Description
The Rheem-Ruud 47-102473-02 is an OEM general purpose limit switch engineered for precise temperature control and reliable overheat protection in Rheem and Ruud heating systems. With fixed open and close setpoints, this board-mounted switch provides consistent, repeatable performance to safeguard heat exchangers and other critical furnace components.
Key Specifications
- Fixed Open Temperature: 170°F
- Fixed Close Temperature: 150°F
- Switch Type: SPST (Single-Pole, Single-Throw) Normally Closed
- Reset Type: Auto Reset
- Insertion Length: 3 inches
- Mounting Style: Board Mounted
Product Highlights
- OEM Rheem-Ruud replacement part for direct-fit installation
- Normally closed (NC) design opens circuit on high-temperature fault, cutting off heat source to prevent damage
- Auto reset function automatically restores operation once temperatures return to safe levels
- 3″ insertion length ensures accurate sensing within the airstream or heat exchanger cavity
- Board-mounted configuration simplifies installation and ensures secure, vibration-resistant contact
- Fixed setpoints eliminate the need for field calibration, reducing installation time and error
Application
Designed as a direct OEM replacement for Rheem and Ruud residential and light commercial furnaces, this limit switch monitors supply air or heat exchanger temperatures to protect against overheating conditions. When temperatures exceed 170°F, the normally closed switch opens to interrupt the burner or blower circuit. Once the temperature drops back to 150°F, the auto reset feature closes the switch and restores normal operation — no manual intervention required.
Why Choose OEM?
- Guaranteed fit and function for compatible Rheem and Ruud equipment
- Maintains original equipment performance and warranty compliance
- Eliminates compatibility guesswork associated with aftermarket alternatives
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