Terminal box, connection, 500 volts, 3 phase, Submersible to 15 feet, non-magnetic. Provided with main terminals for 200 MCM cables that permit feeding through the box and taps for up to 2 three phase branch circuits using up to 75 MCM cables. Terminals and bus bar are mounted on an insulator which is mounted in a 10 x 13 brass enclosure per MIL-E-24142/6-004. Symbol 575.1 per MIL-DTL-24558/29. Military Part Number M24558/29-575.1. NSN 5940-00-215-5966. Approximate weight 31 pounds.