# Circuit Breaker, MCB, 5SY8, 3P, 25 kA, 400 V, 0.3 A

![Product image](https://novapart.co/image/farnell:3477038/)

**URL**: https://novapart.co/products/5SY8314-7/circuit-breaker-mcb-5sy8-3p-25-ka-400-v-03-a
**SKU**: 5SY8314-7
**Manufacturer**: SIEMENS
**Price**: €174.3400
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Product Range | SENTRON Series |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3477038/)

**5SY8314-7** 

**Data sheet** 

Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P, C0.3 

|ee<br>Gere)|Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P, C0.3|
|---|---|
|**Model**<br>~~TT~~||
|**product brand name**<br>~~TT~~|SENTRON<br>~~TT~~|
|**product designation**|Miniature circuit breaker|
|**General technical data**<br>~~SS~~||
|**number ofpoles**<br>~~SS~~|3<br>~~SS~~|
|**design ofpole**<br>~~SS~~|3P<br>~~SS~~|
|**tripping characteristic class**|C|
|**mechanical service life(operating cycles) typical**|10 000|
|**overvoltage category**|3|
|**degree of pollution**|3|
|**Voltage**<br>~~EE~~<br>~~-~~||
|**type of voltage of the operating voltage**<br>~~EE~~<br>~~-~~|AC<br>~~-~~|
|**insulation voltage (Ui)**<br>~~EE~~<br>~~-~~|~~-~~|
|● with single-phase operation at AC rated value|440 V|
|● with multi-phase operation at AC rated value|440 V|
|**supply voltage with single-phase operation at AC rated**<br>**value**|230 V|
|||
|**● operational current**||
|— at 50 °C rated value|0.29 A|
|— at 55 °C rated value|0.28 A|
|**● operational current at AC rated value**|0.3 A|
|**Supply voltage**<br>~~a~~||
|**supply voltage**<br>~~a~~|~~a~~|
|● at AC|400 V|
|**value range of the supply voltage frequency**|50/60 Hz|
|**Protection class**<br>~~ee~~||
|**protection class IP**<br>~~ee~~|IP20, with connected conductors<br>~~ee~~|
|**Breaking Capacity**<br>~~a~~||
|**switching capacity current**<br>~~a~~|~~a~~|
|● at DC accordingto IEC 60947-2 rated value|15 kA|
|● accordingto IEC 60947-2 rated value|70 kA|
|**energy limitation class**|3|
|**Dissipation**<br>~~TT~~||
|power loss [W] for rated value of the current at AC in hot<br>operatingstateperpole<br>~~TT~~|0.9 W<br>~~TT~~|
|**suitability for operation**|Infrastructure / Industry|
|**Product details**<br>~~TT~~||
|**product feature touch protection**<br>~~TT~~|Yes<br>~~TT~~|



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||**product component**|||
|---|---|---|---|
||● combined terminal top|Yes||
||● combined terminal bottom|Yes||
||● neutral conductor switching|No||
||**product feature properties for main switches in accordance**<br>**with EN 60204-1**|Yes||
||**product feature halogen-free**|Yes||
||**product feature sealable**|Yes||
||**product feature silicon-free**|Yes||
||**product extension installable supplementary devices**|Yes||
||**Product function**|||
||**set values setting current(Ii) for I-tripping**|8||
||**reference value setting current(Ii) for I-tripping**|x In||
||**Short circuit**|||
||**short-circuit current breaking capacity (Icn)**|||
||● at AC accordingto UL 1077 and CSA C22.2 No.235|5 kA||
||**Connections**|||
||**connectable conductor cross-section solid**|||
||● minimum|0.75 mm²||
||● maximum|35 mm²||
||**connectable conductor cross-section stranded**|||
||● minimum|0.75 mm²||
||● maximum|35 mm²||
||**connectable conductor cross-section finely stranded with**<br>**core endprocessing**|||
||● minimum|0.75 mm²||
||● maximum|25 mm²||
||**AWG number as coded connectable conductor cross**<br>**section**|||
||● minimum|18||
||● maximum|4||
||**tightening torque[lbf·in] with screw-type terminals**|||
||● minimum|22 lbf·in||
||● maximum|31 lbf·in||
||**tightening torque with screw-type terminals**|||
||● minimum|2.5 N·m||
||● maximum|3.5 N·m||
||**position of power supply cord**|Any||
||**Mechanical Design**|||
||**height**|90 mm||
||**width**|54 mm||
||**depth**|76 mm||
||**installation depth**|70 mm||
||**number of modular width units**|3||
||**fastening method**|DIN rail||
||**mounting position**|any||
||**Net Weight**|483g||
||**Environmental conditions**|||
||**influence of the surrounding temperature**|max. 95% RH upto 55°C||
||**standard**|IEC / EN 60947-2 / UL1077||
||**vibration resistance according to IEC 60068-2-6**|±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz||
||**ambient temperature during operation**|||
||● minimum|-25 °C||
||● maximum|55 °C||
||**ambient temperature during storage**|||
||● minimum|-40 °C||
||● maximum|75 °C||
||**number of test cycles for environmental testing according**<br>**to IEC 60068-2-30**|6||
||**Approvals Certificates**|||



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**Environment General Product Approval** Environmental ConEnvironmental ConMiscellaneous firmations firmations **General Product Approval other** Confirmation ~~—~~ ce es ~~_~~ Confirmation ~~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=5SY8314-7 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/5SY8314-7 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)** https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5SY8314-7 **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> 

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## Links

- [View this product on Novapart](https://novapart.co/products/5SY8314-7/circuit-breaker-mcb-5sy8-3p-25-ka-400-v-03-a)
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- [Supplier page](https://es.farnell.com/siemens/5sy8314-7/rcbo-rcd-gfci-afdd-circuit-breakers/dp/3477038)
---

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