For protecting consumer systems against transient overvoltages caused by indirect lightning strikes and switching operations, test class II according to IEC 61643-1+A1, SPD-type T2 according to EN 61643-11, SPC-S-HK auxiliary contact for remote signaling can be added, can be bussed with all Xtra Combinations switchgear caused by indirect lightning strikes and switching operations, test class II according to IEC 61643-1+A1, SPD-type T2 according to EN 61643-11, SPC-S-HK auxiliary contact for remote signaling can be added, can be bussed with all Xtra Combinations switchgear