5ST3040

**5ST3040** 

**Data sheet** 

Undervoltage release 230 V AC, with 6 terminals for miniature circuit breaker 5SL4, 5SY, 5SP RCBO 5SU1, FI 5SV (for 5SU1 handle coupler 5ST3805-1 is required) 

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|||||
|---|---|---|---|
|||Model|
|product brand name|SENTRON|
|product designation|Undervoltage release|
|||General technical data|
|switching function ON-delay/instantaneous contact|No|
|type of voltage of the operating voltage for actuation|AC|
|||Control current|
|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|
|||Suitability|
|suitability for integration motor starter protector|No|
|suitability for integration overload relay|No|
|suitability for use load switch|No|
|suitability for use circuit breaker|No|
|number of NC contacts|0|
|number of NO contacts|2|
|Oo|
|number of CO contacts|0|
|Connections|
|type of electrical connection|screw terminal|
|||Mechanical Design|
|height|90 mm|
|Oo|depth|70 mm|
|Net Weight|115 g|
|Approvals Certificates|
|Environment|General Product Approval|
|Environmental Con-|Environmental Con-|Miscellaneous|Confirmation|
|firmations|firmations|
|—|—|FAD|
|General Product Ap-|other|Railway|
|proval|

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~~——~~ Confirmation 

~~—_—~~ Miscellaneous 

Confirmation 

- Special Test Certific ate 

~~eee~~ **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=5ST3040 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/5ST3040 

**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)** https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5ST3040 

**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> 

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**last modified:** 

5/26/2025 

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Subject to change without notice © Copyright Siemens 

5/31/2026