F to shut down equipment when temperatures rise too high, then resets at ~140 °F — helping prevent overheating and damage.
- Automatic Reset Design: Restores normal operation without manual intervention when temperatures return to safe levels.
- 3″ Insert Size: Standard insert size for easy installation in many Trane and American Standard models.
- Critical Safety Component: Protects heat exchangers and system electronics by limiting runs at unsafe temperature levels.







Reviews
There are no reviews yet.