Load Center Number of Spaces 2 Amps 40 A Voltage 120/240V AC Circuit Breaker Type QO Included Enclosure Cover Surface Cover Main Circuit Breaker or Main Lug Main Lug Max No of Tandem Breakers 0 Phase 1 Series QO Height 9.38 in Width 4.88 in Depth 4 in For Use With Square D QO Circuit Breakers Bus Material Tin Plated Aluminum Short Circuit Current Rating 65kA Enclosure NEMA Rating 3R Cover Attachment Style Top Hinge Cover Closure Method Door Latch