# Thermal Magnetic Circuit Breaker, MCB, 5SJ4, 3P, 10 kA, 277 V, 0.5 A

![Product image](https://novapart.co/image/farnell:3479669/)

**URL**: https://novapart.co/products/5SJ4305-7HG42/thermal-magnetic-circuit-breaker-mcb-5sj4-3p-10-ka
**SKU**: 5SJ4305-7HG42
**Manufacturer**: SIEMENS
**Category**: Circuit Protection || Circuit Breakers || Thermal Magnetic Circuit Breakers
**Price**: €251.0600
**Stock**: 10+

## Specifications

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

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3479669/)

**5SJ4305-7HG42** 

**Data sheet** 

miniature circuit breaker 10 kA, 3-pole, C, 0.5 A according to UL 489-480Y/277V 

|ea<br>Figure similar|miniature circuit breaker 10 kA, 3-pole, C, 0.5 A according to UL 489-480Y/277V<br>|
|---|---|
|**Model**<br>~~|~~||
|**product brand name**<br>~~|~~|SENTRON<br>~~|~~|
|**product designation**|Miniature circuit breakers|
|**design of the product**|Miniature circuit-breaker 5SJ4|
|**General technical data**<br>~~|~~||
|**number ofpoles**<br>~~|~~|3<br>~~|~~|
|**design ofpole**|3P|
|**tripping characteristic class**|C|
|**mechanical service life(operating cycles) typical**|10 000|
|**installation environment regarding EMC**|Suitable for environment B(immunityto interference not applicable)|
|**reference code according to DIN 40719 extended according**<br>**to IEC 204-2 according to IEC 750**|F|
|**overvoltage category**|3|
|**degree of pollution**|3|
|**Voltage**<br>~~ee~~||
|insulation voltage(Ui)at AC rated value<br>~~ee~~|440 V<br>~~ee~~|
|||
|**● operational current**||
|— at 30 °C rated value|1 A|
|**— at 40 °C rated value**|0.5 A|
|— at 50 °C rated value|0.46 A|
|— at 55 °C rated value|0.44 A|
|— at 60 °C rated value|0.42 A|
|**● operational current at AC rated value**|0.5 A|
|**Supply voltage**<br>~~|~~||
|**supply voltage**<br>~~|~~|~~|~~|
|● at AC|400 V|
|● at DC rated value|60 V|
|**value range of the supply voltage frequency**|50/60 Hz|
|**operating voltage**||
|● at AC according to UL 489 and CSA C22.2 No. 5-02<br>maximum|277 V|
|● at DC rated value maximum|60 V|
|● at DC 1-channel according to UL 489 and CSA C22.2 No.<br>5-02 maximum|60 V|
|● at DC 2-channel according to UL 489 and CSA C22.2 No.<br>5-02 maximum|125 V|
|supplyvoltage frequencyrated value<br>~~OO~~|50 Hz|
|**Protection class**<br>~~OO~~<br>~~—CSC“‘C_CONCSC:C‘iésC,~~||



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|**protection class IP**|IP 0 in the handle range|
|---|---|
|**Breaking Capacity**||
|**switching capacity current**||
|● accordingto EN 60898 rated value|10 kA|
|● accordingto IEC 60947-2 rated value|15 kA|
|**Dissipation**||
|power loss [W] for rated value of the current at AC in hot<br>operatingstate per pole|1.2 W|
|**Main circuit**||
|**type of voltage supply at AC according to UL 489 and CSA**<br>**C22.2 No. 5-02**|480/277|
|**suitability for operation**|Infrastructure / Industry|
|**Product details**||
|**product feature touchprotection**|Yes|
|**product component**||
|**● tunnel terminals top**|No|
|**● tunnel terminals bottom**|No|
|● combined terminal top|Yes|
|● combined terminal bottom|Yes|
|● neutral conductor switching|No|
|**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**|7,5|
|**reference value setting current(Ii) for I-tripping**|x In|
|product function note|Terminal tighteningtorque for Cu, 60/75°C; 3.5Nm/31lb.in|
|**Short circuit**||
|short-circuit current breaking capacity (Icn) at AC according to<br>UL 1077 and CSA C22.2 No.235|10 kA|
|**Connections**||
|**connectable conductor cross-section finely stranded with**<br>**core endprocessing**||
|● minimum|0.75 mm²|
|● maximum|25 mm²|
|tighteningtorque with screw-type terminals maximum|3.5 N·m|
|**position of power supply cord**|Any|
|**Mechanical Design**||
|**height**|121 mm|
|**width**|54 mm|
|**depth**|70 mm|
|**installation depth**|70 mm|
|**number of modular width units**|3|
|**fastening method**|on standard mountingrail|
|**mounting position**|any|
|**Net Weight**|512g|
|**Environmental conditions**||
|**standard**|IEC / EN 60947-2 / UL 489|
|**vibration resistance**|50 m/s² at 25 to 150Hz and 60m/s² at 35Hz(4sec)|
|**vibration resistance according to IEC 60068-2-6**|±1 mm at 5 to 25 Hz; 50 m/s² at 25 to 150 Hz|
|**ambient temperature during operation**||
|● minimum|-25 °C|
|● maximum|55 °C|
|**ambient temperature during operation**|max. 95% humidity|
|**ambient temperature during storage**||
|● minimum|-40 °C|
|● maximum|75 °C|
|**Approvals Certificates**||



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**Environment General Product Approval** Environmental ConEnvironmental Confirmations firmations ~~Oe~~ © ® **General Product Approval Test Certificates** Confirmation Special Test Certificate FAL ~~~~~ ce BK ~~=~~ **other** Confirmation ~~—_~~ QC PASS ~~e~~ **Further information** ~~s~~ **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=5SJ4305-7HG42 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/5SJ4305-7HG42 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)** https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5SJ4305-7HG42 **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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**last modified:** 1/11/2026 

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- [Supplier page](https://es.farnell.com/siemens/5sj4305-7hg42/thermal-magnetic-circuit-breakers/dp/3479669)
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