What the line carries
The ACH580-01-023A-4 is the ACH 580 series drive in the Motor Drives line, weighing 6.80 kgs in this frame.
Frame and footprint
Listed weight is 6.80 kgs, which sets the panel load expectation and the lift handling for a wall-mount install on this frame. The next-step-down 014A-4 in the same ACH580-01 wall-mount family carries the identical 6.80 kgs figure in this listing, so the chassis is not what changes between the two codes — the ampere frame does.
Same function, different frame — the real contrast
Picking against a true same-class alternative: the ACH580-01-014A-4 sits one current-rating step below in the same 01-frame series and is listed at 6.80 kgs, matching the 023A-4's chassis mass — the swap is a parameter drop, not a panel rework. The ACH580-VCR-027A-4 and ACH580-PDR-027A-4+B056 are not same-frame swaps — at 13.61 kgs and 16.33 kgs respectively they are different enclosures, so they do not interchange with the 023A-4 in the existing cutout.