Image not available
Illustrative purposes only
5ST3781-2
Series Connector, 16 mm2, 200 mm, 1P, 450 VAC, 80 A, Blue, Circuit Breakers
⚠️ 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: SENTRON Series
| Delivery and price | |
|---|---|
| Units per pack | 10 |
| Price | 7.23 € |
| Current stock | 10+ |
| Lead time | 30 days |
**5ST3781-2** **Data sheet** series connector, 1-pole, 200 mm, 16 mm2, blue, 750 V, 80 A |**Model**<br>~~I~~|**Model**<br>~~I~~|**Model**<br>~~I~~|**Model**<br>~~I~~| |---|---|---|---| |**product brand name**||SENTRON|| |**product designation**<br>~~rs~~||Series connector|| |**design of the product**||Accessories|| |**General technical data**|||| |**design of pole**||N|| |**Supply voltage**<br>~~a~~|||| |operatingvoltage at AC rated value||450 V|| |**Mechanical Design**<br>~~a~~|||| |**height**||34.3 mm|| |**depth**||22 mm|| |**length**<br>~~rs~~||200 mm|| |**Net Weight**||54g|| |**Approvals Certificates**|||| |**Environment**<br>**General Product Approval**||**General Product Approval**|| |Environmental Con-<br>firmations<br>Environmental Con-<br>firmations<br>Miscellaneous<br>~~—~~<br>~~—~~<br>~~FA~~D|||Confirmation| |**General Product Ap-**<br>**proval**<br>**other**|||| |Confirmation<br>us|||| |CAs<br>[acpass|||| |**Further information**<br>~~eee~~|||| |**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=5ST3781-2|||| |**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**|||| |https://support.industry.siemens.com/cs/ww/en/ps/5ST3781-2|||| |**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)**|||| |https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5ST3781-2|||| 5ST37812 Page 1/3 Subject to change without notice © Copyright Siemens 6/3/2026 ## **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:** 4/6/2026 5ST37812 Page 2/3 Subject to change without notice © Copyright Siemens 6/3/2026 5ST37812 Page 3/3 Subject to change without notice © Copyright Siemens 6/3/2026
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 →