The 3AXD50001057640: The normal-use rating (450 kW / 460 A) is what you spec for constant-torque loads like conveyors or pumps running at full speed. If your BOM calls for 350 Hp on a UL-listed heavy-duty motor, this drive delivers that at 344 A. Light-overload use (450 kW / 442 A) sits between the two, giving you a little headroom for occasional overloads without stepping up to the next frame.
The frame R8i+R8i is a large cabinet-mount unit — plan for a dedicated floor-standing enclosure or a substantial wall-mount backplate. NEMA Type 1 is equivalent: indoor use only, no dripping or splashing. The altitude rating of 1000 m is standard for most installations; if you're above that, you'll need to derate the output current per the drive manual. Operating humidity range of 5 to 95% non-condensing covers most plant-floor conditions.
