It runs on a 525...600 V three-phase supply at 50/60 Hz, in Frame R2.
Frame R2 tells you the physical footprint and the general current band this drive sits in — it's the second-smallest frame in the family, sized for motors in the lower power range of the 525-600 V class. The IP21 enclosure with NEMA Type 1 rating means it's suitable for indoor, clean environments where drips or falling dirt are the main concern; no washdown or outdoor exposure. Wall-mounting keeps it off the floor, which matters for panel layout in pump stations or treatment plants where floor space is tight.