Terminal box, connection, 12 terminals, 2 wires per terminal, 500 volts, 100 amps per terminal, submersible (SBM-15), non-magnetic, max cable size 40 MCM. Consists of 12 2-wire compression type brass terminals mounted on a GME insulator within an 8 x 10 x 5" deep brass enclosure assembly per MIL-E-24142/6. The removable cover is gasketed to provide submergence to a depth of 15 feet. Cable entrance is made by the installing activity through the side walls of the enclosure via stuffing tubes to maintain the enclosure effectiveness. SYM476.1 per MIL-DTL-24558/21. Part Number M24558/21-476.1 NSN 5940-00-296-6714.