ABB · MACHINERY DRIVES
Migration background and scope of application
ACS355 is widely used in mechanical equipment inventory systems, and ACS380 is an important platform for ABB's current mechanical transmissions. When migrating, you should start from the complete type designation of ACS355, and then select ACS380 based on motor rated current, load characteristics, supply voltage, structural form and option code. Part numbers cannot correspond mechanically.
Use these part numbers to identify legacy equipment and evaluate migration paths. Before ordering, verify the complete ordering code, nameplate, motor or load conditions, existing wiring and required site functions.
Common legacy part numbers and successor models
| legacy model / Legacy | original product description | Successor / Replacement direction | replacement notes |
|---|---|---|---|
| ACS355-03U-01A2-4 | 3~ 380–480V, small frame | ACS380-040x-01A8-4 | Review with the official migration table and motor current |
| ACS355-03U-04A1-4 | 3~ 380–480V | ACS380-040x-05A6-4 | Check heavy load current and I/O |
| ACS355-03U-08A8-4 | 3~ 380–480V | ACS380-040x-12A6-4 | Check control methods/communications |
| ACS355-03U-23A1-4 | 3~ 380–480V | ACS380-040x-032A-4 | The base and installation dimensions need to be reviewed |
What needs to be checked before replacement
Procurement and migration advice
If the legacy part number still has reliable inventory, the purchase of spare parts for the original model can be evaluated first; if the equipment still needs to be operated for a long time, the successor platform should be evaluated simultaneously. For discontinued parts, the real risk is often not "will the new model start?" but rather whether the wiring, communications, software engineering, mounting dimensions, or whether a legacy option will still meet field requirements after migration.
When sending an inquiry, it is recommended to also provide the complete part number, quantity, photo of the equipment nameplate, site voltage/motor parameters, and whether successor models are accepted. In this way, "original model inventory" and "successor model migration" can be compared together as two sets of plans.
Frequently Asked Questions
Is the successor series of ACS355 ACS380?
For most mechanical applications, ACS380 is one of the main migration directions, but the specific model still needs to be checked according to the complete type designation and application conditions.
Can I directly find ACS380 based on the current number of ACS355?
Not recommended. The rated current codes of different platforms do not always correspond one-to-one. The rated current of the motor and ABB migration data should prevail.
Does the field wiring need to be modified?
It's possible. I/O terminals, communication options, safety features, and chassis construction should all be verified before replacement.
Can I still purchase the old ACS355?
There may still be inventory or channel resources in some markets. Both original model purchase and ACS380 migration paths can be evaluated simultaneously.
Need to check for a specific legacy part number?
By sending the complete part number, nameplate or BOM, we can confirm the availability of the original model before determining whether a successor model is needed.
