# Circuit Breaker, MCB, 5SL4, 3P+N, 10 kA, 400 V, 63 A
**URL**: https://novapart.co/products/5SL4663-8/circuit-breaker-mcb-5sl4-3pn-10-ka-400-v-63-a
**SKU**: 5SL4663-8
**Manufacturer**: SIEMENS
**Price**: €372.9900
**Stock**: 10+
## Specifications
| Parameter | Value |
|---|---|
| Product Range | SENTRON Series |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3475337/)
**5SL4663-8**
**Data sheet**
Miniature circuit breaker 400 V 10kA, 3+N-pole, D, 63 A
**Model product brand name** SENTRON ~~iC~~ **product designation** Miniature circuit breaker **General technical data** ~~a~~ **number of poles** 4 **design of pole** 3P+N **tripping characteristic class** D **mechanical service life (operating cycles) typical** 10 000 **overvoltage category** 3 **degree of pollution** 2 **Voltage** ~~a~~ **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** 59.67 A — at 55 °C rated value 54.29 A **● operational current at AC rated value** 63 A **Supply voltage** ~~a~~ supply voltage 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** ~~a~~ **protection class IP** IP20, with connected conductors ~~a~~ **Breaking Capacity switching capacity current** ● according to EN 60898 rated value 10 kA ● according to IEC 60947-2 rated value 10 kA ~~a~~ **Dissipation** power loss [W] for rated value of the current at AC in hot 5 W operating state per pole **suitability for operation** Residential buildings/infrastructure 5SL46638 Subject to change without notice Page 1/5 6/4/2026 © Copyright Siemens
|**Product details**
~~a~~|**Product details**
~~a~~|**Product details**
~~a~~|
|---|---|---|
|**product feature touchprotection**
~~a~~||Yes
~~a~~|
|product component neutral conductor switching||Yes|
|**product feature halogen-free**||Yes|
|**product feature sealable**||Yes|
|**product feature silicon-free**
~~ee~~||Yes
~~ee~~|
|**product extension installable supplementary devices**
~~ee~~||Yes
~~ee~~|
|**Connections**|||
|**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**
~~a~~|||
|**height**
~~a~~||90 mm
~~a~~|
|**width**||72 mm|
|**depth**||76 mm|
|**installation depth**||70 mm|
|**number of modular width units**||4|
|**mounting position**
~~ee~~||any
~~ee~~|
|**Net Weight**
~~ee~~||645g
~~ee~~|
|**Environmental conditions**|||
|**ambient temperature during operation**|||
|● minimum||-25 °C|
|● maximum||55 °C|
|**ambient temperature during storage**|||
|● minimum||-40 °C|
|● maximum||75 °C|
|**Approvals Certificates**
~~|~~|||
|**Environment**
~~|~~|**General Product Approval**
~~|~~||
**Further information** ~~_ee~~ 5SL46638 Subject to change without notice Page 2/5 6/4/2026 © Copyright Siemens
## **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=5SL4663-8 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/5SL4663-8 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)** https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5SL4663-8
**CAx-Online-Generator** https://www.siemens.com/cax
**Tender specifications** https://www.siemens.com/specifications
**Characteristic curves** https://curves.simaris.siemens.com/curves/
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Subject to change without notice © Copyright Siemens
6/4/2026
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last modified: 10/10/2025
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## Links
- [View this product on Novapart](https://novapart.co/products/5SL4663-8/circuit-breaker-mcb-5sl4-3pn-10-ka-400-v-63-a)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/siemens/5sl4663-8/rcbo-rcd-gfci-afdd-circuit-breakers/dp/3475337)
---
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