100kVA is 150A 3-phase, so I'm guessing 160A fuses. You won't find MCBs above 15kA in most cases, and MCCB options cost a lot.
Depending on what loads have to be supported you might want to look at two 80A fused-switches each feeding normal 125A or similar TPN boards with MCB/RCBO in them. The fuses will have total selectivity with the supply fuse, and for faults near the ends of final circuits probably selectivity MCB/fuse, but that would need checking if short cables, etc.
Depending on what loads have to be supported you might want to look at two 80A fused-switches each feeding normal 125A or similar TPN boards with MCB/RCBO in them. The fuses will have total selectivity with the supply fuse, and for faults near the ends of final circuits probably selectivity MCB/fuse, but that would need checking if short cables, etc.
