Siemens E1020MB1100FCGP Indoor Main Breaker Load Center, 100 AmpHighlights: 22,000 AIR 14 3 4" x 12 3 8" 3 7 8" Single phase, 3 wire, 10 spaces and 20 circuits, 120 040 volt One piece bus bar construction designed for use only with circuit breakers Simple dead front adjustment after trim is installed Positive load side circuit breaker hook rails Two 15 amp single pole and one 30 amp double pole breakers included UL listed