Where the ACS800-U1 family sits
The ACS800-U1-0120-5+L503: Wall-mount ACS800-U1 units are the panel-integrator's form factor inside the ACS800 family — a single-cabinet drive meant to land directly on the back panel of a control enclosure rather than a through-panel or cabinet-built module, which is why the 22.68 kg figure matters for rigging and for the panel's load-bearing spec during the mechanical design step. Because the ACS800-U1 ships as a self-contained unit, the +L503 option is wired into the build at the factory rather than added as a field-installable card.