What you're sourcing
The ABB ACS380-040S-07A2-4 is an ACS380-series motor drive, order code ACS380-040S-07A2-4. Listed weight is 1.81 kg. Reference the order code verbatim on the BOM so the trailing current code and supply class are not silently substituted.
Mounting and handling
At 1.81 kg the unit is a one-hand install on a DIN-rail or backplate cutout. For a panel-builder that matters less as a spec number than as a planning note: no lifting aid, no two-person lift, but also no chassis heavy enough to need a separate support bracket — the standard ACS380 mounting footprint is what governs layout, not the mass.
Sourcing posture
The ACS380-040S-07A2-4 is sourced to order against an RFQ using the exact MPN. Pin the order code verbatim on the purchase document so the 4-class supply suffix is not swapped for a 2-class equivalent.