Yuanky cov khoom siv hluav taws xob qis qis muab kev tiv thaiv rau cov kab hluav taws xob qis, cov khoom siv hauv tsev, cov khoom siv faib khoom thiab lwm yam kab ke. Lub varistor hlau-oxide tsis muaj qhov sib txawv uas suav nrog hauv lub cuab yeej ntes hluav taws xob txhim khu kev qha tsim cov kev txwv qis rau cov hluav taws xob tshwm sim los ntawm cov hluav taws xob overvoltages thiab cov hloov pauv transients, yog li tiv thaiv kev rwb thaiv tsev ntawm cov tes hauj lwm thiab cov khoom siv ntawm cov neeg siv khoom. Lub varistor muaj lub sijhawm teb luv luv heev (feem ntau<100 ns) thiab tuaj yeem tswj tau cov hluav taws xob siab txog li 100 kA, 4/10 μs. Lub zog tso tawm tam sim no ntawm lub cuab yeej ntes yog 10 kA. Lub varistor hlau-oxide tau kaw rau hauv lub tsev polymer ruaj khov, tiv taus huab cua. Muaj ntau qhov kev sim tau lees paub qhov ruaj khov ntawm lub tsev, txawm tias thaum raug rau qhov kub thiab txias hloov pauv thiab muaj kuab paug heev. Cov cuab yeej ntes hluav taws xob LV ua raws li cov kev cai Class II raws li tau txhais los ntawm IEC 61643-1.