3WL9111-0AT21-0AA0

Zone Selective Interlocking, 3WL Series Air Circuit Breaker

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: SIEMENS
Product type: Circuit Breaker Accessories
Product Range: -

Delivery and price
Units per pack	1
Price	378.88 €
Current stock	10+
Lead time	30 days

Datasheet

**3WL9111-0AT21-0AA0** 

## **Data sheet** 

||accessories circuit breaker 3WL zone selective Interlocking f. ETU45B, 76b can be|accessories circuit breaker 3WL zone selective Interlocking f. ETU45B, 76b can be|accessories circuit breaker 3WL zone selective Interlocking f. ETU45B, 76b can be|accessories circuit breaker 3WL zone selective Interlocking f. ETU45B, 76b can be||
|---|---|---|---|---|---|
||connected to cubicle bus|connected to cubicle bus||||
|**Model**<br>~~a~~||||||
|**product brand name**|SENTRON|||||
|**product designation**<br>Accessories for 3WL circuit breaker<br>~~es~~||||||
|**design of the product**|Time-selective protection control for ETU45B||Time-selective protection control for ETU45B|||
|**Accessories**||||||
|**accessories**|other|||||
|**Mechanical Design**<br>~~a~~||||||
|**Net Weight**|0.24 kg|||||
|**Approvals Certificates**<br>~~a~~||||||
|**Environment**<br>**General Product Approval**||||||
|Environmental Con-<br>firmations<br>Environmental Con-<br>firmations<br>Confirmation<br>~~—~~<br>~~—~~<br>fT<br>YK<br>ce||||||
|**Test Certificates**<br>**other**||||||
|Miscellaneous<br>Confirmation||||||
|~~OO~~||||||
|QC PASS||||||
|**Further information**<br>~~a~~||||||
|**Information on the packaging**||||||
|https://support.industry.siemens.com/cs/ww/en/view/109813875||||||
|**Information for data generation and storage**||||||
|https://support.industry.siemens.com/cs/ww/en/view/109995012||||||
|**Information- and Downloadcenter (Catalogs, Brochures,…)**||||||
|https://www.siemens.com/lowvoltage/catalogs||||||
|**Industry Mall (Online ordering system)**||||||
|https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3WL9111-0AT21-0AA0||||||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**||||||
|https://support.industry.siemens.com/cs/ww/en/ps/3WL9111-0AT21-0AA0||||||
|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)**||||||
|https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=3WL9111-0AT21-0AA0||||||
|**CAx-Online-Generator**||||||
|https://www.siemens.com/cax||||||
|**Tender specifications**||||||
|https://www.siemens.com/specifications||||||
|**Characteristic curves**||||||
|https://curves.simaris.siemens.com/curves/<mmp_prod_noCOMP="HAUPT"></mmp_prod__no>||||||
|**last modified:**|5/24/2025|||||



Subject to change without notice © Copyright Siemens 

3WL91110AT210AA0 Page 1/1 

5/30/2026

Updated at June 7, 2026

About Novapart

Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.

Learn more →

Stock Shortage Specialist

When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.

Request a quote →

Compliant Alternatives

We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.

BOM Analysis service →