Rheem-Ruud 470004 Limit Switch SPST Auto Reset 160°F Open 120°F Close

The Rheem-Ruud 470004 is a genuine OEM limit switch designed to protect heating systems from overheating by controlling blower operation. This automatic reset safety control opens at 160°F and closes at 120°F, providing reliable thermal protection for residential and light commercial HVAC applications.

Key Features:

• Single Pole Single Throw (SPST) normally closed configuration
• Automatic reset operation for convenient hands-free recovery
• Opens at 160°F to shut down heating cycle when temperature exceeds safe limits
• Closes at 120°F to resume normal operation after cooling
• Rated for 230V applications with 25A maximum current capacity
• Genuine Rheem-Ruud OEM replacement part for guaranteed compatibility

This limit switch is a critical safety component that monitors air temperature in the heat exchanger or plenum area. When temperature rises beyond the safe operating range, the switch opens to prevent overheating damage. The automatic reset feature eliminates the need for manual intervention once temperatures return to normal levels.