ACH550-01-023A-4+B055 HVAC drive: application fit and replacement planning
ACH550-01-023A-4+B055 is an ABB HVAC-drive designation. The ACH550 family was tailored for fan, pump, compressor and building-service applications and includes HVAC-oriented functions such as integrated BACnet on supported versions. ABB marks ACH550 as no longer manufactured, so treat this type as a legacy/service or replacement-identification reference and verify availability before a new-project specification.
Key technical data
| Technical item | Verified value / selection note |
|---|---|
| Type designation | ACH550-01-023A-4+B055 |
| Drive family | ABB ACH550 HVAC-specific AC drive |
| Rated current code | 023A frame designation; verify exact output rating on nameplate |
| Supply class | Three-phase 380–480 V family; confirm regional code |
| Enclosure option | B055 denotes an enclosure/configuration option; verify exact IP rating from ABB code table |
| Lifecycle | ABB identifies ACH550 as no longer manufactured; lifecycle and replacement status must be checked |
Identification note: ACH550-01-023A-4+B055. The figures above are selection references; verify the actual label, duty rating, approvals, firmware and options for the exact unit before purchase or engineering release.
Procurement snapshot
Commercial check for ACH550-01-023A-4+B055: confirm current lifecycle, scope of supply, documentation and accessories before requesting a quotation.
- Confirm the installed type and revision.
- Check supply, load and environmental limits.
- Confirm compatible accessories and support status.
Related configurations
The following model references belong to the same identifiable family as ACH550-01-023A-4+B055; they are configuration alternatives, not automatic substitutes. Compare each complete designation and application before selecting.
No additional same-family designations were selected for the ACH550-01-023A-4+B055 representative page.
For the ACH550-01-023A-4+B055 record, retain the full type string and do not infer range, rating or compatibility from a shortened family code.
System compatibility
For an existing AHU, cooling tower, chiller or pump installation, ACH550-01-023A-4+B055 may be relevant to maintenance, parameter recovery or a controlled modernization. Check the control strategy, BMS protocol, bypass arrangement and process operating envelope before selecting a successor. Do not assume the newer ACH580 is a wiring- or parameter-identical replacement without engineering review.
Confirm the motor nameplate, drive output current, enclosure/IP designation, installed options, BACnet or other communication setup, bypass hardware and firmware. ACH550-01-023A-4+B055 should be compared against the complete cabinet drawing and load history. ABB lifecycle documents and the current local product channel should inform the replacement decision.
Keep the verified order information for ACH550-01-023A-4+B055 with the panel drawing, commissioning record and maintenance history.
Installation and acceptance
Before removing ACH550-01-023A-4+B055, save all parameters, fault history and BMS mappings and verify the mechanical/electrical interface. Lock out the supply and respect DC-link discharge time. Commission the replacement against the documented fan or pump sequence, verify safeties and communication points, then trend operation before handover.
Acceptance check: verify the functional response and diagnostics for ACH550-01-023A-4+B055 against the approved schematic, control narrative and current ABB instructions. Record test results, final settings and any deviation before handover.
For procurement, quote the complete designation ACH550-01-023A-4+B055 and state the required quantity, destination, duty and delivery window.
