this is probably a bit out of scope - but here goes:
In the image below, besides the DC AIO for my SuperMax retrofit I need terminal blocks, fused rails and even a nice relay / opto I/O board as noted in the Pics. I've dug around on McMaster Carr.... But I'm not sure what these things are called or where ya'll like to shop for this stuff. I plucked this from your pic's slideshow - so I know it's a customers setup. Any tips on where to get the strips, what type they may be, the rail fuses and contactors source etc would be welcome!
Attachment 264922