Which file should I choose?
Use OTLK251611SBB.STP.stp (revision D) to place the original solid geometry in your 3D assembly. The ZIP contains the unmodified OTLK251611SBB.STP.stp.

ABB OTLK251611SBB: original STEP for switching or transfer equipment layouts. OTLK251611SBB.stp OTL36T3BLU1 1SCA128746R1001.
Switchgear groups the devices that connect, disconnect and protect power circuits. A switchboard takes an incoming supply and distributes it to outgoing circuits.
Use OTLK251611SBB.STP.stp (revision D) to place the original solid geometry in your 3D assembly. The ZIP contains the unmodified OTLK251611SBB.STP.stp.
1 inspected original for ABB OTLK251611SBB: OTLK251611SBB.STP.stp (STEP). The manufacturer describes this configuration as OTLK251611SBB.stp OTL36T3BLU1 1SCA128746R1001.
STEP · 513 KB · Rev D
Download filename: OTLK251611SBB.STP.stp
Original manufacturer STEP geometry
1 inspected original for ABB OTLK251611SBB: OTLK251611SBB.STP.stp (STEP). The manufacturer describes this configuration as OTLK251611SBB.stp OTL36T3BLU1 1SCA128746R1001.
ABB supplied the original files through https://search.abb.com/library/Download.aspx?DocumentID=OTLK251611SBB.STP&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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