Rheem-Ruud 47-22860-02 Auto Reset Temperature Limit Switch
The Rheem-Ruud 47-22860-02 is a precision-engineered auto reset temperature limit switch designed for reliable overheat protection in Rheem and Ruud heating systems. Color-coded blue for quick field identification, this switch features heat-assisted operation and a single-pole, single-throw normally closed (SPST NC) configuration that automatically resets once temperatures return to a safe operating range — eliminating the need for manual intervention after a nuisance trip.
Key Specifications
- Fixed Close (Trip) Temperature: 100°F
- Fixed Open (Reset) Temperature: 110°F
- Switch Type: SPST (Single-Pole, Single-Throw), Normally Closed
- Heat Assist: 1.5 Watt
- Reset Type: Auto Reset
- Color Code: Blue
- OEM Part Number: 47-22860-02
- Compatible Brands: Rheem, Ruud
Product Features & Benefits
- Auto Reset Convenience: Automatically restores circuit continuity once the sensed temperature drops below the fixed open threshold, reducing service calls and downtime
- Heat-Assisted Operation: 1.5-watt internal heater ensures accurate, consistent switching response and helps prevent nuisance trips caused by localized cold spots
- Normally Closed Design: Maintains circuit continuity during normal operation; opens the circuit upon reaching the 100°F trip point to protect equipment from overheating
- Blue Color Coding: Industry-standard color identification allows technicians to quickly verify the correct limit switch is installed during service and maintenance
- OEM-Quality Replacement: Engineered to Rheem-Ruud factory specifications for direct drop-in replacement, ensuring proper fit and reliable performance
- Durable Construction: Built to withstand the demands of residential and light commercial HVAC applications
Application
This limit switch is a direct OEM replacement for Rheem and Ruud furnaces and air handlers. It serves as a critical safety control, monitoring supply air or heat exchanger temperatures and shutting down the heating circuit if temperatures exceed the 100°F trip point. The auto reset function restores normal operation once conditions are safe, making it ideal for installations where manual reset access is limited.
