Description
The Trane CNT4671 is a factory-replacement auto-reset high-limit switch engineered to deliver dependable overheat protection in Trane heating systems. Designed as a single-pole, single-throw (SPST) normally closed (N/C) device, it opens the circuit when the sensed temperature reaches 190°F and automatically resets once temperatures return to a safe operating range — eliminating the need for manual intervention after a nuisance trip.
Key Features
- 190°F auto-reset trip point for precise high-limit protection
- SPST normally closed (N/C) configuration
- Automatic reset — restores operation once safe temperatures are reached
- OEM Trane replacement part for accurate fit and reliable performance
- Helps prevent heat exchanger damage and equipment overheating
Application
The CNT4671 limit switch is a direct OEM replacement designed for use in Trane furnaces and air handlers. It monitors supply-air or heat exchanger temperatures and interrupts the heating circuit if temperatures exceed the 190°F threshold, protecting the heat exchanger, blower components, and surrounding structure from heat damage.
Why Choose an OEM Trane Limit Switch?
- Exact fit for Trane equipment — no modifications required
- Consistent trip and reset performance for reliable system protection
- Maintains original equipment warranty compliance
- Reduces callbacks with a part built to Trane specifications
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