5TT3440

**5TT3440** 

**Data sheet** 

Soft starting device 400 V AC 300-5500W 3PH Overall depth 55 mm 

**==> picture [510 x 412] intentionally omitted <==**

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|---|---|---|
|ees|Model|
|product brand name|SENTRON|
|product designation|Soft-starting device|
|design of the product|55 mm|
|ees|Supply voltage|
|operating voltage rated value|
|● minimum|230 V|
|● maximum|230 V|
|protection class IP|IP20|
|ns|Dissipation|
|power loss [W]|4.6 W|
|power loss [W] for rated value of the current at AC in hot|4.6 W|
|operating state per pole|
|Control current|
|ns|
|control supply voltage|
|● at AC at 50 Hz rated value minimum|230 V|
|● at AC at 50 Hz rated value maximum|230 V|
|● at AC at 60 Hz rated value minimum|230 V|
|● at AC at 60 Hz rated value maximum|230 V|
|Product function|
|ee|
|product function motor overload protection|No|
|ees|Mechanical Design|
|height|90 mm|
|width|105 mm|
|depth|55 mm|
|Net Weight|444 g|
|Environmental conditions|
|Ost|
|ambient temperature without derating rated value|55 °C|
|ee|Approvals Certificates|
|Environment|General Product Approval|
|Environmental Con-|Environmental Con-|Confirmation|
|firmations|firmations|

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**other** 

Subject to change without notice © Copyright Siemens 

5TT3440 Page 1/3 

6/4/2026 

Confirmation Miscellaneous ~~—_ ——~~ 

## **Further information** 

**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=5TT3440 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/5TT3440 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)** https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5TT3440 **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:** 

4/12/2025 

Subject to change without notice © Copyright Siemens 

5TT3440 Page 2/3 

6/4/2026 

Subject to change without notice © Copyright Siemens 

5TT3440 Page 3/3 

6/4/2026