Phoenix Contact 1778887 The PCB connector has a nominal cross-sectional area of 0.5 mm2, a black color, and is rated for a maximum current of 6 A with an operating voltage of up to 160 V. The contact surface material is Sn and it uses a socket connection type, featuring seven potentials, one row, seven positions, and seven connections. This connector falls within the PTSM 0,5/..-P product range and has a pitch of 2.5 mm, utilizing a push-in spring connection method with a conductor-to-PCB connection direction at 0° degrees.