Light-overload current (IlD) at 58 A is the same power, just a slightly lower current draw — the drive is not over-dimensioned for heavy starts. The IE2 efficiency level means it meets the base EU efficiency tier for motor drives; not premium, but compliant for standard HVAC fan and pump duty.
Wall-mounted HVAC drives like this one go into air handlers, chiller pumps, cooling tower fans, and ventilation systems — anywhere a 30 kW motor needs variable speed on a 380-480 V supply. The frame size R4 determines the mounting footprint and gland plate layout for the incoming mains and motor cables.