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 (8/20us) In: 30kA3. Max. discharge current (8/20us) Imax: 60kA4. Protection class: B5. Composite type: 1P, 1P+N, 1+NPE, 2P+N, 3P+N, 3P+NPE6. Voltage protection level (Up): < 2.0kV/2.2kV7. ...