Square D™ QO™ Main Lug Loadcenter, 30-Circuit, 120/240 VAC, 125 A, 30 Circuits, Plug-On Breaker Mounting, 3-Wire Wiring Configuration, 30 Spaces, 6 to 2/0 AWG Aluminum/Copper Wire, NEMA 1, Steel Housing, 29.86 in H x 14.25 in W x 3.75 in D