The Square D Homeline Value Pack 200 Amp 20-Space 40-Circuit interior security Main Breaker Load Center for Plug-on person breakers the cover, a selection of breakers and is UL traded for human action and ad power distribution. This load lineman is with a plated, aluminum bus bar that is tested and traded exclusively for Homeline circuit breakers. Homeline load centers are for the value-minded contractors, remodelers, builders and homeowners. Homeline load centers are for profligate installation and wire savings.