Which file should I choose?
Use 1SDH001336R0027.stp (revision A) to place the original solid geometry in your 3D assembly.

ABB E1.2 III W REAR SEGREGATION EF ES - UL: original STEP for circuit-breaker equipment layouts. E1.2 3D Drawing Emax 2 UL.
A circuit breaker opens and closes a power circuit and can interrupt it when its protection or trip system responds to a fault.
Use 1SDH001336R0027.stp (revision A) to place the original solid geometry in your 3D assembly.
1 inspected original for ABB E1.2 III W REAR SEGREGATION EF ES - UL: 1SDH001336R0027.stp (STEP). The manufacturer describes this configuration as E1.2 3D Drawing Emax 2 UL.
STEP · 43 KB · Rev A
Download filename: 1SDH001336R0027.stp
Original manufacturer STEP geometry
1 inspected original for ABB E1.2 III W REAR SEGREGATION EF ES - UL: 1SDH001336R0027.stp (STEP). The manufacturer describes this configuration as E1.2 3D Drawing Emax 2 UL.
ABB supplied the original files through https://search.abb.com/library/Download.aspx?DocumentID=1SDH001336R0027&LanguageCode=en&LanguageCode=it&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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