Zinc oxide Surge Arresters bụ ihe mgbochi kachasị elu megide oke voltaji n'ụwa. Ebe ọ bụ na ndị na-emegide ZOSA bụ ihe nkiri zinc oxide mejupụtara. Zinc oxide na-arị elunjides nwere àgwà voltaji-ampere dị mma dị ka e jiri ya tụnyere ndị na-ejide SiC, ọ na-abawanye voltaji na nke ugbu a na-arịwanye elu nke ukwuu ma mee ka mgbanwe dị mkpa nke àgwà ZOSA pụta ìhè naanị mgbe ZOSA na-arụ ọrụ n'okpuru voltaji nkịtị, ma ọnụ ọgụgụ nke ugbu a ga-abụ ọtụtụ puku am-peres mgbe ZOSA na-eguzogide n'elu-voltaji, n'ihi na nke ZOSA nwere ezi! njirimara na-abụghị linear. N'oge ahụ ọ bụ n'ihe banyere site na steeti enyemaka n'elu-voltaji ike, nke mere na-amachi n'ụzọ dị irè mmebi nke ngwá ọrụ nke nnyefe na mgbanwe.