1-641737-1 is a 4-circuit pin header connector designed for wire-to-board power circuit applications in home appliances, particularly gas appliances. It features a 5.0 mm contact centerline spacing and a compact mated height of 19.4 mm, with UL94V-2 nylon housing in natural color. The connector incorporates a double lock plate for complete contact loading, locking levers surrounded by protective walls to prevent wire tangling, and bubble-release design for potted applications. This connector is recognized by Underwriters Laboratories (File No. E28476) and certified by Canadian Standards Association (File No. LR7189), making it suitable for demanding power distribution applications requiring reliable mechanical and electrical performance.