5SL4420-8

**5SL4420-8** 

**Data sheet** 

||Miniature circuit breaker 400 V 10kA, 4-pole, D, 20 A|
|---|---|
|**Model**<br>~~|~~||
|**product brand name**<br>~~|~~|SENTRON<br>~~|~~|
|**product designation**|Miniature circuit breaker|
|**General technical data**<br>~~|~~||
|**number ofpoles**<br>~~|~~|4<br>~~|~~|
|**design ofpole**|4P|
|**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 multi-phase operation at AC rated value|440 V|
|||
|**● operational current**||
|— at 30 °C rated value|20 A|
|**— at 40 °C rated value**|18.48 A|
|— at 55 °C rated value|15.92 A|
|**● operational current at AC rated value**|20 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|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>~~|~~|1.6 W<br>~~|~~|
|**suitability for operation**|Residential buildings/infrastructure|
|**Product details**||
|**product feature touchprotection**|Yes|
|product component neutral conductor switching|No|
|**product feature halogen-free**|Yes|
|**product feature sealable**<br>~~Oc~~|Yes|
|**product feature silicon-free**<br>~~Oc~~|Yes|
|**product extension installable supplementary devices**<br>~~Oc~~|Yes|
|**Connections**||
|**connectable conductor cross-section solid**||
|● minimum|0.75 mm²|



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|● 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**||||72 mm|||
|**depth**||||76 mm|||
|**installation depth**||||70 mm|||
|**number of modular width units**||||4|||
|**mounting position**<br>~~a~~|~~a~~|~~a~~|~~a~~|any<br>~~a~~|~~a~~|~~a~~|
|**Net Weight**||||600g|||
|**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**||**General Product Approval**|||
|Environmental Con-<br>firmations<br>Environmental Con-<br>firmations<br>~~an~~||||®||FAL|
|**General Product Approval**|||||**Test Certificates**|**other**|
|Confirmation<br>ARyv||ca||SE|Miscellaneous|Confirmation|
|**other**|||||||
|QC PASS|||||||
|**Further information**<br>~~Ps~~|||||||
|**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=5SL4420-8|||||||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**|||||||
|https://support.industry.siemens.com/cs/ww/en/ps/5SL4420-8|||||||
|**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=5SL4420-8|||||||
|**CAx-Online-Generator**|||||||



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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:** 7/23/2025 

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