Cutler-Hammer Main Lug Load Center, 1-Phase Split Neutral, Series: BR Series, 120/240 VAC, 225 A, 10 kA Interrupt, 42 Circuits, BR Breaker, 3-Wire Wiring Configuration, 42 Spaces, 1 AWG to 300 kcmil Al/Cu Wire, Surface Mount, NEMA 1, NEMA 5 Enclosure Box, 3 in L x 4.5 in W x 9.44 in H