045527-0012 is a box mounting circular receptacle connector featuring 41 solder cup contacts in size 20 configuration, compliant with MIL-DTL 26482 Series I and Mil Battery standards. The connector utilizes an aluminum alloy shell with olive drab chromate over cadmium plating, copper alloy contacts with gold plating, and polychloroprene insulator material to ensure durability and corrosion resistance. It operates across a wide temperature range of -55°C to +125°C with a contact rating of 7.5 A at AWG20, insulator resistance of approximately 5000 MO, and test voltage of 1500 Vrms, achieving IP67 water tightness per DIN 40 050. The connector supports a minimum of 500 mating cycles and withstands vibration up to 200 m/s² at 10 to 2000 Hz, making it suitable for demanding military, aerospace, and industrial applications requiring reliable high-density interconnections in harsh environments.