The 1399G8-BK is a blue mounting wing accessory for the PP45 Powerpole® connector system. This component is used to secure individual connectors into keyed assemblies, which helps prevent misconnection with similar configurations. It features precise dimensions of 16.6 mm (A), 7.9 mm (B), and 4.6 mm (C) for proper fitment. The blue color provides a means for visual identification, and the wing design facilitates stable mounting, enhancing the design flexibility and installation of Powerpole® connector systems.