When the PROTECTING light is off, the surge protector has consumed the maximum joule capacity due to surges and spikes or an overvoltage and is not protecting your connected equipment against these anymore. Surge protectors equipped with the Power Blocker technology have disconnected the power connection and need to be replaced. If the connected equipment gets damaged due to a surge or over voltage when the PROTECTING light is out, you cannot claim under the Connected Equipment Warranty (CEW).