# A2 2P M BRK KIT HDWARE ABB A2 2P M BRK KIT HDWARE: original STEP for circuit-breaker equipment layouts. MBA12 Main Breaker Kit Hardware CAD Model. ## Equipment and file summary Equipment / resource: A2 2P M BRK KIT HDWARE Manufacturer: ABB Resource type: Product Manufacturer configuration: MBA12 Main Breaker Kit Hardware CAD Model Manufacturer drawing identity: A2 2P M BRK KIT HDWARE Named pole configuration: 2P Source document: 1SQC173177D0201; revision A Source-model envelope: 285.8 × 185.2 × 99.5 mm 2D preview basis: The orthographic views are projected from the manufacturer 3D geometry. They are labelled separately from original dimensioned sheets and do not add manufacturer dimensions. Listed file formats: STEP Listed files: 1 Available previews: 1 drawing previews; 1 interactive model variants Recorded revisions: A Source checked: 2026-11-11 Download access: Email registration for site downloads; official source links are also available ## Related GA references - [Air circuit breaker](https://eloragrid.ai/objects/ga-air-circuit-breaker) - [Moulded-case circuit breaker](https://eloragrid.ai/objects/ga-moulded-case-circuit-breaker) Canonical page: https://eloragrid.ai/tools/cad-library/equipment/mfr-abb-a2-2p-m-brk-kit-hdware-060884de08 Manufacturer: ABB Entry type: Product Part number: Not specified — select exact configuration Category: Breakers & accessories Formats: STEP Market discovery: Global Access: Direct download Official source: https://search.abb.com/library/Download.aspx?DocumentID=1SQC173177D0201&LanguageCode=en&DocumentPartId=&Action=Launch Manufacturer evidence: https://search.abb.com/library/Download.aspx?DocumentID=1SQC173177D0201&LanguageCode=en&DocumentPartId=&Action=Launch Source checked: 2026-11-11 Inspected originals are available from this website through the existing download email prompt. Manufacturer source discovery; confirm the exact regional equipment configuration and certification separately. MBA12 Main Breaker Kit Hardware CAD Model ## In plain English ### What the equipment does A circuit breaker opens and closes a power circuit and can interrupt it when its protection or trip system responds to a fault. ### A simple example 1SQC173177D0201.zip (revision A) is the original ABB archive. Open MBA12.stp inside it to place the original solid geometry in your 3D assembly. ### What the drawings help you do 1SQC173177D0201.zip (revision A) is the original ABB archive. Open MBA12.stp inside it to place the original solid geometry in your 3D assembly. ### Before using this reference - Match the recorded manufacturer configuration: MBA12 Main Breaker Kit Hardware CAD Model - Named pole configuration: 2P - The supplied model has approximate X × Y × Z bounds of 285.8 × 185.2 × 99.5 mm. These are source-model axes; mounting holes and installation clearances must come from the matching manufacturer sheet. - The orthographic views are projected from the manufacturer 3D geometry. They are labelled separately from original dimensioned sheets and do not add manufacturer dimensions. - The source was checked on 2026-11-11; recorded file revisions: 1SQC173177D0201.zip — A. Use Documentation & sources to check for a newer issue. ### Which original files are supplied for A2 2P M BRK KIT HDWARE? 1 inspected original for ABB A2 2P M BRK KIT HDWARE: 1SQC173177D0201.zip (ZIP). The manufacturer describes this configuration as MBA12 Main Breaker Kit Hardware CAD Model. ### Where did these ABB files come from? ABB supplied the original files through https://search.abb.com/library/Download.aspx?DocumentID=1SQC173177D0201&LanguageCode=en&DocumentPartId=&Action=Launch. The source reference, revision, original bytes and checksum are retained with each download. ### Terms - CAD: Computer-aided design files used to prepare drawings and models. - Revision: The recorded version of a drawing or model. Concept diagram: Identify A2 2P M BRK KIT HDWARE → Choose ZIP → Check the matching source configuration A simplified explanation of how this item works. It does not show terminal wiring or an operating procedure. - [ABB official source](https://search.abb.com/library/Download.aspx?DocumentID=1SQC173177D0201&LanguageCode=en&DocumentPartId=&Action=Launch) ## Which file should I choose? 1SQC173177D0201.zip (revision A) is the original ABB archive. Open MBA12.stp inside it to place the original solid geometry in your 3D assembly. ## Official files - 1SQC173177D0201.zip (ZIP): https://search.abb.com/library/Download.aspx?DocumentID=1SQC173177D0201&LanguageCode=en&DocumentPartId=&Action=Launch&DocumentRevisionId=A Site download: https://eloragrid.ai/tools/cad-library/download/mfr-abb-a2-2p-m-brk-kit-hdware-060884de08/abb-e3a31075c358104e13bf Hosting basis: no-explicit-prohibition; publisher attribution: ABB; reviewed: 2026-11-11 Rights review: Public manufacturer/supplier CAD original inspected with its included notices; no explicit applicable reproduction prohibition identified. Rights remain unknown.; evidence: https://search.abb.com/library/Download.aspx?DocumentID=1SQC173177D0201&LanguageCode=en&DocumentPartId=&Action=Launch&DocumentRevisionId=A Purpose: Original manufacturer CAD archive; acquired: true; redistribution: unknown; SHA-256: c801c43f1b95b0529ad70f3d8badff5ddcc6e1818c8e8bfc4aac445ebfaf2ff0; revision: A - MBA12.stp Global discovery is not proof of regional certification. Confirm exact configuration, revision, dimensional units and use rights with the manufacturer.