What the order code carries
The ABB ACS355-03U-01A2-4+J400+K452 is built on the ACS355 micro-drive platform, specified for a 3-phase 380-480 V supply, and is ordered with the +J400 and +K452 factory option suffixes appended to the base drive code. Those suffixes are the part of the string a sourcing buyer has to match — the base drive by itself is not the same build.
Where this class sits on the line
The ACS355 family is the small-horsepower ABB drive tier used for standalone machine control — conveyors, fans, pumps, mixers — where the cabinet is tight and the I/O count is modest. On a hot-strip mill that tier is not the workhorse for the reheat furnace or the roughing stands, but it is exactly what you find on the coiler side-rollers, the lubrication skids, and the exit-section bridle drives that have to hold strip tension without taking the radiant heat of the mill floor. Mass is 1.36 kgs, which sets the handling case for a single-person swap from the front of the panel — no rigging, no second pair of hands — and keeps the panel-load calculation inside the same envelope as the rest of the ACS355 row.
Same-class siblings, not drop-ins
Peer ABB ACS310 codes ACS310-03U-02A6-4, ACS310-03U-06A2-4, and ACS310-03U-08A3-2 share the 1.36 kgs mass figure from the evidence on hand. Cross-shopping against this ACS355 build still requires verifying the +J400/+K452 option set, firmware, and control-terminal mapping.
Sourcing posture
The part is specified into active BOM lines and is quoted to order against an RFQ. Send the full string ACS355-03U-01A2-4+J400+K452 with the +J400 and +K452 options called out, not just the base code.