Nordyne 626494R Limit Switch

The Nordyne 626494R is a critical safety component engineered for precise thermal management in residential and light commercial forced-air systems. This automatic reset limit switch serves as the primary failsafe, monitoring heat exchanger temperatures to prevent thermal runaway. Rated as a L280-40F furnace limit switch, it is calibrated to open the electrical circuit at 280?F and automatically re-close when temperatures drop back by 40?F to 240?F. As a robust high limit switch replacement, this unit ensures the blower and burner cycles maintain safe equilibrium. It is the direct OEM-specified replacement for 36T01B5-44916, offering a drop-in solution for technicians servicing Miller, Intertherm, and Nordyne-branded equipment. Using a standard flange mount and 1/4-inch quick-connect terminals, it integrates seamlessly into existing wiring harnesses to protect critical furnace components from heat-induced failure.

Key Benefits:

• Precise Thermal Protection: Features a 280?F trip point for reliable equipment safeguarding.
• Automatic Reset Functionality: Restores system continuity at 240?F without requiring manual technician intervention.
• Interchangeable Design: Serves as the direct technical successor to Nordyne 626494 and 36T01B5 series controls.
• Heavy-Duty Construction: Built to withstand high-cycling environments within the heat exchanger plenum.
• Application Specific: Optimized for use in Nordyne furnace parts kits to ensure factory-spec performance.

Common Questions:

What are the cut-in and cut-out temperatures for this switch?
The switch is designed to break the circuit at a 280?F limit switch temperature rating and reset once the air temperature cools to 240?F.

Can the Nordyne 626494R replace a manual reset switch?
No. This is an automatic reset model. Always match the reset type and temperature specifications of the original component used by the manufacturer.

How do I diagnose a faulty high limit switch?
Technicians should check for continuity across the terminals when the system is cool; an open circuit during a call for heat usually indicates a tripped or failed switch due to airflow restrictions.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.