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  • Lifecycle status

    Discontinued / Obsolete by OEM
    Apter Power can review current sourcing options for this exact model.

421-1-10479-390

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ABB 421-1-10479-390 Circuit Board for exact-model replacement.
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Ships by Wednesday, October 28
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Technical specifications for 421-1-10479-390

  • Manufacturer:
    ABB
  • Part Number:
    421-1-10479-390
  • Product Family:
    ABB Bailey
  • Product Type:
    Circuit Board
  • Stock:
    1
  • Board marking:
    421/MA/10478/0000
  • Weight:
    0.38 kg
  • Estimated shipping dimensions:
    17.3 x 1 x 31.2 cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Selection Installation Service Checks Applications

Features:

  • Exact product identity: 421-1-10479-390 is the complete ABB reference for this item.
  • Assembly-level matching: Compare the installed equipment record before selecting a replacement item.
  • Configuration boundary: Similar part or assembly numbers must not be treated as interchangeable without system-specific confirmation.
421-1-10479-390 is retained as the complete identity for an exact-model maintenance request.

The installed equipment record should be read with the product identification before a sourcing decision.

The model, hardware location and connection context help keep the review focused on the required unit.

Apter Power supports documentation review, quotation and sourcing for the ABB 421-1-10479-390 Electronic Assembly Board.
ABB 421-1-10479-390 Electronic Assembly Board Manuals,Datasheets,Link
Important Notice: Review the complete model and installed configuration before using any documentation for service work.
  • Use the complete 421-1-10479-390 identity when assessing a replacement.
  • Compare the removed item with the installed system record.
  • Do not treat related hardware as automatically interchangeable.
  • Installation of 421-1-10479-390 should be carried out by qualified personnel.
  • Follow the approved site isolation and handling procedure.
  • Confirm the installed connection arrangement before energising.
  • Record the exact 421-1-10479-390 identity before service work.
  • Inspect the removed unit and its connection context for relevant differences.
  • Follow the host-equipment service procedure for functional checks.
  • 421-1-10479-390 is supplied for maintenance and exact-model sourcing support.
  • Use it only after the installed equipment context has been reviewed.
  • Apter Power can assist with documentation and quotation enquiries.
Description
421-1-10479-390 is an ABB electronic assembly board identified by the full board number supplied for the installed equipment. Retaining that exact identity helps maintain a clear link between the physical board and the system maintenance record.

For a repair request, 421-1-10479-390 should be matched to the removed board’s connector position and assembly marking. Board-level hardware can look similar while serving a different function in the same control equipment.

When sourcing a discontinued assembly, 421-1-10479-390 gives maintenance teams a focused reference for legacy support. The board number, revision evidence and installed system location should remain together throughout the evaluation.
Alternative Names
421/1/10479/390 421110479390 421 1 10479 390 421-1-10479-39O 421/MA/10478/0000 421 MA 10478 0000
Technical notes
421-1-10479-390 is identified as an ABB assembly board, making its exact board marking and installed position the key service boundary. Similar circuit boards cannot be assumed to perform the same role. Stop a replacement review until the removed board number, revision evidence and connector context are available.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should a maintenance buyer use 421-1-10479-390 when requesting a replacement board?
Use 421-1-10479-390 as the purchasing identity and provide photos of both board sides with the request. The board marking 421/MA/10478/0000 can be included as a cross-reference, but it does not establish functional equivalence. Do not approve an offered board whose complete assembly number differs.
When should an engineer stop a substitution review for 421-1-10479-390?
Stop the review if the candidate differs in complete assembly number, if its connectors do not match the removed board, or if the host equipment cannot be identified. Similar board geometry or a related marking is not sufficient evidence of an electrically or firmware-compatible substitute.
What should a service team send with a 421-1-10479-390 quotation request?
Send the complete assembly number, the 421/MA/10478/0000 board marking, photographs of both sides, connector positions, and the host equipment make and model. This lets a supplier screen the request for identity differences before quotation; it does not substitute for engineering approval of a replacement.

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