Which file should I choose?
Use SMISSLINE SU401 UL MCB.step (revision A) to place the original solid geometry in your 3D assembly.

ABB SMISSLINE UL MCB 1P SU401: original STEP for busbar or distribution hardware layouts.
A circuit breaker opens and closes a power circuit and can interrupt it when its protection or trip system responds to a fault.
Use SMISSLINE SU401 UL MCB.step (revision A) to place the original solid geometry in your 3D assembly.
1 inspected original for ABB SMISSLINE UL MCB 1P SU401: SMISSLINE SU401 UL MCB.step (STEP).
STEP · 527 KB · Rev A
Download filename: SMISSLINE SU401 UL MCB.step
Original manufacturer STEP geometry
1 inspected original for ABB SMISSLINE UL MCB 1P SU401: SMISSLINE SU401 UL MCB.step (STEP).
ABB supplied the original files through https://search.abb.com/library/Download.aspx?DocumentID=SMISSLINE%20SU401%20UL%20MCB&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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