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3RA2120-4BA26-0BB4
Load Feeder, Fuseless, Direct On Line, 3RA2 Series, Three Phase, 13 A to 20 A, 24 VDC, Screw
⚠️ 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: Motor Starters
- SVHC: To Be Advised
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 274.05 € |
| Current stock | 10+ |
| Lead time | 30 days |
**3RA2120-4BA26-0BB4** **Data sheet** ||Load feeder fuseless, Direct-on-line starting 400 V AC, Size S0 13...20 A 24 V DC<br>screw terminal for installation on standard mounting rail Type of coordination 1, Iq<br>= 150 kA 1 NO+1 NC (contactor)| |---|---| |**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>~~ae~~|3RT2026-1BB40<br>~~ae~~| |● of the supplied circuit-breakers<br>~~ae~~|3RV2021-4BA10<br>~~ae~~| |● of the supplied link module<br>~~ae~~|3RA2921-1BA00<br>~~ae~~| |**General technical data**<br>~~ae~~|| |**size of the circuit-breaker**<br>~~ae~~|S0<br>~~ae~~| |**size of load feeder**|S0| |**power loss[W] for rated value of the current**|| |● at AC in hot operatingstateperpole|5.4 W| |● without load current share typical|5.9 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**|1| |**reference code according to IEC 81346-2:2019**|Q| |**Substance Prohibitance(day/month/year)**|10/01/2009| |**SVHC substance name**|Lead CAS-No. 7439-92-1| |**Net Weight**|1.023 kg| |**Ambient conditions**<br>~~|~~|| |**ambient temperature**<br>~~|~~|~~|~~| |● 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**<br>~~|~~|3<br>~~|~~| |**design of the switching contact**|electromechanical| |**adjustable current response value current of the current-**<br>**dependent overload release**|13 ... 20 A| |**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|20 A| |● at AC-3e at 400 V rated value|20 A| |**operating power**|| |● at AC-3|| |— at 400 V rated value|7 500 W| |● at AC-3e|| Subject to change without notice © Copyright Siemens 3RA21204BA260BB4 Page 1/5 5/31/2026 |— at 400 V rated value|7 500 W| |---|---| |**Control circuit/ Control**|| |**type of voltage of the control supply voltage**|DC| |**control supply voltage at DC rated value**|24 V| |**holding power of magnet coil at DC**|5.9 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|260 A| |**UL/CSA ratings**|| |**full-load current(FLA) for 3-phase AC motor**|| |● at 480 V rated value|20 A| |● at 600 V rated value|20 A| |**yielded mechanicalperformance[hp]**|| |● for single-phase AC motor|| |— at 110/120 V rated value|1.5 hp| |— at 230 V rated value|3 hp| |● for 3-phase AC motor|| |— at 200/208 V rated value|5 hp| |— at 220/230 V rated value|7.5 hp| |— at 460/480 V rated value|15 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| |**fastening method**|screw and snap-on mountingonto 35 mm DIN rail| |**height**|193 mm| |**width**|45 mm| |**depth**|107 mm| |**required spacing**|| |● forgroundedparts|| |— forwards|20 mm| |— backwards|0 mm| |— upwards|50 mm| |— at the side|20 mm| |— downwards|10 mm| |● for liveparts|| |— forwards|20 mm| |— backwards|0 mm| |— upwards|50 mm| |— downwards|10 mm| |— at the side|20 mm| |**Connections/ Terminals**|| |**type of electrical connection**|| |● for main current circuit|screw-type terminals| |● for auxiliaryand control circuit|screw-type terminals| |**Safety related data**|| |product function suitable for safetyfunction|Yes| |Electrical Safety|| |**touch protection on the front according to IEC 60529**|finger-safe, for vertical contact from the front| |**Communication/ Protocol**|| |**protocol is supported**|| |● PROFINET IO protocol|No| Subject to change without notice © Copyright Siemens 3RA21204BA260BB4 Page 2/5 5/31/2026 **==> picture [510 x 568] intentionally omitted <==** **----- Start of picture text -----**<br> ● PROFIsafe protocol No<br>protocol is supported AS-Interface protocol No<br>ee Approvals Certificates<br>For use in hazard-<br>Environment General Product Approval ous locations<br>Environmental Con-<br>firmations<br>—— ~ W& UK<br>FAL S€§ «EG<br>Test Certificates Maritime application<br>- -<br>Type Test Certific Special Test Certific<br>ates/Test Report ate<br>— - — @® © us<br>Maritime application other<br>es Confirmation Confirmation<br>Railway Dangerous goods<br>-<br>Special Test Certific Transport Information<br>ate<br>e Further information e<br>Information on the packaging<br>https://support.industry.siemens.com/cs/ww/en/view/109813875<br>Information for data generation and storage<br>https://support.industry.siemens.com/cs/ww/en/view/109995012<br>Information- and Downloadcenter (Catalogs, Brochures,…)<br>https://www.siemens.com/ic10<br>Industry Mall (Online ordering system)<br>https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RA2120-4BA26-0BB4<br>Service&Support (Manuals, Certificates, Characteristics, FAQs,...)<br>https://support.industry.siemens.com/cs/ww/en/ps/3RA2120-4BA26-0BB4<br>Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)<br>https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RA2120-4BA26-0BB4&lang=en<br>Cax online generator<br>https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RA2120-4BA26-0BB4<br>Characteristic curves<br>https://curves.simaris.siemens.com/curves/<mmp_prod_noCOMP="HAUPT"></mmp_prod__no><br>**----- End of picture text -----**<br> Subject to change without notice © Copyright Siemens 3RA21204BA260BB4 Page 3/5 5/31/2026 **==> picture [511 x 718] intentionally omitted <==** Subject to change without notice © Copyright Siemens 3RA21204BA260BB4 Page 4/5 5/31/2026 **==> picture [362 x 368] intentionally omitted <==** **----- Start of picture text -----**<br> -Q<br>F<br>-Q1<br>ll<br>I> I> I><br>-Q11<br>last modified: 4/24/2026<br>NO NC<br>A1+ 1/L1 3/L2 5/L3 13 21<br>A2- T1/ T2/ T3/ ON CN<br>2 4 6<br>14 22<br>**----- End of picture text -----**<br> Subject to change without notice © Copyright Siemens 3RA21204BA260BB4 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Updated at April 28, 2026
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