Which file should I choose?
Use OT400U12C.IGS.igs (revision A) to place the original solid geometry in your 3D assembly. The ZIP contains the unmodified OT400U12C.IGS.igs.

ABB OT400U12C: original IGES for switching or transfer equipment layouts. OT400U12C, OT400U12CP, transfer switch, transfer switches.
Switchgear groups the devices that connect, disconnect and protect power circuits. A switchboard takes an incoming supply and distributes it to outgoing circuits.
Use OT400U12C.IGS.igs (revision A) to place the original solid geometry in your 3D assembly. The ZIP contains the unmodified OT400U12C.IGS.igs.
1 inspected original for ABB OT400U12C: OT400U12C.IGS.igs (IGES). The manufacturer describes this configuration as OT400U12C, OT400U12CP, transfer switch, transfer switches.
IGES · 260 KB · Rev A
Download filename: OT400U12C.IGS.igs
Original manufacturer IGES geometry
1 inspected original for ABB OT400U12C: OT400U12C.IGS.igs (IGES). The manufacturer describes this configuration as OT400U12C, OT400U12CP, transfer switch, transfer switches.
ABB supplied the original files through https://search.abb.com/library/Download.aspx?DocumentID=OT400U12C.IGS&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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