Plug-in busbar for PLS.CLS.PKN.PFIM, PFHM, (with auxiliary contacts), any switchgear combination, with and without auxiliary contacts, is possible, only a few components, 2 angle bracket types per busbar cross-sectional area for three-phase busbars, shared shroud section with end caps for ZV-SS and ZV-SS-80A, short-circuit and insulation resistance tested in accordance with IEC/EN 60439-1