Square D™ Homeline™ Main Breaker Loadcenter, 1-Phase Convertible Neutral, 120/240 VAC, 150 A, 1 Pole, 50/60 Hz Frequency, 22 kA Interrupt, 60 Circuits, HOM Breaker, Panel Breaker Mounting, 3-Wire Wiring Configuration, 30 Spaces, 4 AWG to 250 kcmil, 4 AWG to 300 kcmil Wire, Flush/Plug-On/Surface Mounting, NEMA 1 Enclosure, 10 Enclosure Box, Steel Housing Material, 14.25 in W x 3.75 in D x 33.78 in H Dimensions