Panelboard Interior, Convertible, Main Lug, Circuit Breaker Series QHB, QOB, QOB-VH, Amps 225 A, Short Circuit Current Rating 100000 RMS Symmetrical, Number of Spaces 30, Voltage 120/208 to 240V AC, Phase 3, Bus Material Copper, Recommended Enclosure 1D691 for Main Lug, 1D698 for Main Breaker, Circuit Breaker Type Plug In Miniature, For Use With NQ Circuit Breakers, Height 27 in, Depth 5 3/4 in, Width 10 7/16 in, Main Circuit Breaker Adapter Kit 4HHA3, 4HHA4, Mfr. No. NQMB2KI