What lands in the panel
The ABB ACS355-03U-01A2-4+K452 is the 0.37 kW point in the ACS355 micro-drive range, and the suffix is a factory option bundle — for a sourcing buyer that means the order code has to be quoted complete, base code plus +K452, or the option group won't be honoured at the factory. Chassis mass is 1.36 kgs, so it sits in the handling-trivial range — one-handed on the DIN rail or a couple of screws into the backplate, no lift plan needed.
Sizing intent and what 0.37 kW actually buys
At 0.37 kW this is the bottom of the ACS355 line — the right drive for fractional-horsepower induction or permanent-magnet motors on conveyors, small fans, pumps, or mixers where the load profile is light and the run-time is long.
If the BOM is currently pegged to an ACS310
Same caveat for ACS310-03U-06A2-4: closer in frame family, but the current class is different and the panel layout won't carry over cleanly. Treat them as cross-shop candidates at the panel-design stage, not as field replacements for a downed ACS355.