Description
The Rheem-Ruud 47-25349-04 is a board mounted general purpose limit switch engineered for precise temperature control and reliable overheat protection in Rheem and Ruud heating equipment. With fixed open and close temperature thresholds, this switch automatically interrupts the circuit when unsafe temperatures are detected and resets once conditions return to normal — keeping your system running safely and efficiently.
Key Specifications
- Fixed Open Temperature: 180°F
- Fixed Close Temperature: 160°F
- Switch Type: SPST (Single Pole, Single Throw) Normally Closed
- Reset Type: Auto Reset
- Insertion Length: 3 inches
- Mounting Style: Board Mounted
- Color Code: Black/Black
Product Overview
Designed as a direct OEM replacement for compatible Rheem and Ruud furnaces and air handlers, the 47-25349-04 limit switch monitors supply air or heat exchanger temperatures to prevent overheating. The normally closed SPST configuration ensures the circuit remains complete during normal operation and opens the circuit when the 180°F threshold is reached. The auto reset function restores normal operation once temperatures drop back to the 160°F close point, eliminating the need for manual intervention.
Features & Benefits
- OEM-grade replacement for Rheem and Ruud heating systems
- Auto reset eliminates manual reset requirements after a temperature trip event
- Fixed open/close temperatures provide consistent, repeatable protection
- 3″ insertion length for proper sensing depth in the airstream or heat exchanger
- Board mounted design for secure, vibration-resistant installation
- Black/Black color coding for easy identification during installation and service
- SPST normally closed design maintains circuit integrity during normal operation
Application
This limit switch is intended for use in Rheem and Ruud residential and light commercial gas furnaces and heating systems where OEM-specified temperature control components are required. Always verify compatibility with your specific unit model before installation.







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