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5ST3012-0HG
Auxiliary Current Switch, DPST-NC, Miniature Circuit Breakers
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: SIEMENS
- Product type: Circuit Breaker Accessories
- Product Range: SENTRON Series
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 25.51 € |
| Current stock | 10+ |
| Lead time | 30 days |
**5ST3012-0HG** **Data sheet** auxiliary switch 2 NC, for miniature circuit breaker according to UL 489 |**Model**|| |---|---| |**product brand name**|SENTRON| |**product designation**|auxiliaryswitches| |**design of theproduct**|Mountable| |**design of theproduct factory mounted**|No| |**electrical endurance(operating cycles) typical**|6 000| |**Voltage**|| |insulation voltage rated value|440 V| |surge voltage resistance rated value|4 kV| |**Current**|| |**operational current at DC rated value**|0.01 A| |**Supply voltage**|| |**supply voltage at DC rated value**|| |● minimum|12 V| |**operating voltage**|| |● rated value|480 V| |● at AC rated value minimum|12 V| |● at DC rated value minimum|12 V| |**protection class IP**|IP20| |**Control current**|| |type of voltage of control voltage|AC/DC| |**Product details**|| |**product component**|| |● auxiliaryswitch|Yes| |**number of fault signal contacts**|0| |**number of NC contacts**|2| |**number of NO contacts**|0| |**number of CO contacts**|0| |**product extension can be mounted**|Circuit breaker| |**product extension**|auxiliaryswitch| |**Connections**|| |**connectable conductor cross-section**|| |● minimum|0.5 mm²| |● maximum|2.5 mm²| |**AWG number as coded connectable conductor cross**|| |**section**|| |● minimum|24| |● maximum|12| |**tightening torque with screw-type terminals**|| 5ST30120HG Page 1/5 Subject to change without notice © Copyright Siemens 6/2/2026 ● maximum 0.5 N·m ~~a~~ **Mechanical Design height** 110 mm **width** 9 mm **depth** 70 mm **number of modular width units** 1 **Net Weight** 80 g ~~a~~ **Environmental conditions standard** IEC/EN60947-5-1; IEC/EN62019; UL489 ~~a~~ **Approvals Certificates Environment General Product Approval** Environmental ConEnvironmental Confirmations firmations ~~_ ——_~~ EPD EPD O)us **General Product Approval** ~~——~~ Miscellaneous ~~—~~ Confirmation UK EAL Cf EA **Maritime application other** Confirmation pe ~~_ a~~ **Further information 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=5ST3012-0HG **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/5ST3012-0HG **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)** https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5ST3012-0HG **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> 5ST30120HG Page 2/5 Subject to change without notice © Copyright Siemens 6/2/2026 **==> picture [511 x 730] intentionally omitted <==** **----- Start of picture text -----**<br> 13 6,2 69,5<br>-K<br>108,8<br>11 21<br>12 22<br>**----- End of picture text -----**<br> 5ST30120HG Page 3/5 Subject to change without notice © Copyright Siemens 6/2/2026 **==> picture [456 x 340] intentionally omitted <==** **----- Start of picture text -----**<br> 11 12<br>21 22<br>last modified: 5/5/2026 G<br>**----- End of picture text -----**<br> 5ST30120HG Page 4/5 Subject to change without notice © Copyright Siemens 6/2/2026 5ST30120HG Page 5/5 Subject to change without notice © Copyright Siemens 6/2/2026
Updated at June 7, 2026
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