What the listing is
The ACS800-31-0070-3: The drive weighs 45.36 kgs, which puts it in the bracket a panel builder has to plan around — two-person lift, cabinet floor-rail mounting, and shipping crate sizing all flow from that figure rather than from any electrical rating shown on the listing.
What the class is used for
Drives in the Motor Drives tier are sized to feed three-phase induction or permanent-magnet motors from a fixed AC bus, so a unit at this frame is normally specified into a cabinet section that already has the line reactor, line filter, and braking chopper staged ahead of it.
Sourcing close
For a BOM line that already names ACS800-31-0070-3, the procurement action is to send the order code and the panel context (motor kW, supply voltage, brake option, I/O card) into an RFQ so the drive is specified into the line rather than swapped on a guess.