Westinghouse 626600 Furnace Main Limit Switch 0.5 in

Product Description

The WESTINGHOUSE 626600 is a main limit switch designed for use in forced-air furnace systems. Limit switches are safety-critical components that monitor heat exchanger temperature and interrupt the burner circuit when the system overheats, protecting both the equipment and the structure from heat damage. The 626600 features a 0.5 inch diameter form factor, which is a common size for residential and light commercial furnace applications. Licensed HVAC technicians typically replace this component during routine safety inspections or when diagnosing intermittent shutdown faults caused by a failed or out-of-calibration limit switch.

This limit switch is intended for installation in furnaces where a 0.5 inch diameter limit switch is specified. It is suited for residential gas and oil-fired forced-air furnace applications where the existing limit switch requires replacement due to age, failure, or nuisance tripping. Installers should verify the existing switch mounting configuration, temperature rating, and terminal type against the replacement unit before proceeding.

Key Features

• 0.5 inch diameter body for standard furnace limit switch mounting locations
• Functions as a safety limit to interrupt burner operation on high-temperature conditions
• OEM-style replacement form factor for residential and light commercial furnaces
• Designed for use in forced-air furnace systems

Compatibility

Designed as an OEM-style replacement limit switch for furnaces specifying a 0.5 inch diameter main limit switch. Verify temperature rating and terminal configuration against the existing unit before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable local codes and the furnace manufacturer's service documentation. Disconnect power to the furnace and shut off the gas supply before replacing the limit switch. Confirm the replacement switch matches the original in temperature rating, body diameter, and terminal configuration. Do not bypass or jumper the limit switch circuit during or after installation.

Technical Specifications

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

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 626600