1-350777-3 is a 2-circuit socket header connector part of the Universal MATE-N-LOK connector family, designed for wire-to-board power circuit applications. The connector features a UL94V-0 flammability-rated nylon housing with a natural color finish and pre-tin socket contact finish. It has a 0.550 inch (13.97 mm) dimension A spacing and is designed to mate with plug housing part number 350777-1, providing reliable electrical connections in compact assemblies. The connector is recognized under UL Component Program File No. E28476 and certified by Canadian Standards Association File No. LR7189, making it suitable for home appliances and industrial power distribution applications where safety and durability are essential.