varistor

Forum discussion tagged with varistor.
  1. C

    Question Doubt surge protector and varistor

    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
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