Which file should I choose?
Use OTPK0128560SRM20.STP.stp (revision A) to place the original solid geometry in your 3D assembly.

ABB OTPK0128560SRM20: original STEP for switching or transfer equipment layouts. OTPK0128560SRM20.stp, OTP16H3M1, 1SCA022432R1090, OTP16H3M1/10, 1SCA022608R9750, OTP16HB3M, 1SCA022401R2970, OTP16HB3M/D, 1SCA139638R1001, OTP16HT3M, 1SCA022400R9410, OTP16HT3M/10, 1SCA022641R7510, OTP16HT3M1, 1SCA022400R9320, OTP16HT3M1/10, 1SCA022641R7600.
Switchgear groups the devices that connect, disconnect and protect power circuits. A switchboard takes an incoming supply and distributes it to outgoing circuits.
Use OTPK0128560SRM20.STP.stp (revision A) to place the original solid geometry in your 3D assembly.
1 inspected original for ABB OTPK0128560SRM20: OTPK0128560SRM20.STP.stp (STEP). The manufacturer describes this configuration as OTPK0128560SRM20.stp, OTP16H3M1, 1SCA022432R1090, OTP16H3M1/10, 1SCA022608R9750, OTP16HB3M, 1SCA022401R2970, OTP16HB3M/D, 1SCA139638R1001, OTP16HT3M, 1SCA022400R9410, OTP16HT3M/10, 1SCA022641R7510, OTP16HT3M1, 1SCA022400R9320, OTP16HT3M1/10, 1SCA022641R7600.
STEP · 3.6 MB · Rev A
Download filename: OTPK0128560SRM20.STP.stp
Original manufacturer STEP geometry
1 inspected original for ABB OTPK0128560SRM20: OTPK0128560SRM20.STP.stp (STEP). The manufacturer describes this configuration as OTPK0128560SRM20.stp, OTP16H3M1, 1SCA022432R1090, OTP16H3M1/10, 1SCA022608R9750, OTP16HB3M, 1SCA022401R2970, OTP16HB3M/D, 1SCA139638R1001, OTP16HT3M, 1SCA022400R9410, OTP16HT3M/10, 1SCA022641R7510, OTP16HT3M1, 1SCA022400R9320, OTP16HT3M1/10, 1SCA022641R7600.
ABB supplied the original files through https://search.abb.com/library/Download.aspx?DocumentID=OTPK0128560SRM20.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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