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.
By clicking on the link, you will be leaving the official Royal Philips Healthcare ("Philips") website. Any links to third-party websites that may appear on this site are provided only for your convenience and in no way represent any affiliation or endorsement of the information provided on those linked websites. Philips makes no representations or warranties of any kind with regard to any third-party websites or the information contained therein.