It is rated 820 A normal duty, 450 kW on a 380–480 V supply, frame R11. Normal-duty output current is 820 A; heavy-duty (constant-torque) is 625 A at 355 kW. Light-overload use is 810 A at 450 kW. That means you size the feeder and branch protection for the heavy-duty number if the load is a conveyor or crusher, and for the normal-duty number if it's a pump or fan.
IP00 open type, NEMA open — no enclosure, so it is meant for a clean, dry cabinet. The R11 frame is a module; you mount it on a backplate. Frequency range is 47.5–63 Hz.
