What the order code covers
The ABB ACS850-04-03A6-5+J400+L518 is a cabinet-mount industrial drive in the 2 HP class, identified by ABB's ACS850-04 frame designation with the +J400 and +L518 option codes appended to the base part string — those suffixes carry through to the nameplate and any replacement order, so both the base code and the full suffix string must be quoted on the PO line.
Handling note
Listed weight is 5.44 kgs — a one-person lift is fine for an installer pulling it onto a backplate, but the cabinet layout still needs to account for that mass at the mounting flange and for the bend radius of the power cables feeding the line side, not just the drive footprint.
Cross-family sourcing reality
For the line-down RFQ, the base string plus both option codes is what has to be specified — a bare ACS850-04-03A6-5 ships without the +J400 and +L518 features, and a quote that omits them is a different configuration, not the same drive.