The 1-770873-1 is a 3-circuit, in-line style vertical pin header for wire-to-board applications within the Mini-Universal MATE-N-LOK connector system. This header is designed without drain holes and features a duplex pin finish. It is part of a connector family rated for 600 VAC or VDC and accepts a wire size range of 30-16 AWG. With a centerline spacing of .163 inches (4.14 mm), these connectors offer a compact and durable solution for various commercial and industrial equipment, featuring a positive locking mechanism to prevent accidental disengagement.