In order to get up to code, I replaced an existing MNPV6 with an MNPV Disco. I purchased my DISCO from Colorado Solar cosolar.com. This box combines two PV source circuits as it enters the power shed. Packaging -- the Disco came in an 8 inch deep box with about 3 inches of void and corner padding pieces to bring the combiner flush with the top of the packaging box. This was an early production run so I hope that later Midnite will come up with the right size box for this model -- I always appreciated the compact and slick packaging of the MNPV6s.
The MNPV Disco box is identical in width and height to the mnpv 6, but it is about 3/4 inch deeper than the mnpv6 to accommodate the breaker activator mechanism. At first, I figured that I could swap just the outside front cover and the plastic cover between the two boxes without having to undo the cabling and strain relief on the existing mnpv6, but I was not able to close back on the metal cover fully on the old box this way so I went ahead and replaced everything. In every other respect the disco is identical inside to the mnpv6 - uses the same DIN rail breakers too -- so I was able to swap out the negative bar from my old box. The big red lockable disconnect switch operates smoothly and has a good solid feel. It took a little fiddling to fit the activator mechanism to the back of the shutoff but once you realize how it works, it gets easy. This is a really nice solid design that saves time and reduces installation cost since it combines the shutoff and breaker into one box.