Which file should I choose?
Use OTPK0128560SRM25.STP.stp (revision A) to place the original solid geometry in your 3D assembly.

ABB OTPK0128560SRM25: original STEP for switching or transfer equipment layouts. OTPK0128560SRM25.stp OTP16H3M25 1SCA022699R3000 OTP16H3M251 1SCA022699R3340 OTP16H3M251/10 1SCA022699R3420 OTP16HB3M25 1SCA022699R3690 OTP16HT3M25 1SCA022699R3770 OTP16HT3M25/10 1SCA022699R3850 OTP16HT3M251 1SCA022699R4070 OTP16HT3M251/10 1SCA022699R4150.
Switchgear groups the devices that connect, disconnect and protect power circuits. A switchboard takes an incoming supply and distributes it to outgoing circuits.
Use OTPK0128560SRM25.STP.stp (revision A) to place the original solid geometry in your 3D assembly.
1 inspected original for ABB OTPK0128560SRM25: OTPK0128560SRM25.STP.stp (STEP). The manufacturer describes this configuration as OTPK0128560SRM25.stp OTP16H3M25 1SCA022699R3000 OTP16H3M251 1SCA022699R3340 OTP16H3M251/10 1SCA022699R3420 OTP16HB3M25 1SCA022699R3690 OTP16HT3M25 1SCA022699R3770 OTP16HT3M25/10 1SCA022699R3850 OTP16HT3M251 1SCA022699R4070 OTP16HT3M251/10 1SCA022699R4150.
STEP · 3.7 MB · Rev A
Download filename: OTPK0128560SRM25.STP.stp
Original manufacturer STEP geometry
1 inspected original for ABB OTPK0128560SRM25: OTPK0128560SRM25.STP.stp (STEP). The manufacturer describes this configuration as OTPK0128560SRM25.stp OTP16H3M25 1SCA022699R3000 OTP16H3M251 1SCA022699R3340 OTP16H3M251/10 1SCA022699R3420 OTP16HB3M25 1SCA022699R3690 OTP16HT3M25 1SCA022699R3770 OTP16HT3M25/10 1SCA022699R3850 OTP16HT3M251 1SCA022699R4070 OTP16HT3M251/10 1SCA022699R4150.
ABB supplied the original files through https://search.abb.com/library/Download.aspx?DocumentID=OTPK0128560SRM25.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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