3RA2120-4BH26-0AP0

**3RA2120-4BH26-0AP0** 

**Data sheet** 

Load feeder fuseless, Direct-on-line starting 400 V AC, Size S0 13...20 A 230 V AC Spring-type terminal for 60 mm busbar systems Type of coordination 1, Iq = 150 kA 1 NO+1 NC (contactor) 

||Load feeder fuseless, Direct-on-line starting 400 V AC, Size S0 13...20 A 230 V AC<br>Spring-type terminal for 60 mm busbar systems Type of coordination 1, Iq = 150 kA<br>1 NO+1 NC (contactor)|
|---|---|
|**product brand name**|SIRIUS|
|**product designation**|Direct(on-line)starter|
|**design of theproduct**|for 60 mm busbars|
|**product type designation**|3RA21|
|**manufacturer's article number**||
|● of the supplied contactor|3RT2026-2AP00|
|● of the supplied circuit-breakers<br>~~ae~~|3RV2021-4BA20<br>~~ae~~|
|● of the supplied busbar adapter<br>~~ae~~|8US1251-5NT11<br>~~ae~~|
|● of the supplied link module<br>~~ae~~|3RA2921-2AA00<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|9.8 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**|1.439 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**||



Subject to change without notice © Copyright Siemens 

3RA21204BH260AP0 Page 1/3 

5/31/2026 

||● 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|||
||— at 400 V rated value|7 500 W||
||**Control circuit/ Control**|||
||**type of voltage of the control supply voltage**|AC||
||**control supply voltage at AC**|||
||● at 50 Hz rated value|230 V||
||**apparent holding power of magnet coil at AC**|9.8 VA||
||● at 50 Hz|9.8 VA||
||**inductivepower factor with the holding power of the coil**|0.25||
||● at 50 Hz|0.25||
||**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**|for snappingonto 60 mm busbar systems||
||**height**|260 mm||
||**width**|45 mm||
||**depth**|165 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||



Subject to change without notice © Copyright Siemens 

3RA21204BH260AP0 Page 2/3 

5/31/2026 

|— upwards||50 mm|50 mm|||
|---|---|---|---|---|---|
|— downwards||10 mm||||
|— at the side||20 mm||||
|**Connections/ Terminals**<br>**type of electrical connection**<br>~~a~~||||||
|● for main current circuit||spring-loaded terminals||||
|● for auxiliaryand control circuit||spring-loaded terminals||||
|**Safety related data**<br>~~et~~||||||
|product function suitable for safetyfunction||Yes||||
|Electrical Safety<br>**touch protection on the front according to IEC 60529**<br>finger-safe, for vertical contact from the front<br>~~ee~~||||||
|**Communication/ Protocol**<br>~~ee~~||||||
|**protocol is supported**||||||
|● PROFINET IOprotocol||No||||
|● PROFIsafeprotocol<br>~~re~~||No||||
|protocol is supported AS-Interface protocol||No||||
|**Approvals Certificates**||||||
|**Environment**<br>**General Product Approval**||||||
|Environmental Con-<br>firmations<br>~~—_~~<br>@|||Miscellaneous|HL|CEé|
|**General Product Approval**<br>**EMV**|||**Test Certificates**|**Maritime application**||
|Confirmation<br>UK<br>~~——~~|||Type Test Certific-<br>ates/Test Report<br>~~a~~|||
|**other**<br>**Dangerous goods**||||||
|Miscellaneous<br>Confirmation<br>Transport Information||||||
|**Further information**<br>~~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=3RA2120-4BH26-0AP0||||||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**||||||
|https://support.industry.siemens.com/cs/ww/en/ps/3RA2120-4BH26-0AP0||||||
|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)**||||||
|https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RA2120-4BH26-0AP0&lang=en||||||
|**Cax online generator**||||||
|https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RA2120-4BH26-0AP0||||||
|**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 

3RA21204BH260AP0 Page 3/3 

5/31/2026