The 3-1564526-1 is an 18-way tab housing from the HDSCS (Heavy Duty Sealed Connector Series). It is designed to accept 1.5K contacts and features a green thermoplastic body with a group E, 3 key configuration for precise mating. This connector housing is equipped with a sealed flange for secure mounting and includes an integrated secondary lock to ensure contact alignment and retention. As part of the environmentally sealed HDSCS family, it is rated for an operating temperature of -40°C to +140°C and achieves an IP67 ingress protection level, making it ideal for harsh environments found in industrial and commercial transportation applications.