AccessoriesArrester for d.c. Voltage SystemsMedium-Voltage Surge ArresterPolymer HousingPorcelain HousingTransmission line MenuAccessoriesArrester for d.c. Voltage SystemsMedium-Voltage Surge ArresterPolymer HousingPorcelain HousingTransmission line Nominal Discharge Current 5 kANominal Discharge Current 10 kA Nominal Discharge Current 5 kAProtection of transformers, switchgears and transmission lines against atmospheric and switching overvoltages.iec_class_2_up_to_145_kv-unlockedNominal Discharge Current 10 kAProtection of transformers, switchgears and transmission lines against atmospheric and switching nominal_discharge_current_10_kaovervoltages.