Z7.280.2427.0 is a 4-pole insulated cross connector (IVB WKF 2.5-4) designed for use with Wieland WKF 2.5/35 feed-through terminal blocks. This connector facilitates interconnection between multiple terminal block modules, enabling efficient signal and power distribution in compact DIN rail installations. The cross connector is rated for 0.13–2.5 mm² fine stranded or 0.13–4 mm² solid wire, with a voltage rating of 400 V/6 kV/3 and a current capacity of 17.5 A. It features a 5 mm pitch spacing and is supplied in standard packs of 10 units, making it ideal for modular electrical panel designs where space-saving and reliable connections are critical.