Nordyne 626481R Limit Switch

The Nordyne 626481R Limit Switch is a critical OEM safety component designed for high-performance temperature regulation in residential and light commercial HVAC systems. This L135-40 limit switch is engineered to open the electrical circuit at a fixed cutout temperature of 135°F, effectively interrupting the burner or blower circuit to prevent thermal override and equipment damage. As an auto-reset limit switch, it automatically re-closes the circuit once temperatures drop to 95°F, ensuring consistent cycling and operational continuity without manual intervention.

Built for durability and precise calibration, the 626481R furnace limit switch is a direct OEM replacement part for various Nordyne, Intertherm, and Miller furnaces, including popular G8SD and MGC3SD series units. This 36TX11 style switch features a SPST configuration and is optimized for heat exchanger and plenum locations where airflow monitoring is vital. For technicians replacing Nordyne furnace parts, this 135-degree high-limit control ensures the system operates within manufacturer-specified safety parameters, maintaining the integrity of the heat exchanger and overall furnace efficiency.

• Precise Safety Calibration: Fixed 135°F cutout is factory-set to prevent overheating and potential heat exchanger stress.
• Automatic Reset Logic: Resets at 95°F to restore system operation promptly once safe internal temperatures are reached.
• OEM Compatibility: Authentic replacement for part numbers 626481 and 626481R, providing exact fitment for Nordyne and Nortek families.
• Reliable Switching: Utilizes high-grade 36TX11 thermal disc technology for thousands of reliable cycles in demanding heating environments.

Is the Nordyne 626481R an auto-reset or manual-reset switch?
This specific model is an auto-reset switch. It opens at 135°F and automatically closes at 95°F to resume normal operation without requiring a technician to push a reset button.

What causes this limit switch to trip repeatedly?
Repeated tripping is usually indicative of restricted airflow. Check for clogged air filters, closed registers, a failing blower motor, or obstructions within the secondary heat exchanger.

Can I use this switch in a mobile home furnace?
Yes, the 626481R is commonly found in Nordyne/Intertherm/Miller manufactured housing furnaces. Always verify the L135-40 specification on your existing switch to ensure a direct match.

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.