The 1871412-1 is a black-keyed, 18-position tab housing from the Heavy Duty Sealed Connector Series (HDSCS) for without-flange mounting. As part of the Group E size configuration, it is designed to accept eighteen size 1.5K AMP MCP contacts, each capable of carrying up to 20 amps. The housing is made from rugged, glass-filled PBT thermoplastic and features an integrated secondary lock with a poke-yoke design to ensure proper contact alignment and retention. Engineered for harsh conditions, this connector operates from -40°C to +140°C and provides an IP67 sealed connection, making it suitable for demanding industrial and commercial vehicle applications.