045539-0001 is a straight plug circular connector conforming to MIL-DTL 26482 Series I and Mil Battery standards, featuring 61 size 20 contacts arranged in a 24-61 configuration. The connector employs a shell size 24 aluminum alloy body with olive drab chromate over cadmium plating, grommet seal endbell, and polychloroprene insulator material for environmental protection. Contacts are copper alloy with gold plating and solder cup termination, rated for 7.5 A at AWG20, with an insulation resistance of approximately 5000 MO and test voltage of 1500 Vrms. The connector operates reliably across a temperature range of -55°C to +125°C, supports 500 minimum mating cycles, and achieves IP67 sealing (0.2 bar pressure over 48 hours) per DIN 40 050. This connector is ideal for military, aerospace, and industrial applications requiring robust, sealed circular connections with high contact density and reliable performance in harsh environments.