# Thermal Magnetic Circuit Breaker, MPCB, 3RV2, 3P, 55 kA, 400 V, 28 A

![Product image](https://novapart.co/image/farnell:3447055/)

**URL**: https://novapart.co/products/3RV2021-4NA20/thermal-magnetic-circuit-breaker-mpcb-3rv2-3p-55
**SKU**: 3RV2021-4NA20
**Manufacturer**: SIEMENS
**Category**: Circuit Protection || Circuit Breakers || Thermal Magnetic Circuit Breakers
**Price**: €147.9000
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Product Range | SIRIUS 3RV2 Series |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3447055/)

**3RV2021-4NA20** 

**Data sheet** 

Circuit breaker size S0 for motor protection, CLASS 10 A-release 23...28 A N- release 364 A Spring-type terminal Standard switching capacity 

|**product brand name**|SIRIUS|
|---|---|
|**product designation**|Circuit breaker|
|**design of theproduct**|For motorprotection|
|**product type designation**|3RV2|
|**General technical data**||
|**Product equipment of circuit breaker for motor protection**|Yes|
|**complete unit withprotection device**||
|**size of the circuit-breaker**|S0|
|**size of contactor can be combined company-specific**|S00, S0|
|product function disconnector functionality|Yes|
|product extension auxiliaryswitch|Yes|
|**power loss[W] for rated value of the current**||
|● at AC in hot operatingstate|13.25 W|
|● at AC in hot operatingstateperpole|4.4 W|
|**type of calculation ofpower loss current-dependent**|quadratic|
|insulation voltage with degree ofpollution 3 at AC rated value|690 V|
|**surge voltage resistance rated value**|6 kV|
|**maximumpermissible voltage forprotective separation**||
|● in networks with ungrounded star point between main and|400 V|
|auxiliarycircuit||
|● in networks with grounded star point between main and|400 V|
|auxiliarycircuit||
|**protection class IP**||
|● on the front accordingto IEC 60529|IP20|
|● on the front|IP20|
|● of the terminal|IP20|
|**shock resistance according to IEC 60068-2-27**|25g/ 11 ms|
|**mechanical service life(operating cycles)**||
|● of the main contacts typical|100 000|
|● of auxiliarycontacts typical|100 000|
|electrical endurance(operatingcycles)typical|100 000|
|**reference code according to IEC 81346-2**|Q|
|**continuous current rated value**|28 A|
|**Substance Prohibitance(day/month/year)**|10/01/2009|
|**Net Weight**|433g|
|**Ambient conditions**||
|installation altitude at height above sea level maximum|2 000 m|



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|**ambient temperature**||
|---|---|
|● duringoperation|-20 ... +60 °C|
|● duringstorage|-50 ... +80 °C|
|● duringtransport|-50 ... +80 °C|
|**temperature compensation**|-20 ... +60 °C|
|relative humidityduringoperation|10 ... 95 %|
|**Main circuit**||
|**number ofpoles for main current circuit**|3|
|**adjustable current response value current of the current-**<br>**dependent overload release**|23 ... 28 A|
|**type of voltage for main current circuit**|AC|
|**operating voltage**||
|● rated value|690 V|
|● rated value|20 ... 690 V|
|● at AC-3 rated value maximum|690 V|
|● at AC-3e rated value maximum|690 V|
|**operating frequency rated value**|50 ... 60 Hz|
|**operational current rated value**|28 A|
|**operational current**||
|● at AC-3 at 400 V rated value|28 A|
|● at AC-3e at 400 V rated value|28 A|
|**operating power**||
|● at AC-3||
|— at 230 V rated value|7.5 kW|
|— at 400 V rated value|15 kW|
|— at 500 V rated value|18.5 kW|
|— at 690 V rated value|22 kW|
|● at AC-3e||
|— at 230 V rated value|7.5 kW|
|— at 400 V rated value|15 kW|
|— at 500 V rated value|18.5 kW|
|— at 690 V rated value|22 kW|
|**operating frequency**||
|● at AC-3 maximum|15 1/h|
|● at AC-3e maximum|15 1/h|
|**Auxiliary circuit**||
|**type of voltage for auxiliary and control circuit**|AC/DC|
|**number of NC contacts for auxiliary contacts**|0|
|**number of NO contacts for auxiliary contacts**|0|
|number of CO contacts for auxiliarycontacts|0|
|**Protective and monitoring functions**||
|**product function**||
|●ground fault detection|No|
|●phase failure detection|Yes|
|**trip class**|CLASS 10|
|**design of the overload release**|thermal|
|**protection function thermal overloadprotection(ANSI 49)**|Yes|
|**maximum short-circuit current breaking capacity (Icu)**||
|● at AC at 240 V rated value|100 kA|
|● at AC at 400 V rated value|55 kA|
|● at AC at 500 V rated value|10 kA|
|● at AC at 690 V rated value|4 kA|
|**operating short-circuit current breaking capacity (Ics) at AC**||
|● at 240 V rated value|100 kA|
|● at 400 V rated value|25 kA|
|● at 500 V rated value|5 kA|
|● at 690 V rated value|2 kA|
|response value current of instantaneous short-circuit trip unit|364 A|
|**UL/CSA ratings**||



