RADSOK® Power Bus Amphe-PD™ Connectors Amphenol RADSOK® Power Bus Amphe-PD™ Connector Series distributes high-current DC power in a compact design. The connectors enable wire-to-wire, wire-to-board, and bus bar terminations for 12–4AWG wire. The components employ the proprietary RADSOK® stamped hyperbolic contact technology for high amperage, low t-rise, low resistance, low mating forces, and a longer cycle life. The Amphe-PD™ connectors generate more processing power with less heat than a similar-sized connector.