Square D™ I-Line™ Panelboard Interior, 3-Phase Bottom Type HCM, 600 VAC/250 VDC, 600 A, 60 Hz Frequency, 27 Spaces, 200 kA Short Circuit, Q2H Breaker, 3-Wire Wiring Configuration, Aluminum Bus, Panel Mounting, NEMA 1/3R/5/12 Enclosure, Aluminum/Copper Housing Material, 32 in W x 8-1/4 in D x 48 in H Dimensions