Westinghouse 626481R Furnace Limit Switch 0.5 Inch

Product Description

The WESTINGHOUSE 626481R is a furnace limit switch designed to monitor heat exchanger temperature and shut down the burner when unsafe temperature thresholds are reached. This switch serves as a critical safety component in forced-air gas furnace systems, preventing overheating that can damage heat exchangers or create hazardous conditions. The 626481R measures 0.5 inches in diameter, fitting standard limit switch mounting locations found in residential furnace applications. HVAC technicians install this switch as part of routine safety component replacement or when diagnosing furnace lockout conditions caused by high-limit trips.

This limit switch is intended for use in forced-air furnace installations where a 0.5-inch diameter limit switch is specified. It is appropriate for residential heating applications where the original limit switch has failed, is tripping intermittently, or shows signs of contact wear. Installers should verify the operating temperature rating and differential of the original switch before replacing to ensure the correct cutout specification is maintained.

Key Features

• 0.5-inch diameter form factor fits standard furnace limit switch mounting locations
• Functions as a high-limit safety device to prevent furnace overheating
• OEM-style replacement for WESTINGHOUSE furnace applications
• Compact disc-style construction for direct mounting to furnace plenum or heat exchanger housing

Compatibility

Designed as an OEM-style replacement limit switch for WESTINGHOUSE furnaces requiring a 0.5-inch diameter limit switch. Verify the original part number and temperature rating before installation to confirm fitment.

Installation Notes

Limit switches are installed by licensed HVAC technicians. Before servicing, disconnect electrical power to the furnace at the disconnect switch or breaker and allow the heat exchanger to cool completely. The switch mounts to the furnace plenum or bonnet and connects into the low-voltage or line-voltage control circuit depending on system design. Work should comply with local mechanical codes and the appliance manufacturer service documentation.

Technical Specifications

• Diameter: 0.5 inches
• Component Type: Limit Switch
• Application: Furnace

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 626481R