Description
The Rheem-Ruud 47-23610-21 is an OEM general purpose temperature limit switch engineered for precise over-temperature protection in Rheem and Ruud heating systems. Featuring fixed operating temperatures and an automatic reset design, this limit switch reliably safeguards heat exchangers and furnace components from damaging temperature excursions — restoring normal operation automatically once safe temperatures are re-established.
Key Features
- Fixed close temperature: 155°F — switch opens the circuit at this threshold to interrupt operation
- Fixed open temperature: 175°F — circuit remains open until temperature drops back to the reset point
- SPST (Single-Pole, Single-Throw) Normally Closed switch configuration
- Auto reset operation — automatically restores circuit continuity when temperature falls within safe range
- Red/White color-coded leads for straightforward wiring identification and installation
- General purpose limit switch design for broad compatibility within Rheem and Ruud equipment
- Direct OEM replacement part — ensures proper fit and performance in compatible systems
Product Specifications
- SKU / Part Number: 47-23610-21
- Brand: Rheem-Ruud
- Switch Type: SPST Normally Closed (NC)
- Fixed Close Temperature: 155°F
- Fixed Open Temperature: 175°F
- Reset Type: Auto Reset
- Lead Color Coding: Red / White
- Application: General Purpose Limit Switch
Application & Compatibility
Designed as a direct OEM replacement for select Rheem and Ruud furnaces and air handlers, the 47-23610-21 limit switch monitors supply air or heat exchanger temperatures to prevent overheating conditions. When airflow is restricted or a fault condition causes temperatures to rise, the normally closed contacts open the control circuit — shutting down the burner or heating element to protect the equipment and occupants. Once temperatures return to the safe operating range, the auto reset function closes the contacts and allows normal operation to resume without manual intervention.
Always verify compatibility with your specific Rheem or Ruud model before installation. Consult the equipment’s wiring diagram and follow all applicable safety codes during replacement.
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