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The Goodman B1370155 Auxiliary Limit Switch is a genuine OEM safety control designed for GMNTE060-3 gas furnaces and compatible Goodman/Amana models. This normally-closed thermal switch opens at approximately 120°F to shut down furnace operation if secondary airflow or heat-exchanger temperatures climb outside safe limits, protecting your equipment and your home from overheating.
This is the factory-original OEM part, calibrated to the exact trip temperature specified for your furnace. Generic equivalents may vary in open temperature and mounting geometry, causing nuisance trips or delayed shutoff. For a safety-critical component like a limit switch, OEM accuracy is strongly recommended.
Easy (1/5). Two spade terminals and one or two mounting screws. Always disconnect power at the breaker before servicing. Most DIY-capable homeowners can complete this in under 15 minutes with a nut driver.