The ABB 3BBR0000083582P01 is a Frame Size R8 variant of the ACS580-01 general-purpose drive, rated at 246 A. This is the order code for the ACS580-01-246A-4 configuration, which means it's built for 400 V class three-phase input and output. The R8 frame tells you the physical footprint and power range — this is a larger cabinet-mount drive, not a wall-mount unit.
What the Frame Size Means for Fit
Frame R8 is the physical envelope that houses the 246 A power stage. It determines the mounting hole pattern, gland plate entry, and busbar layout inside the panel. If you're replacing an existing R8 drive, the bolt pattern and cable entry points match the ABB standard for that frame. If you're retrofitting from a different brand, you'll need to check the overall dimensions against your backplate — R8 is a common size but not universal.