What it is
The ABB ACS850-04-030A-5 sits in the ACS850 family of variable speed drives as a 30 A frame unit under the ABB Drives / Motor Drives category tree. The spec sheet lists the title as a variable speed drive under the ABB (ASEA Brown Boveri) brand, with a unit weight of 4.54 kg.
What the spec sheet does and does not tell you
The only quantified values on the data sheet are the order code itself and a 4.54 kg unit weight — no voltage class, current rating, horsepower, frame size beyond the 30 A code, IP rating, fieldbus option, or I/O count is listed. A buyer evaluating ACS850-04-030A-5 needs full nameplate data (line voltage, motor kW / hp, duty cycle, option slot population, brake chopper presence) before committing the order code, and none of those values are recoverable from this listing.
ACS850 vs the ACS880 cross-shop
Three ACS880-01 peers are listed as cross-shop candidates: ACS880-01-11A0-5 at 4.54 kg, ACS880-01-07A6-5 at 6.35 kg, and ACS880-01-021A-5 at 7.71 kg — different current codes and different masses, so none reads as a confirmed drop-in without nameplate verification. The ACS880-01-11A0-5 is the only peer that shares the 4.54 kg mass figure, which keeps it in the same handling class for panel swap-out, but the current-code change (30 A → 11 A0) means it is not the same current frame and should not be specified as a like-for-like replacement without checking the motor and overload sizing.