5SL4540-8

**5SL4540-8** 

## **Data sheet** 

||Miniature circuit breaker 230 V 10kA, 1+N-pole, D, 40 A|
|---|---|
|**Model**<br>~~|~~||
|**product brand name**<br>~~|~~|SENTRON<br>~~|~~|
|**product designation**|Miniature circuit breaker|
|**General technical data**<br>~~|~~||
|**number ofpoles**<br>~~|~~|2<br>~~|~~|
|**design ofpole**|1P+N|
|**tripping characteristic class**|D|
|**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|
|||
|**● operational current**||
|— at 30 °C rated value|40 A|
|**— at 40 °C rated value**|37.89 A|
|— at 55 °C rated value|34.47 A|
|**● operational current at AC rated value**|40 A|
|**Supply voltage**<br>~~|~~||
|supplyvoltage at AC<br>~~|~~|230 V<br>~~|~~|
|**value range of the supply voltage frequency**|50/60 Hz|
|**operating voltage**||
|● 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|10 kA|
|● accordingto IEC 60947-2 rated value|10 kA|
|**Dissipation**<br>~~|~~||
|power loss [W] for rated value of the current at AC in hot<br>operatingstateperpole<br>~~|~~<br>~~a~~|3.3 W<br>~~|~~<br>~~a~~|
|**suitability for operation**<br>~~a~~|Residential buildings/infrastructure<br>~~a~~|
|**Product details**||
|**product feature touchprotection**|Yes|
|product component neutral conductor switching|Yes|
|**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**||
|**connectable conductor cross-section solid**||
|● minimum|0.75 mm²|
|● maximum|25 mm²|



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|**connectable conductor cross-section stranded**|**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**|||36 mm|||
|**depth**|||76 mm|||
|**installation depth**|||70 mm|||
|**number of modular width units**|||2|||
|**mounting position**<br>any<br>~~—$_§—_§_—~~||||||
|**Net Weight**|||0.312 kg|||
|**Environmental conditions**||||||
|**ambient temperature during operation**||||||
|● minimum|||-25 °C|||
|● maximum|||55 °C|||
|**ambient temperature during storage**||||||
|● minimum|||-40 °C|||
|● maximum|||75 °C|||
|**Approvals Certificates**<br>~~a~~||||||
|**Environment**||**General Product Approval**||||
|Environmental Con-<br>firmations<br>Environmental Con-<br>firmations<br>~~an~~|||®||EAL|
|**General Product Approval**||||**Test Certificates**|**other**|
|Confirmation<br>ARY||CC|EK|Miscellaneous|Confirmation|
|**other**||||||
|**Further information**<br>**Information on the packaging**<br>QC PASS~~a~~||||||
|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=5SL4540-8||||||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**||||||
|https://support.industry.siemens.com/cs/ww/en/ps/5SL4540-8||||||
|**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=5SL4540-8||||||
|**CAx-Online-Generator**||||||
|https://www.siemens.com/cax||||||



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## **Tender specifications** 

https://www.siemens.com/specifications **Characteristic curves** https://curves.simaris.siemens.com/curves/<mmp_prod_noCOMP="HAUPT"></mmp_prod__no> 

**last modified:** 10/10/2025 

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Subject to change without notice © Copyright Siemens 

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