The picture is of two MNPV12 combiners;Right one set up for GRID TIE 600 VDC with fuse holders;Left one is set up for OFF GRID 150 VDC circuit breakers;These are Great solar combiner boxes

• Midnite Solar Mnpv12 Photovoltaic Combiner Box - 12 Breakers

Midnite Solar Mnpv12 Photovoltaic Combiner Box - 12 BreakersMidnite Solar