The Square D Homeline 200 Amp 30-Space 40-Circuit Outdoor Convertible Main Breaker Load Center Value Pack 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.