Which file should I choose?
Use 53540919-90.PDF.pdf to read the original sheet, including its annotations and any marked dimensions. The selected drawing sheet is page 1.

ABB Mounting Plate, PN 185-21: original PDF for switchboard enclosure or mounting hardware layouts.
Mounting hardware holds equipment in its intended position. Rails, plates, adapters and supports each provide a particular attachment or support arrangement.
Use 53540919-90.PDF.pdf to read the original sheet, including its annotations and any marked dimensions. The selected drawing sheet is page 1.
1 inspected original for ABB Mounting Plate, PN 185-21: 53540919-90.PDF.pdf (PDF).
PDF · 48 KB · Reference document
Download filename: 53540919-90.PDF.pdf
Original manufacturer drawing sheet
1 inspected original for ABB Mounting Plate, PN 185-21: 53540919-90.PDF.pdf (PDF).
ABB supplied the original files through https://search.abb.com/library/Download.aspx?DocumentID=53540919-90.PDF&LanguageCode=en&DocumentPartId=&Action=Launch. The source reference, revision, original bytes and checksum are retained with each download.
Original publisher: ABB. Source checked 2026-11-11. Original bytes are preserved; file links and document references identify the source.
Manufacturer source discovery; confirm the exact regional equipment configuration and certification separately.
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