# Circuit Breaker, MCB, 5SL6, 3P+N, 6 kA, 400 V, 63 A
**URL**: https://novapart.co/products/5SL6663-6/circuit-breaker-mcb-5sl6-3pn-6-ka-400-v-63-a
**SKU**: 5SL6663-6
**Manufacturer**: SIEMENS
**Price**: €204.3300
**Stock**: 10+
## Specifications
| Parameter | Value |
|---|---|
| Product Range | SENTRON Series |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3475548/)
**5SL6663-6**
## **Data sheet**
||Miniature circuit breaker 400 V 6kA, 3+N-pole, B, 63 A|
|---|---|
|**Model**
~~|~~||
|**product brand name**
~~|~~|SENTRON
~~|~~|
|**product designation**|Miniature circuit breaker|
|**General technical data**
~~|~~||
|**number ofpoles**
~~|~~|4
~~|~~|
|**design ofpole**|3P+N|
|**tripping characteristic class**|B|
|**mechanical service life(operating cycles) typical**
~~Oe~~|10 000
~~Oe~~|
|**overvoltage category**
~~Oe~~|3
~~Oe~~|
|**degree of pollution**
~~Oe~~|2
~~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
permitted.|
|**insulation voltage (Ui)**||
|● with multi-phase operation at AC rated value|440 V|
|||
|**● operational current**||
|— at 30 °C rated value|63 A|
|**— at 40 °C rated value**|59.18 A|
|— at 55 °C rated value|52.93 A|
|**● operational current at AC rated value**|63 A|
|**Supply voltage**
~~|~~||
|supplyvoltage at AC
~~|~~|400 V
~~|~~|
|**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
voltage with peak value of 72V|
|**Protection class**
~~|~~||
|**protection class IP**
~~|~~|IP20, with connected conductors
~~|~~|
|**Breaking Capacity**
~~|~~||
|**switching capacity current**
~~|~~|~~|~~|
|● accordingto EN 60898 rated value
~~Oo~~|6 kA|
|● accordingto IEC 60947-2 rated value
~~Oo~~|6 kA|
|**energy limitation class**
~~Oo~~|3|
|**Dissipation**||
|power loss [W] for rated value of the current at AC in hot
operatingstateperpole
~~a~~|5.3 W
~~a~~|
|**suitability for operation**
~~a~~|Residential buildings/infrastructure
~~a~~|
|**Product details**||
|**product feature touchprotection**|Yes|
|product component neutral conductor switching|Yes|
|**product feature halogen-free**|Yes|
|**product feature sealable**
~~Os~~|Yes
~~Os~~|
|**product feature silicon-free**
~~Os~~|Yes
~~Os~~|
|**product extension installable supplementary devices**
~~Os~~|Yes
~~Os~~|
|**Connections**||
|**connectable conductor cross-section solid**||
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5/31/2026
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|||||
|---|---|---|---|
|● 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 end processing|
|● minimum|0.75 mm²|
|● maximum|25 mm²|
|tightening torque with screw-type terminals|
|● minimum|2.5 N·m|
|● maximum|3 N·m|
|a|Mechanical Design|
|height|90 mm|
|width|72 mm|
|depth|76 mm|
|installation depth|70 mm|
|number of modular width units|4|
|ee|mounting|position|any|
|Net Weight|644 g|
|Environmental conditions|
|ambient temperature during operation|
|● minimum|-25 °C|
|● maximum|45 °C|
|ambient temperature during storage|
|● minimum|-40 °C|
|● maximum|75 °C|
|ee|Approvals Certificates|
|Environment|General Product Approval|
|Environmental Con-|Environmental Con-|
|firmations|firmations|
|General Product Approval|other|
|Confirmation|Confirmation|
|_|UK|—___|oA|
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||||
|---|---|---|
|e|Further information|e|
|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=5SL6663-6|
|Service&Support (Manuals, Certificates, Characteristics, FAQs,...)|
|https://support.industry.siemens.com/cs/ww/en/ps/5SL6663-6|
|Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)|
|https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5SL6663-6|
|CAx-Online-Generator|
|https://www.siemens.com/cax|
|Tender specifications|
|https://www.siemens.com/specifications|
|Characteristic curves|
|https://curves.simaris.siemens.com/curves/|
**----- End of picture text -----**
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Subject to change without notice © Copyright Siemens
5/31/2026
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**last modified:**
10/10/2025
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Subject to change without notice © Copyright Siemens
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## Links
- [View this product on Novapart](https://novapart.co/products/5SL6663-6/circuit-breaker-mcb-5sl6-3pn-6-ka-400-v-63-a)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/siemens/5sl6663-6/rcbo-rcd-gfci-afdd-circuit-breakers/dp/3475548)
---
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