# Under Voltage Release, for 3RV2 Series Circuit Breaker, with 2 NO Auxiliary Contact
**URL**: https://novapart.co/products/3RV2922-1CB0/under-voltage-release-for-3rv2-series-circuit
**SKU**: 3RV2922-1CB0
**Manufacturer**: SIEMENS
**Category**: Circuit Protection || Circuit Breakers || Circuit Breaker Accessories
**Price**: €48.6500
**Stock**: 10+
## Specifications
| Parameter | Value |
|---|---|
| Product Range | SIRIUS 3RV2 Series |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3473980/)
**3RV2922-1CB0**
**Data sheet**
undervoltage release 24 V AC, 50 Hz/60 Hz with leading auxiliary contact 2 NO with screw terminal for 3RV2 motor starter protector/circuit breaker
||undervoltage release 24 V AC, 50 Hz/60 Hz with leading auxiliary contact 2 NO
with screw terminal for 3RV2 motor starter protector/circuit breaker|
|---|---|
|**product brand name**|SIRIUS|
|**product category**|Auxiliaryrelease|
|**product designation**|undervoltage release|
|**design of theproduct**|with 2 auxiliarycontacts|
|**product type designation**|3RV29|
|**suitability for use**|motor circuit breaker|
|**General technical data**
~~|~~||
|**certificate of suitability**
~~|~~|CE / UL / CSA
~~|~~|
|**size of the circuit-breaker**|S00, S0, S2, S3|
|**closing activepower at AC maximum**|13 W|
|**activepower at AC in operation maximum**|2.4 W|
|**apparentpower at AC in operation maximum**|7.2 VA|
|**insulation voltage**||
|**● rated value**|690 V|
|● with degree ofpollution 3 at AC rated value|690 V|
|**degree ofpollution**|3|
|protection class IP on the front accordingto IEC 60529|IP20|
|break time maximum|20 ms|
|**reference code according to DIN 40719 extended according**
**to IEC 204-2 according to IEC 750**|F|
|**reference code according to EN 61346-2**|F|
|**Substance Prohibitance(day/month/year)**|07/01/2006|
|**Net Weight**|0.156 kg|
|**type of voltage of the control supply voltage**|AC|
|**control supply voltage 1 at AC**||
|● at 50 Hz rated value|24 V|
|**control supply voltage frequency 1**|50 Hz|
|number of NC contacts for auxiliary contacts instantaneous
contact|0|
|number of NO contacts for auxiliarycontacts||
|● instantaneous contact|0|
|● leadingcontact|2|
|number of CO contacts of auxiliary contacts instantaneous
contact|0|
|**Ambient conditions**
~~|~~||
|**ambient temperature**
~~|~~|~~|~~|
|● duringoperation|-20 ... +60 °C|
|● duringstorage|-50 ... +80 °C|
|Electrical Safety||
|**protection class IP on the front according to IEC 60529**|IP20|
3RV29221CB0 Page 1/2
Subject to change without notice © Copyright Siemens
5/30/2026
|**touch protection on the front according to IEC 60529**||finger-safe, for vertical contact from the front|finger-safe, for vertical contact from the front|finger-safe, for vertical contact from the front|||
|---|---|---|---|---|---|---|
|**Short-circuit protection**|||||||
|**design of short-circuit protection**||fuse|||||
|**Installation/ mounting/ dimensions**
~~re~~|||||||
|**fastening method**||snap-on mountin|-on mounting||||
|**height**||90 mm|||||
|**width**
~~re~~||19 mm|||||
|**depth**||68 mm|||||
|**Connections/ Terminals**|||||||
|type of electrical connection for auxiliaryand control circuit||screw-type terminals|||||
|**Approvals Certificates**
~~a~~|||||||
|**Environment**
**General Product Approval**|||||**Test Certificates**||
|Environmental Con-|||||Special Test Certific-||
|firmations||||||ate|
||||||||
|**Test Certificates**
**Maritime application**|||||||
|Type Test Certific-|||||||
|ates/Test Report|||||||
|renitas!|||||||
|**Maritime application**
**other**|||||**Railway**||
|Miscellaneous
Confirmation
Miscellaneous
Special Test Certific-
ate
~~2~~
i
~~ne~~|||||||
|**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/ic10|||||||
|**Industry Mall (Online ordering system)**|||||||
|https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RV2922-1CB0|||||||
|**Cax online generator**|||||||
|https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RV2922-1CB0|||||||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**|||||||
|https://support.industry.siemens.com/cs/ww/en/ps/3RV2922-1CB0|||||||
|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)**|||||||
|https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RV2922-1CB0&lang=en|||||||
|**last modified:**||4/2/2025|||||
3RV29221CB0 Page 2/2
Subject to change without notice © Copyright Siemens
5/30/2026
## Links
- [View this product on Novapart](https://novapart.co/products/3RV2922-1CB0/under-voltage-release-for-3rv2-series-circuit)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/siemens/3rv2922-1cb0/circuit-breaker-accessories/dp/3473980)
---
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