121583-0002 is an APD 4-way socket plug connector designed for transportation and industrial applications requiring robust electrical connectivity. The connector operates at 48 VDC with a maximum contact resistance of 5 mO and withstands 1000 VAC for 60 seconds, ensuring reliable performance in demanding environments. It features Code 3 green mechanical keying (RAL 6029), IP 67 + IP 69K sealing per DIN EN 60529, and is rated for 50 mating cycles with a coupling torque of 1.2 Nm maximum. The connector maintains functionality across a temperature range of -40°C to +140°C and demonstrates excellent fluid compatibility with brake fluid, ATF, and fuel. Housing is constructed from PBT GF with HNBR sealing material, making it ideal for automotive and industrial harness applications where environmental protection and durability are critical.