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||**full-load current(FLA) for 3-phase AC motor**|||
|---|---|---|---|
||● at 480 V rated value|28 A||
||● at 600 V rated value|28 A||
||**yielded mechanicalperformance[hp]**|||
||● for single-phase AC motor|||
||— at 110/120 V rated value|2 hp||
||— at 230 V rated value|5 hp||
||● for 3-phase AC motor|||
||— at 200/208 V rated value|7.5 hp||
||— at 220/230 V rated value|10 hp||
||— at 460/480 V rated value|20 hp||
||**UL File Number(CCN)**|E47705(NLRV, NLRV7), E156943(NKJH, NKJH7)||
||**Short-circuit protection**|||
||**product function short circuitprotection**|Yes||
||**design of the short-circuit trip**|magnetic||
||**design of the fuse link for IT network for short-circuit**<br>**protection of the main circuit**|||
||● at 400 V|gL/gG 63 A||
||● at 500 V|gL/gG 63 A||
||● at 690 V|gL/gG 63 A||
||certificate of suitabilityaccordingto ATEX directive 2014/34/EU|DMT 02 ATEX F 001||
||**type of protection according to ATEX directive 2014/34/EU**|Ex II(2)GD||
||**Installation/ mounting/ dimensions**|||
||**mounting position**|any||
||**fastening method**|screw and snap-on mountingonto 35 mm DIN rail accordingto DIN EN 60715||
||**Mounting method of circuit breaker for Transformer**<br>**protection, Generator protection and system protection**<br>**optional standard bar mounting**|Yes||
||**height**|119 mm||
||**width**|45 mm||
||**depth**|97 mm||
||**required spacing**|||
||● with side-by-side mounting|||
||— forwards|0 mm||
||— backwards|0 mm||
||— upwards|50 mm||
||— downwards|50 mm||
||— at the side|0 mm||
||● forgroundedparts|||
||— forwards|0 mm||
||— backwards|0 mm||
||— upwards|50 mm||
||— at the side|30 mm||
||— downwards|50 mm||
||● for liveparts|||
||— forwards|0 mm||
||— backwards|0 mm||
||— upwards|50 mm||
||— downwards|50 mm||
||— at the side|30 mm||
||● forgroundedparts at 400 V|||
||— downwards|30 mm||
||— upwards|30 mm||
||— at the side|9 mm||
||● for liveparts at 400 V|||
||— downwards|30 mm||
||— upwards|30 mm||
||— at the side|9 mm||
||● forgroundedparts at 500 V|||
||— downwards|30 mm||



