3RA2150-4PA35-0NB3

**3RA2150-4PA35-0NB3** 

**Data sheet** 

|||Load feeder fuseless, Direct-on-line starting 400 V AC, Size S2 28 ... 36 A 20 ... 33|
|---|---|---|
|||V AC/DC screw terminal for installation on standard mounting rail (also fulfills type|
|||of coordination 1) Type of coordination 2, Iq = 150 kA 1 NO+1 NC (contactor) with|
|||circuit (integrated)|
||**product brand name**|SIRIUS|
||**product designation**|Direct(on-line)starter|
||**design of theproduct**|for DIN-rail or screw mounting|
||**product type designation**|3RA21|
||**manufacturer's article number**||
|● of the supplied contactor<br>● of the supplied circuit-breakers<br>● of the supplied link module<br>**General technical data**<br>**size of the circuit-breaker**<br>~~—————~~||3RT2035-1NB30<br>3RV2032-4PA10<br>3RA2931-1AA00<br>S2|
||**size of load feeder**|S2|
||**power loss[W] for rated value of the current**||
||● at AC in hot operatingstateperpole|8.9 W|
||● without load current share typical|2 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|
||**degree ofprotection NEMA rating**|other|
||**shock resistance according to IEC 60068-2-27**|6g/ 11 ms|
||mechanical service life(operatingcycles)of contactor typical|10 000 000|
||**type of coordination**|2|
||**reference code according to IEC 81346-2:2019**|Q|
||**Substance Prohibitance(day/month/year)**|03/01/2017|
||**SVHC substance name**|Lead CAS-No. 7439-92-1|
|||Lead monoxide (lead oxide) CAS-No. 1317-36-8|
|||2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-|
|||10-5|
|||Melamine CAS-No. 108-78-1|



|**Net Weight**|2.359 kg|
|---|---|
|**Ambient conditions**<br>~~|~~||
|**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**<br>~~|~~||
|**number ofpoles for main current circuit**|3|
|**design of the switching contact**|electromechanical|
|**adjustable current response value current of the current-**|28 ... 36 A|
|**dependent overload release**||
|**operating voltage**||
|● rated value|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**||
|● at AC-3 at 400 V rated value|36 A|
|● at AC-3e at 400 V rated value|36 A|



Subject to change without notice © Copyright Siemens 

3RA21504PA350NB3 Page 1/3 

5/30/2026 

|**operating power**||
|---|---|
|● at AC-3||
|— at 400 V rated value|18 500 W|
|● at AC-3e||
|— at 400 V rated value|18 500 W|
|**Control circuit/ Control**||
|**type of voltage of the control supply voltage**|AC/DC|
|**control supply voltage at AC**||
|● at 50 Hz rated value|20 ... 33 V|
|● at 60 Hz rated value|20 ... 33 V|
|**control supply voltage at DC rated value**|20 ... 33 V|
|**apparent holding power of magnet coil at AC**|2 VA|
|● at 50 Hz|2 VA|
|● at 60 Hz|2 VA|
|**inductivepower factor with the holding power of the coil**|1|
|**holding power of magnet coil at DC**|1 W|
|**Auxiliary circuit**||
|**product extension auxiliary switch**|Yes|
|**Protective and monitoring functions**||
|**trip class**|CLASS 10|
|**design of the overload release**|thermal(bimetallic)|
|response value current of instantaneous short-circuit trip unit|520 A|
|**UL/CSA ratings**||
|**full-load current(FLA) for 3-phase AC motor**||
|● at 480 V rated value|36 A|
|● at 600 V rated value|36 A|
|**yielded mechanicalperformance[hp]**||
|● for 3-phase AC motor||
|— at 200/208 V rated value|10 hp|
|— at 220/230 V rated value|10 hp|
|— at 460/480 V rated value|25 hp|
|**Short-circuit protection**||
|**product function short circuitprotection**|Yes|
|**design of the short-circuit trip**|magnetic|
|**conditional short-circuit current(Iq)**||
|● at 400 V accordingto IEC 60947-4-1 rated value|150 000 A|
|**Installation/ mounting/ dimensions**||
|**mounting position**|vertical, horizontal|
|**fastening method**|screw and snap-on mountingto two 35 mm DIN rails|
|**height**|274 mm|
|**width**|55 mm|
|**depth**|150 mm|
|**required spacing**||
|● forgroundedparts||
|— forwards|32 mm|
|— backwards|0 mm|
|— upwards|50 mm|
|— at the side|10 mm|
|— downwards|10 mm|
|● for liveparts||
|— forwards|32 mm|
|— backwards|0 mm|
|— upwards|50 mm|
|— downwards|10 mm|
|— at the side|10 mm|
|**Connections/ Terminals**||
|**type of electrical connection**||
|● for main current circuit|screw-type terminals|



Subject to change without notice © Copyright Siemens 

3RA21504PA350NB3 Page 2/3 

5/30/2026 

● for auxiliary and control circuit screw-type terminals ~~ee~~ **Safety related data** product function suitable for safety function Yes ~~OOOO~~ Electrical Safety **touch protection on the front according to IEC 60529** finger-safe, for vertical contact from the front ~~ee~~ **Communication/ Protocol protocol is supported** ● PROFINET IO protocol No ~~oo~~ ● PROFIsafe protocol No protocol is supported AS-Interface protocol No **Approvals Certificates For use in hazardEnvironment General Product Approval ous locations** Environmental Confirmations ~~—~~ © mM <¢ HK @ **Test Certificates Maritime application** - - Special Test Certific Type Test Certific ate ates/Test Report ~~===~~ @ “ **Maritime application other** ® ~~es~~ Confirmation Confirmation **Railway** - 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/ic10 **Industry Mall (Online ordering system)** https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RA2150-4PA35-0NB3 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3RA2150-4PA35-0NB3 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RA2150-4PA35-0NB3&lang=en **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RA2150-4PA35-0NB3 **Characteristic curves** https://curves.simaris.siemens.com/curves/<mmp_prod_noCOMP="HAUPT"></mmp_prod__no> 

**last modified:** 

4/24/2026 

Subject to change without notice © Copyright Siemens 

3RA21504PA350NB3 Page 3/3 

5/30/2026