# Fault Signal Contact, SPST-NO/NC, 5SL, 5SY, 5SP Series MCB, 5SU1 Series RCBO & FI 5SV Series MCCB
**URL**: https://novapart.co/products/5ST3020-2/fault-signal-contact-spst-no-nc-5sl-5sy-5sp-series
**SKU**: 5ST3020-2
**Manufacturer**: SIEMENS
**Category**: Circuit Protection || Circuit Breakers || Circuit Breaker Accessories
**Price**: €38.4500
**Stock**: 10+
## Specifications
| Parameter | Value |
|---|---|
| Product Range | SENTRON Series |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3556511/)
**5ST3020-2**
**Data sheet**
fault signal contact with test button 1 NO + 1 NC for miniature circuit breakers 5SL, 5SY, 5SP RCBO 5SU1, RCCB 5SV (required for 5SU1 handle coupler 5ST3805-1)
||fault signal contact with test button 1 NO + 1 NC for miniature circuit breakers 5SL,
5SY, 5SP RCBO 5SU1, RCCB 5SV (required for 5SU1 handle coupler 5ST3805-1)|
|---|---|
|**Model**
~~|~~||
|**product brand name**
~~|~~|SENTRON
~~|~~|
|**product designation**|Fault signal contact|
|**design of theproduct**
~~ee~~|Mountable
~~ee~~|
|**design of theproduct factory mounted**
~~ee~~|No
~~ee~~|
|**electrical endurance(operating cycles) typical**
~~ee~~|10 000
~~ee~~|
|**Voltage**||
|insulation voltage rated value|440 V|
|**Current**
~~|~~||
|**operational current at DC rated value**
~~|~~|0.05 A
~~|~~|
|**Supply voltage**
~~|~~||
|**operating voltage**
~~|~~|~~|~~|
|● at AC rated value minimum|24 V|
|● at DC rated value minimum
~~a~~|24 V
~~a~~|
|**protection class IP**
~~a~~|IP20
~~a~~|
|**Control current**||
|type of voltage of control voltage|AC/DC|
|**Product details**
~~|~~||
|**product component**
~~|~~|~~|~~|
|**● fault signal contact**|Yes|
|● auxiliaryswitch|No|
|**number of fault signal contacts**|0|
|**number of NC contacts**|1|
|**number of NO contacts**|1|
|**number of CO contacts**
~~Oe~~|0
~~Oe~~|
|**product extension can be mounted**
~~Oe~~|Universal
~~Oe~~|
|**product extension**
~~Oe~~|Fault signal contact
~~Oe~~|
|**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**||
|● maximum|1 N·m|
|**Mechanical Design**
~~|~~||
|**height**
~~|~~|90 mm
~~|~~|
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6/3/2026
|**width**|9 mm|9 mm||||
|---|---|---|---|---|---|
|**depth**|70 mm|||||
|**number of modular width units**
1
~~SC~~||||||
|**Net Weight**|71g|||||
|**Environmental conditions**||||||
|**standard**|IEC/EN60947-5-1; IEC/EN62019; GB14048.5|||||
|**ambient temperature during operation**
● minimum
● maximum
ambient temperature duringstorage minimum
~~CS~~|-25 °C
55 °C
-40 °C|||||
|**Approvals Certificates**||||||
|**Environment**|||**General Product Approval**|||
|Environmental Con-
firmations
Environmental Con-
firmations
~~—_~~
~~—_~~
EPD||Miscellaneous
P~~D~~|||EAL|
|**General Product Approval**||**other**|||**Railway**|
|Confirmation
~~—~~
Ce
es||||Confirmation|Special Test Certific-
ate|
|**Further information**
~~ee~~||||||
|**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=5ST3020-2||||||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**||||||
|https://support.industry.siemens.com/cs/ww/en/ps/5ST3020-2||||||
|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...)**||||||
|https://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5ST3020-2||||||
|**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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## Links
- [View this product on Novapart](https://novapart.co/products/5ST3020-2/fault-signal-contact-spst-no-nc-5sl-5sy-5sp-series)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/siemens/5st3020-2/circuit-breaker-accessories/dp/3556511)
---
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