1.1 Certificates: international certificates are under proceeding;
1.2 Number of poles: 1, 2,3, 4;
1.3 Electric ratings: 230/400V, AC50Hz;
1.4 Application: Protect electric system and on-loading electrical apparatus from thunder and instantaneous over-voltage;
1.5 Standard: IEC 61643-1, EN 61643-11
