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Jackson Systems

Mars 83904 120V HVAC Furnace Surge Protector

The MARS 83904 is a single-phase, 120 V surge protection device (SPD) built for furnaces, air handlers, and other HVAC electronics that can’t afford a voltage spike. Its thermally protected MOVs absorb transient energy before it reaches sensitive parts such as ECM motors, control boards, and transformers. Installation is contractor-friendly—just land the two pre-stripped leads […]

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