Product Info Catalog Electrical & Lighting Fuses & Circuit Breakers Circuit Breaker Accessories QO100A Main Load Center QO100A Main Load Center QO100A Main Load Center QO100A Main Load Center Request a Quote UPC: 785901978480 Manufacturer: Square D By Schneider Electric SKU: 192260 Model Number: QO124M100PC QO, 100A Main Breaker Installed Load Center, Plug On Neutral, Combination Cover For Flush Or Surface Mount, 24 Space Circuit 24 Single Poles.