# OTZT1A

ABB OTZT1A: switching-equipment reference for switch installation and operating arrangement. Manufacturer reference OTZT1A.STP.

## Equipment and file summary

Equipment / resource: OTZT1A
Manufacturer: ABB
Resource type: Named drawing reference
Manufacturer drawing: OTZT1A.STP
Manufacturer reference: OTZT1A.STP
Document revision: A
Model envelope: OTZT1A.stp: 121.5 × 35 × 95.3 mm (approximate X × Y × Z bounds of the tessellated source model)
Listed file formats: STEP
Listed files: 1
Available previews: 1 interactive model variants
Recorded revisions: A
Source checked: 2026-11-04
Download access: Email registration for site downloads; official source links are also available

## Related GA references

- [Switchgear panel](https://eloragrid.ai/objects/switchgear-panel)
- [Switchboard](https://eloragrid.ai/objects/switchboard)
- [Ring main unit](https://eloragrid.ai/objects/ring-main-unit)

Canonical page: https://eloragrid.ai/tools/cad-library/equipment/abb-otzt1a-cb0cb7b2da
Manufacturer: ABB
Entry type: Named drawing reference
Part number: Not specified — select exact configuration
Category: Switchboards & switchgear
Formats: STEP
Market discovery: Global
Access: Direct download
Official source: https://search.abb.com/library/Download.aspx?DocumentID=OTZT1A.STP&LanguageCode=en&DocumentPartId=&Action=Launch&DocumentRevisionId=A
Manufacturer evidence: https://search.abb.com/library/Download.aspx?DocumentID=OTZT1A.STP&LanguageCode=en&DocumentPartId=&Action=Launch&DocumentRevisionId=A
Source checked: 2026-11-04

1 original file is available to download here. Manufacturer sources and revisions are listed below.
Confirm the exact regional configuration against the selected manufacturer drawing.
The supplied configuration is “OTZT1A”. Keep those frame, mounting and accessory codes with the inserted drawing.


## In plain English

### Using the OTZT1A reference

ABB OTZT1A: switching-equipment reference for switch installation and operating arrangement. Manufacturer reference OTZT1A.STP.

### A simple example

Use OTZT1A.stp revision A for the supplied solid assembly in your 3D layout. Match the OTZT1A configuration named by ABB.

### What the drawings help you do

Use OTZT1A.stp revision A for the supplied solid assembly in your 3D layout.

### Before using this reference

- The supplied configuration is “OTZT1A”. Keep those frame, mounting and accessory codes with the inserted drawing.
- Check whether this reference is the switch body, an operating handle or another accessory. Handle and shaft references do not give the complete switch envelope or terminal clearances.
- OTZT1A.stp has approximate model bounds of 121.5 × 35 × 95.3 mm (approximate X × Y × Z bounds of the tessellated source model). Compare these model axes with the installation orientation; mounting and service clearances are separate requirements.

### What can I use the OTZT1A reference for?

Use this switching-equipment reference for switch installation and operating arrangement. The supplied configuration is “OTZT1A”. Keep those frame, mounting and accessory codes with the inserted drawing.

### Which manufacturer reference identifies this drawing?

ABB reference OTZT1A.STP. The file list retains the original source and recorded revision.

### Terms


Concept diagram: Identify OTZT1A → Select the drawing or model → Check the mounting interface
The supplied configuration is “OTZT1A”. Keep those frame, mounting and accessory codes with the inserted drawing.

- [ABB source](https://search.abb.com/library/Download.aspx?DocumentID=OTZT1A.STP&LanguageCode=en&DocumentPartId=&Action=Launch&DocumentRevisionId=A)


## Which file should I choose?

Use OTZT1A.stp revision A for the supplied solid assembly in your 3D layout.

## Official files

- OTZT1A.stp (STEP): https://search.abb.com/library/Download.aspx?DocumentID=OTZT1A.STP&LanguageCode=en&DocumentPartId=&Action=Launch&DocumentRevisionId=A
  Site download: https://eloragrid.ai/tools/cad-library/download/abb-otzt1a-cb0cb7b2da/20a5c1719e1a62d02f82
  Hosting basis: no-explicit-prohibition; publisher attribution: ABB; reviewed: 2026-11-04
  Rights review: Reviewed the available source, embedded drawing text and archive notices. No explicit applicable redistribution prohibition was identified. Rights remain unknown; no licence or manufacturer endorsement is asserted.; evidence: https://search.abb.com/library/Download.aspx?DocumentID=OTZT1A.STP&LanguageCode=en&DocumentPartId=&Action=Launch&DocumentRevisionId=A
  Purpose: Manufacturer drawing reference OTZT1A.STP; acquired: true; redistribution: unknown; SHA-256: 20a5c1719e1a62d02f823d49db484563530beebeb81361593e8ab09deb623a1d; revision: A

Global discovery is not proof of regional certification. Confirm exact configuration, revision, dimensional units and use rights with the manufacturer.