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The integrated LED indicator provides immediate visual feedback on the contact status
Critical Protection: Reliable combustion safety switch prevents hazardous overheating and potential fire conditions by severing power at 250 degrees Fahrenheit
restricted gas valve
Designed for compatibility with the Lochinvar BTH series (including BTH-400 and BTH-500 models)
it is best practice to install it vertically on the service port to minimize debris accumulation at the diaphragm entry point
Nordyne 626403R Limit Switch 318172-701 The integrated LED indicator providesThe Nordyne 626403R is a high precision 140F CO Auto Limit Switch designed for critical safety monitoring in Nordyne, Intertherm, and Miller electric furnaces. As a veteran grade OEM furnace limit switch, this double pole (2 pole) component acts as a primary fail safe, monitoring discharge temperatures to prevent heat exchanger damage. This unit is the direct replacement for 626260 and also supersedes legacy part numbers 626403 and 6264030, ensuring a
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