Square D sub-feed lug kits are UL Listed for use on Listed equipment. They have plug-on jaw construction and plug on to the I-Line bus stack in the same manner as branch circuit breakers. Lugs on these devices accommodate the same wire sizes as the equivalent ampere rated circuit breakers. This I-line sub-feed lug kit is 3 pole with 1200A current rating and is used for I-line, HCR-U panels with I-line circuit breakers. Mounting height is 15 inches and terminal data is 4 wires of AWG 3/0 - 600 kcmil. There are 4 conducters per lug.