Wago common potential matrix patchboard for 19in rack slim numeric 726 series wago 726 621 wago 726 621 ground conductor common potential matrix patchboard slimline version marked 1 24 for 19in racks numbering of modules is arranged vertically colour of modules green yellow with 1 input module incl end plate colour dark grey 10pcs wago 726 621 gnd common potential patchboard 1 24 slim 19in rack dk grey 10pk