5ST3043

**5ST3043** 

**Data sheet** 

Undervoltage release 230 V AC, with 2 terminals for miniature circuit breaker 5SL4, 5SY, 5SP RCBO 5SU1, FI 5SV (for 5SU1 handle coupler 5ST3805-1 is required) 

|**Model**|||||
|---|---|---|---|---|
|**product brand name**|||SENTRON||
|**product designation**|||Undervoltage release||
|**General technical data**<br>~~a~~|||||
|**switching function ON-delay/instantaneous contact**|||No||
|**type of voltage of the operating voltage for actuation**|||AC||
|**Control current**<br>~~a~~|||||
|**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**<br>~~re~~|||||
|**suitability for integration motor starterprotector**|||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**<br>~~CO~~|||0||
|**number of CO contacts**|||0||
|**Connections**|||||
|**type of electrical connection**|||screw terminal||
|**Mechanical Design**<br>~~a~~|||||
|**height**|||90 mm||
|**depth**<br>~~eS~~|||70 mm||
|**Net Weight**|||102g||
|**Approvals Certificates**|||||
|**Environment**|**General Product Approval**||**General Product Approval**||
|Environmental Con-<br>firmations<br>Environmental Con-<br>firmations<br>~~—~~|Miscellaneous<br>~~A~~T|||Confirmation|
|**General Product Ap-**<br>**proval**<br>**other**||||**Railway**|



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Confirmation Miscellaneous Special Test Certific-- ~~rs~~ ate 

Confirmation Miscellaneous Special Test Certific-- ~~rs~~ 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=5ST3043 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/5ST3043 

**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)** https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5ST3043 **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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5/30/2026 

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Subject to change without notice © Copyright Siemens 

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