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What is the Power Blocker?

Metal Oxide Varistors (MOV) may degrade over time and after use, especially if they are absorbing energy which is close to, or exceeds, their ratings. Even when the MOVs are no longer protecting, most surge protectors continue to provide AC power. This may potentially result in damage to your connected equipment. Power Blocker surge protectors shut themselves down once they have exceeded capacity, so equipment is not exposed to further surges.

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