The Square D Homeline 100 Amp 6-Space 12-Circuit Outdoor fixed Main Lugs Load Center is UL listed for residential and commercial power distribution. This load center is built with a plated, aluminum bus bar that is tested and is compatible with Square D Homeline circuit breakers. Homeline load centers are designed for the value-minded contractors, remodelers, builders and homeowners. Square D Homeline breaker boxes are engineered for fast installation and wire savings.