5ST3045

**5ST3045** 

## **Data sheet** 

||Undervoltage release 24 V DC, with 2 terminals for miniature circuit breaker 5SL4,|Undervoltage release 24 V DC, with 2 terminals for miniature circuit breaker 5SL4,|Undervoltage release 24 V DC, with 2 terminals for miniature circuit breaker 5SL4,|Undervoltage release 24 V DC, with 2 terminals for miniature circuit breaker 5SL4,|
|---|---|---|---|---|
||5SY, 5SP RCBO 5SU1, FI 5SV (for 5SU1 handle coupler 5ST3805-1 is required)||||
|**Model**<br>~~SE~~|||||
|**product brand name**||SENTRON|||
|**product designation**||Undervoltage release|||
|**General technical data**<br>~~Se~~|||||
|**switching function ON-delay/instantaneous contact**||No|||
|**type of voltage of the operating voltage for actuation**||DC|||
|**Control current**<br>~~Se~~|||||
|**control supply voltage**|||||
|● at DC rated value minimum||24 V|||
|● at DC rated value maximum||24 V|||
|**Suitability**<br>~~Se~~|||||
|**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>~~re~~||0|||
|**number of CO contacts**||0|||
|**Connections**|||||
|**type of electrical connection**||screw terminal|||
|**Mechanical Design**<br>~~Se~~|||||
|**height**||90 mm|||
|**depth**<br>~~re~~||70 mm|||
|**Net Weight**||95g|||
|**Approvals Certificates**|||||
|**Environment**<br>**General Product Approval**||**General Product Approval**|||
|Environmental Con-<br>firmations<br>Environmental Con-<br>firmations<br>Miscellaneous<br>~~—~~<br>~~—~~||FADE||Confirmation<br>ss|
|**General Product Ap-**<br>**proval**<br>**other**|||**Railway**||
|Confirmation<br>i||Miscellaneous|Special Test Certific-<br>ate||
|CA<br>{acpass|||||
|**Further information**<br>~~SS~~|||||
|**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=5ST3045|||||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**|||||
|https://support.industry.siemens.com/cs/ww/en/ps/5ST3045|||||
|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)**|||||



5ST3045 Page 1/2 

Subject to change without notice © Copyright Siemens 

5/30/2026 

https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5ST3045 **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:** 4/4/2025 

5ST3045 Page 2/2 

Subject to change without notice © Copyright Siemens 

5/30/2026