nogueiraat Posted October 16, 2023 Report Share Posted October 16, 2023 I have a surge protector 220v, it uses 3 x 20mm varistors When a varistor bursts or explodes or at the end of its useful life, the protection is lost but the surge protector sockets continue to operate without protection? 3 varistors F-N, F-T, N-T Quote Link to comment Share on other sites More sharing options...
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