home surge protection/SPDsurge ,Surge Protecitve Device,Surge Protector,Surge Arrester,Surge Arrestor,Lightning Protector 1. Working voltage: 255V/275V/320V ... /385V/420V/440V/520V2. Normal discharge current (8/ ... . According to IEC61643-1, GB18802.111. CE Mark Surge Arrester spd