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 61643-11, EN 61643-11