The two contact system provides a high spring force (upper contact) to capture and retain the wires after insertion as well as a large contact surface (lower) for 6A per contact current rating. The two contact system also provides two solder attachment points in line with each wire for maximum PCB attachment strength. The PCB tails are contained within the outer body dimensions which minimizes overall length and width dimensions. The 2.5mm pitch supports wire diameters up to 18AWG.