Description
York S1-025-22273-002 Auto Reset Limit Switch Overview
The York S1-025-22273-002 is an OEM auto-reset limit switch engineered to protect furnaces and heating systems from overheating conditions. Designed to open the circuit at 140°F and automatically reset at 100°F, this limit switch provides reliable, hands-free thermal protection — restoring normal furnace operation once safe temperatures are reached without requiring manual intervention.
Key Features
- Auto-reset operation — automatically resets at 100°F after tripping at 140°F
- Opens at 140°F to protect against overheating
- Resets at 100°F for automatic restoration of normal operation
- OEM York replacement part — ensures proper fit and function
- Designed for use in York furnaces and compatible heating equipment
- Provides dependable high-limit protection for system safety
Product Specifications
- Brand: York
- SKU / Part Number: S1-025-22273-002
- Switch Type: Auto Reset Limit Switch
- Trip Temperature: 140°F (opens)
- Reset Temperature: 100°F (closes)
Application
This limit switch is a direct OEM replacement for York heating systems. It is installed in the heat exchanger or plenum area to monitor supply air or heat exchanger temperatures. When temperatures exceed the 140°F setpoint, the switch opens to shut down the burner, preventing damage to the heat exchanger and ensuring occupant safety. The auto-reset feature allows the switch to close again once temperatures fall back to 100°F, resuming normal furnace operation without requiring a service call for manual reset.
