ACH550-01-045A-4+B055 is an ABB ACH550 frequency converter for HVAC applications, identified by ABB product number 3AUA0000013218. This configuration is rated for 22 kW applications and uses the +B055 enclosure option. Available product records consistently associate 3AUA0000013218 with the complete ACH550-01-045A-4+B055 designation.
The ACH550 series is ABB's dedicated drive family for HVAC applications, covering variable-speed control requirements for equipment such as fans and pumps. The 045A designation identifies the drive's current class, while the -4 voltage code corresponds to the 380–480 V three-phase range. The +B055 option identifies the IP54 enclosure configuration used for this model.
For spare-parts procurement, both ACH550-01-045A-4+B055 and 3AUA0000013218 should be retained as primary identification references, since either designation can be used to locate the same ABB frequency converter in equipment records and procurement databases.
Product Identification
| Item | Details |
|---|---|
| Brand | ABB |
| Series | ACH550 |
| Type Designation | ACH550-01-045A-4+B055 |
| ABB Product Number | 3AUA0000013218 |
| Product Type | Frequency Converter |
| Application | HVAC |
| Rated Motor Power | 22 kW |
| Rated Output Current | 45 A |
| Supply Voltage | 3-phase, 380–480 V |
| Enclosure | IP54 |
| Frame Size | R3 |
| Enclosure Option | +B055 |
| Main Category | Variable Speed Drive Systems |
The 22 kW rating, 380–480 V three-phase supply and IP54 configuration are listed for this specific model/product-number combination.
ACH550 HVAC Frequency Converter
The ACH550-01-045A-4+B055 belongs to ABB's ACH550 HVAC drive family. Unlike a general-purpose drive designation, ACH550 identifies a product range developed specifically around variable-speed HVAC applications.
The drive can be used in HVAC installations where motor speed needs to be adjusted according to operating requirements. Typical equipment associated with this drive family includes ventilation fans, air-handling equipment and HVAC pumping applications.
For an existing installation, the complete model designation is more useful than the series name alone. ACH550 includes multiple current and power ratings, and configurations with and without the +B055 enclosure option have different product numbers.
Model Configuration
The designation can be read as follows:
ACH550 - ABB HVAC drive family
-01 - wall-mounted drive configuration
-045A - 45 A current class
-4 - 380–480 V three-phase voltage class
+B055 - IP54 enclosure option
This makes ACH550-01-045A-4+B055 a distinct configuration from the closely related ACH550-01-045A-4, which is listed under ABB product number 3AUA0000013217 and has an IP21 configuration.
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Electrical & Mechanical Reference
| Characteristic | Value |
|---|---|
| Input Supply | 3-phase, 380–480 V |
| Rated Motor Power | 22 kW |
| Rated Output Current | 45 A |
| Frame Size | R3 |
| Enclosure Rating | IP54 |
| Application Class | HVAC |
| Drive Family | ACH550 |
The 22 kW and 45 A values are associated with the 045A-4+B055 configuration in ABB ACH550 product listings.
+B055 Configuration
The +B055 suffix is an important part of this product's identification. It distinguishes the IP54 version from the corresponding IP21 ACH550-01-045A-4 configuration.
For maintenance purchasing, it is therefore preferable to specify the complete:
ACH550-01-045A-4+B055
rather than shortening the request to ACH550-01-045A-4.
The two configurations are separately identified in ABB-related product records, with 3AUA0000013217 corresponding to ACH550-01-045A-4 and 3AUA0000013218 corresponding to ACH550-01-045A-4+B055.
HVAC Applications
The ACH550 family is intended for variable-speed HVAC equipment and is commonly associated with applications such as:
- Ventilation fans
- Supply and exhaust fans
- Air-handling equipment
- HVAC pumps
- Heating and cooling circulation
- Building ventilation systems
The 22 kW 045A configuration provides a higher-power option within the ACH550 product range while retaining the HVAC-specific drive platform.
Replacement Identification
When replacing an installed ACH550 frequency converter, the complete identification should be checked rather than relying only on the nominal motor power.
For this model, the following references are particularly important:
- ACH550-01-045A-4+B055
- 3AUA0000013218
- 45 A current class
- 22 kW motor rating
- 380–480 V three-phase supply
- +B055 enclosure option
- IP54 enclosure
The ABB product number 3AUA0000013218 is especially useful when searching procurement records because it uniquely distinguishes this configuration from the closely related 3AUA0000013217 / ACH550-01-045A-4 version.
Spare Parts & Maintenance
The ACH550-01-045A-4+B055 is suitable for spare-parts procurement and maintenance of existing ABB HVAC drive installations. Keeping both the type designation and ABB product number in maintenance records can make identification easier when equipment has been installed for an extended period.
For replacement purchasing, the existing drive nameplate should be checked against 3AUA0000013218 and the complete ACH550 type designation, particularly where enclosure configuration is important.
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