Description
Trane THT0660 Automatic Reset Limit Switch Overview
The Trane THT0660 is an OEM automatic (AUTO) reset limit switch engineered to protect Trane heating systems from overheating conditions. Designed as a direct replacement component, this limit switch provides reliable high-temperature cutout performance, automatically resetting once safe operating temperatures are restored — eliminating the need for manual intervention after a nuisance trip.
Key Specifications
- Brand: Trane
- Part Number: THT0660
- Switch Type: Automatic (AUTO) Reset
- Open (Trip) Temperature: 115°F
- Close (Reset) Temperature: 155°F
- Application: Furnace / Air Handler Overheat Protection
How It Works
The THT0660 limit switch monitors heat exchanger or plenum temperatures during system operation. When temperatures exceed the 115°F trip point, the switch opens the control circuit, shutting down the burner or heating element to prevent equipment damage or fire hazard. Once the system cools and temperatures drop back to the 155°F reset threshold, the switch automatically closes, restoring normal operation.
Why Choose the Trane THT0660
- Genuine Trane OEM replacement part for assured compatibility
- Automatic reset design reduces service calls and manual resets
- Protects heat exchangers, burners, and downstream components from thermal damage
- Maintains system safety and efficiency in residential and light commercial applications
- Direct drop-in replacement for simplified installation
Applications
- Trane gas furnaces and air handlers requiring limit switch replacement
- Preventive maintenance and system restoration
- OEM-spec service and warranty repairs
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