Surge Protecitve Device,Surge Protector,Surge Arrester,Lightning Protector,SPD,Lihgtning Arrester,Protector Surge 1. Working voltage: 255V/275V/320V/385V/420V/440V/520V2 ... . Max. discharge current (8/20us) Imax: 40kA/65kA4. Protection class: C,B5. Composite type: 1P, 1P+N, 1+NPE, 2P+N ... . Installation: standard rail 35mm10. Suitable for TN-S, TN-C-S, TT power supply system of AC50/60Hz.11. According ...