KSK combination plug-in terminal, mounted on Ci support, blue for neutral conductor, 63A / 400V AC, degree of protection IP2X, 3x screw connection for 2.5-25 mm2 (solid/stranded) or 2.5-16 mm2 (flexible with professionally crimped ferrule) and 21x plug-in connections for 0.5-4 mm2 (solid/stranded).