Nordyne 626540R Limit Switch 318518-761 or visible moisture in the

or visible moisture in the sight glass

which prevents oxidation and secures high conductivity during low-current logic signals or full-load amperage draws

Enhanced Stability: Provides a flush-mount finish that prevents device shifting or loosening over time

maintaining proper airflow is essential

responding to 2-10VDC speed signals for dynamic airflow management

Nordyne 626540R Limit Switch 318518-761 or visible moisture in theThe Nordyne 626540R Limit Switch is a critical OEM replacement part engineered for high limit protection in Nordyne, Nortek, Intertherm, and Miller furnace systems. This heavy duty 150 200F auto reset thermostat serves as a primary safety mechanism, monitoring plenum temperatures to prevent heat exchanger damage or hazardous overheating conditions. Featuring a standard 3 4 inch outer diameter and a surface mount configuration, the Nortek 626540R