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|— upwards|30 mm|
|---|---|
|— at the side|9 mm|
|● for liveparts at 500 V||
|— downwards|30 mm|
|— upwards|30 mm|
|— at the side|9 mm|
|● forgroundedparts at 690 V||
|— downwards|50 mm|
|— upwards|50 mm|
|— backwards|0 mm|
|— at the side|30 mm|
|— forwards|0 mm|
|● for liveparts at 690 V||
|— downwards|50 mm|
|— upwards|50 mm|
|— backwards|0 mm|
|— at the side|30 mm|
|— forwards|0 mm|
|**Connections/ Terminals**||
|**product component removable terminal for auxiliary and**<br>**control circuit**|No|
|**type of electrical connection**||
|● for main current circuit|spring-loaded terminals|
|**arrangement of electrical connectors for main current**<br>**circuit**|Top and bottom|
|**type of connectable conductor cross-sections**||
|● for main contacts||
|— solid or stranded|2x(1 ... 10 mm²)|
|— finelystranded with core endprocessing|2x(1 ... 6 mm²)|
|— finelystranded without core endprocessing|2x(1 ... 6 mm²)|
|● for AWG cables for main contacts|2x(18 ... 8)|
|**connectable conductor cross-section for main contacts**||
|● solid or stranded|1 ... 10 mm²|
|● finelystranded with core endprocessing|1 ... 6 mm²|
|● finelystranded without core endprocessing|1 ... 6 mm²|
|**AWG number as coded connectable conductor cross**<br>**section for main contacts**|18 ... 8|
|**design of screwdriver shaft**|Diameter 3 mm|
|**size of the screwdriver tip**|3,0 x 0,5 mm|
|**Safety related data**||
|product function suitable for safetyfunction|Yes|
|**suitability for use**||
|● safety-related switchingon|No|
|● safety-related switchingOFF|Yes|
|**service life maximum**|10 a|
|**test wear-related service life necessary**|Yes|
|**proportion of dangerous failures**||
|● with low demand rate accordingto SN 31920|40 %|
|● with high demand rate accordingto SN 31920|50 %|
|**B10 value with high demand rate according to SN 31920**|5 000|
|**failure rate [FIT] with low demand rate according to SN**<br>**31920**|50 FIT|
|ISO 13849||
|**device type according to ISO 13849-1**|3|
|**overdimensioning according to ISO 13849-2 necessary**|Yes|
|IEC 61508||
|**safety device type according to IEC 61508-2**|Type A|
|**T1 value**||
|● for proof test interval or service life according to IEC<br>61508|10 a|



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~~Lee~~ Electrical Safety **protection class IP on the front according to IEC 60529** IP20 **touch protection on the front according to IEC 60529** finger-safe, for vertical contact from the front ~~ee~~ **Display** display version for switching status Handle **Approvals Certificates** ~~a~~ Environmental Product Declaration ~~aa~~ ● global warming potential [CO2 eq] / during manufacturing 2.68 kg ● global warming potential [CO2 eq] / during sales 0.143 kg ● global warming potential [CO2 eq] / during operation 72.7 kg ● global warming potential [CO2 eq] / after end of life -0.445 kg ● global warming potential [CO2 eq] / total 75.078 kg **Environment General Product Approval** Environmental Confirmations ~~—_~~ © -. @ ® 

**General Product Approval** 

**For use in hazardous locations Test Certificates Maritime application** - - Special Test Certific Type Test Certific ate ates/Test Report reerrae| **Maritime application other** Confirmation Miscellaneous = 9 ~~8~~ **other Railway** Confirmation Miscellaneous Confirmation Special Test Certificate QC PASS ~~— —~~ eg ~~— 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/ic10 **Industry Mall (Online ordering system)** https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RV2021-4NA20 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3RV2021-4NA20 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RV2021-4NA20&lang=en **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RV2021-4NA20 **Characteristic curves** 

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- [Supplier page](https://es.farnell.com/siemens/3rv2021-4na20/thermal-magnetic-circuit-breaker/dp/3447055)
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