York S1-794-5-328-1/A Limit Switch Overview
The York S1-794-5-328-1/A is an OEM limit switch engineered to protect heating equipment from unsafe operating temperatures. Designed as a direct replacement for compatible York systems, this limit switch opens the circuit at 140°F to interrupt operation when temperatures exceed safe thresholds, and automatically resets by closing the circuit at 110°F once conditions return to normal. This automatic reset functionality helps restore normal system operation without manual intervention, reducing service call frequency and system downtime.
Key Features
- Opens (trips) at 140°F to protect against overheating
- Closes (resets) at 110°F for automatic circuit restoration
- OEM York replacement part — ensures proper fit and function
- Designed for use in York furnaces and compatible heating systems
- Provides reliable high-limit protection for safe system operation
Application
This limit switch is a critical safety component in forced-air furnace systems. It monitors supply air or heat exchanger temperatures and interrupts the burner circuit if temperatures rise beyond the 140°F set point, preventing equipment damage and potential fire hazards. The 110°F close point ensures the system does not restart until it has adequately cooled down.
Specifications
- Part Number: S1-794-5-328-1/A
- Brand: York
- Switch Type: Limit Switch (Automatic Reset)
- Open Temperature: 140°F
- Close Temperature: 110°F
