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Limit 1/2"D 1 Single Pole Open-on-Rise 150° Manual Reset Fixed Programming

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A furnace limit switch is a component of a forced-air furnace that is responsible for turning on the furnace blower once the desired heat has been reached. Limit Switches regulate when your home is heated by gauging the temperature of the surrounding air. If the temperature inside the furnace gets too hot, the limit will open up, resulting in the burners shutting off. This limit opens at 150°. It uses a manual reset along with fixed Programming.