Singleph MCB LC 400A 42 CKT Nema 3R BR Style Load Center, 42 Spaces, 42 Circuits, 400 A, 120/240 V Ac, 3/0 Awg to 250 Kcmil Wire Size, Metallic Material, Aluminum Bus Material, 16.31 In Overall Length, 6.38 In Overall Width, 66.56 In Overall Height