Square D Panel Packages combine a service entrance main breaker loadcentre and a selection of QO circuit breakers in a convenient package for quick installation. This panel package is ready is be installed as a replacement for an older fuse box or to upgrade from an older breaker panel. Backed by an industry leading lifetime warranty, this Square D loadcentre offers the combination of a high quality loadcentre and branch breakers ready for any home. 1 Phase, 3 Wire, 120/240VAC. Combination flush/surface cover with door included. CSA approved for vertical, horizontal or inverted mounting and suitable for Al/Cu conductors. Tin plated copper bus bars. Factory installed bolt on main breaker with straight-in wiring.