5501-1503 Burton Compatible 55 series Cable Plug Cable Plug 15 shell 3 pin The Burton 5500 series connector is a high-quality, rugged and reliable connector system designed for use in harsh environments. This connector series is commonly used in military, aerospace and industrial applications where reliable electrical connections are vital.CCP Cable Connector Plug (5501) The standard plug for most applications. Like all of the plugs, it mates to any of the receptacles. This plug is molded to cable at the Cooper Interconnect factory.