Surge arrester type PROXAR IIW AC is intended to indoor applications. Range of voltage is from 6kV untill 30kV. The arrester protects cable lines, motors, switchgears, transformers and capacitor banks against overvoltage. Used ZnO varistors assuere very good protection level, efficient operations and long time during service. Its small dimensions and possibility to work in every position make the arresters very universal to fit in each even small cells of switchgear. PROXAR IIW works in industry switchgears and in substations.