The Power 15/30/45 series Plug/Receptacle Housing made of polycarbonate. It is wire-to-wire connector system used for power circuit applications. These are stackable side-to-side and top-to-bottom. series 30 red and black housings joined side-to-side are commonly used as standard power connectors for handheld, mobile or base amateur radio equipment. Modular housings can also be grouped into plug frames with or without latches, which mate with receptacle housings. These are used as quick disconnects for electrical power distribution in office furniture and panels.