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 42 Voltage 120/208 to 240V AC Phase 3 Bus Material Aluminum Recommended Enclosure 1D700 for Main Breaker 6B429 for Main Lug Circuit Breaker Type Plug In Miniature For Use With NQ Circuit Breakers Height 33 in Depth 5 3/4 in Width 10 7/16 in Main Circuit Breaker Adapter Kit 4HHA3 4HHA4 Mfr No NQMB2KI