Masu kamun walƙiya muhimmin mai kariya ne a cikin tsarin wutar lantarki, wanda ake amfani da shi don ɓata manyan na'urorin lantarki akan -arfin .arfin Zinc ƙarfin lantarki, halin yanzu kawai yana da matakin microamps; lokacin da yawan ƙarfin lantarki, halin yanzu wanda ta hanyar zinc oxide varistors ke gudu, zai iya saurin sakin ikon ƙarfin lantarki, don haka iyakance ƙarfin ƙarfin-ƙarfi, a halin yanzu, zinc oxide varistor suma suna da waɗannan fasalulluka na babban ƙarfin gudana, saurin saurin amsawa, saurin amsa sauri, kyakkyawan aikin kariya da sauransu. MOAS na wannan an tsara shi don fitarwa perfanshin kamun waɗanda aka kama ya cika ƙa'idodin IEC60099-4 na yau da kullun.