The configured order code and what the suffixes mean
The part string ACS580-01-156A-4+C135+P940 carries the +C135 and +P940 suffixes appended to the base MPN. The order code has to be reproduced exactly — a base ACS580-01-156A-4 ships without those options. Listed weight is 54.43 kgs. That figure governs the lift plan and the panel layout for cable entry on the heavier enclosure.
What to compare it against when the BOM line is in question
The closest same-function candidate in the evidence is the ACS580-01-180A-4, which lists the same 54.43 kgs frame weight. The choice between them is a current-step decision on the motor side.