home surge protection/SPDsurge ,Surge Protecitve Device,Surge Protector,Surge Arrester,Surge Arrestor,Lightning Protector 1. Working voltage: 255V/275V/320V/385V/420V/440V/ ... : 30kA3. Max. discharge current (8/20us) Imax: 60kA4. Protection class: B5. Composite type: 1P, 1P+N, 1+NPE, 2P+N ... TN-C-S, TT power supply system of AC50/60Hz.10. According to IEC61643-1, GB18802.111. CE Mark Surge Arrester spd