776523-2 is an AMPSEAL 16 3-way plug connector designed for environmentally sealed electrical connections in industrial and commercial transportation applications. The connector features a 1.58 mm contact size with B key keying, black housing, gray PLR (Polylactic Resin), and reduced diameter seal configuration. It provides reliable mating with corresponding cap connectors and includes integrated wedge/TPA (Tertiary Positioning Aid) for secure contact retention. This connector is commonly used in automotive, industrial control, and transportation systems where environmental sealing and reliable electrical connectivity are critical requirements.