770873-2 is a 3-circuit vertical pin header connector designed for wire-to-wire applications in high-density configurations. The connector features an in-line style with a dimension A of 0.550 inches (13.97 mm) and is manufactured from UL94V-0 nylon material. It is available with tin or duplex plating options and mates with Mini-Universal MATE-N-LOK plug housings using socket contacts. The connector supports a voltage rating of 250 V AC or DC with a dielectric withstanding voltage of 1.0 kVAC and an insulation resistance of 1000 megohms minimum. This connector is commonly used in industrial control systems, telecommunications equipment, and consumer electronics where reliable multi-circuit connections are required.