Square D by Schneider Electric QO Plug-On Neutral 100 Amp Main Breaker 24-Space 24-Circuit Indoor Load Center with Cover QO, 100A Main Breaker Installed Load Center Plug On Neutral Combination Cover For Flush Or Surface Mount 24 Space Circuit 24 Single Poles Engineered for a quick Plug-on Neutral breaker connection on every circuit, fewer connections, faster installation, no pigtails frees up gutter space Includes a factory-installed indoor cover Accommodates plug-on secondary surge arrestor (sold separately) Overhead/underground feed simply by rotating the device before installing Single phase; Rated 120/240 VAC and 22,000 AIR short circuit current rating