The Square D Homeline 100 Amp 12-Space 24-Circuit Indoor Convertible Main Breaker Load Center with cover for Plug-on Neutral breakers is UL listed for residential and commercial power distribution. This load center is built with a plated, aluminum bus bar that is tested and listed only for Homeline circuit breakers. Homeline load centers are designed for the value-minded contractors, remodelers, builders and homeowners. Homeline load centers are engineered for fast installation and wire savings.