5SL6125-7

**5SL6125-7** 

## **Data sheet** 

||Miniature circuit breaker 230/400 V 6kA, 1-pole, C, 25A|
|---|---|
|**Model**<br>~~|~~||
|**product brand name**<br>~~|~~|SENTRON<br>~~|~~|
|**product designation**|Miniature circuit breaker|
|**General technical data**<br>~~|~~||
|**number ofpoles**<br>~~|~~|1<br>~~|~~|
|**design ofpole**|1P|
|**tripping characteristic class**|C|
|**mechanical service life(operating cycles) typical**<br>~~Oe~~|10 000<br>~~Oe~~|
|**overvoltage category**<br>~~Oe~~|3<br>~~Oe~~|
|**degree of pollution**<br>~~Oe~~|2<br>~~Oe~~|
|**Voltage**||
|**type of voltage of the operating voltage**|AC|
|**type of voltage**|Use only in alternating current or direct current circuits. Mixed use is not<br>permitted.|
|**insulation voltage (Ui)**||
|● with single-phase operation at AC rated value|250 V|
|● with multi-phase operation at AC rated value|440 V|
|||
|**● operational current**||
|— at 30 °C rated value|25 A|
|**— at 40 °C rated value**|23.48 A|
|— at 55 °C rated value|21 A|
|**● operational current at AC rated value**|25 A|
|**Supply voltage**<br>~~|~~||
|supplyvoltage at AC<br>~~|~~|400 V<br>~~|~~|
|**value range of the supply voltage frequency**|50/60 Hz|
|**operating voltage**||
|● with multi-phase operation at AC maximum|440 V|
|● at DC rated value maximum|62.5 V|
|●|The operational voltage 62,5V DC/pole takes into account a battery charging<br>voltage with peak value of 72V|
|**Protection class**<br>~~|~~||
|**protection class IP**<br>~~|~~|IP20, with connected conductors<br>~~|~~|
|**Breaking Capacity**<br>~~|~~||
|**switching capacity current**<br>~~|~~|~~|~~|
|● accordingto EN 60898 rated value|6 kA|
|● accordingto IEC 60947-2 rated value<br>~~Oo~~|6 kA<br>~~Oo~~|
|**energy limitation class**<br>~~Oo~~|3<br>~~Oo~~|
|**Dissipation**||
|power loss [W] for rated value of the current at AC in hot<br>operatingstateperpole<br>~~Oo~~|2.6 W<br>~~Oo~~|
|**suitability for operation**<br>~~Oo~~|Residential buildings/infrastructure<br>~~Oo~~|
|**Product details**||
|**product feature touchprotection**|Yes|
|product component neutral conductor switching|No|
|**product feature halogen-free**|Yes|
|**product feature sealable**<br>~~Oe~~|Yes<br>~~Oe~~|
|**product feature silicon-free**<br>~~Oe~~|Yes<br>~~Oe~~|
|**product extension installable supplementary devices**<br>~~Oe~~|Yes<br>~~Oe~~|
|**Connections**||



5SL61257 Page 1/5 

Subject to change without notice © Copyright Siemens 

5/30/2026 

|**connectable conductor cross-section solid**|||||
|---|---|---|---|---|
|● minimum||0.75 mm²|||
|● maximum||25 mm²|||
|**connectable conductor cross-section stranded**|||||
|● minimum||0.75 mm²|||
|● maximum||25 mm²|||
|**connectable conductor cross-section finely stranded with**|||||
|**core endprocessing**|||||
|● minimum||0.75 mm²|||
|● maximum||25 mm²|||
|**tightening torque with screw-type terminals**|||||
|● minimum||2.5 N·m|||
|● maximum||3 N·m|||
|**Mechanical Design**<br>~~a~~|||||
|**height**||90 mm|||
|**width**||18 mm|||
|**depth**||76 mm|||
|**installation depth**||70 mm|||
|**number of modular width units**||1|||
|**mounting position**<br>any<br>~~re~~|||||
|**Net Weight**||130g|||
|**Environmental conditions**|||||
|**ambient temperature during operation**|||||
|● minimum||-25 °C|||
|● maximum||45 °C|||
|**ambient temperature during storage**|||||
|● minimum||-40 °C|||
|● maximum||75 °C|||
|**Approvals Certificates**<br>~~a~~|||||
|**Environment**|||**General Product Approval**||
|Environmental Con-<br>firmations<br>~~———~~<br>e|Environmental Con-<br>firmations<br>~~a~~|||Miscellaneous<br>~~——~~|
|EPD|||||
|**General Product Approval**||||**other**|
|Confirmation<br>{~~r~~e||||Confirmation|
|**Further information**<br>~~ee~~|||||
|**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=5SL6125-7|||||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**|||||
|https://support.industry.siemens.com/cs/ww/en/ps/5SL6125-7|||||
|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)**|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)**||||
|https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5SL6125-7|||||
|**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>|||||



5SL61257 Page 2/5 

Subject to change without notice © Copyright Siemens 

5/30/2026 

**==> picture [286 x 741] intentionally omitted <==**

**----- Start of picture text -----**<br>
18 6,2 68,3<br>on f<br>ine<br>—= ®<br>2<br>io ©<br>-F<br>10/10/2025 4<br>1<br>,<br>90<br>1<br>2<br>**----- End of picture text -----**<br>


**last modified:** 

5SL61257 Page 3/5 

Subject to change without notice © Copyright Siemens 

5/30/2026 

5SL61257 Page 4/5 

Subject to change without notice © Copyright Siemens 

5/30/2026 

5SL61257 Page 5/5 

Subject to change without notice © Copyright Siemens 

5/30/2026