What it is and where it fits
The ABB ACS800-04-0400-3 is a low-voltage industrial drive in the ACS800-04 wall-mount / module class, used to vary speed and torque on three-phase motor loads in panels across heavy-industry lines.
Sourcing posture for a legacy ABB platform
Buyers chasing a line-down spare usually get faster answers through the independent / surplus channel than waiting on a factory build slot, since the part is identified and quoted by order code.
Integration points the panel builder watches
The drive sits in the Motors & Motor Controls category under Drives / Motor Drives, placing it on the power-circuit side of the panel alongside line input, motor output, and DC-link stages shared with contactors, reactors, and filters. With 92.99 kgs on the bill of materials, the panel layout has to clear the lifting eye, leave service access to the front, and route cabling so the gland plate entry does not collide with the module's deeper chassis — a quick mount-and-mark walk-through before the drive lands saves a rework on a live panel.