3RF2150-2AA26

**3RF2150-2AA26** 

**Data sheet** 

***phase-out type*** semiconductor relay, 1-phase 3RF2 width 22.5 mm, 50 A 48600 V / 110-230 V AC spring-loaded terminal for mounting on available cooling surfaces 

||***phase-out type*** semiconductor relay, 1-phase 3RF2 width 22.5 mm, 50 A 48-<br>600 V / 110-230 V AC spring-loaded terminal for mounting on available cooling<br>surfaces|
|---|---|
|**product brand name**|SIRIUS|
|**product designation**|solid-state relay|
|**design of theproduct**|1-pole|
|**product type designation**|3RF21|
|**General technical data**<br>~~ee~~||
|**product function**<br>~~ee~~|zero-point switching<br>~~ee~~|
|**power loss[V·A] maximum**|66 VA|
|**power loss[W] for rated value of the current**||
|● at AC in hot operatingstate|66 W|
|● at AC in hot operatingstateperpole|66 W|
|● without load current share typical|3.5 W|
|**insulation voltage rated value**|600 V|
|surge voltage resistance of main circuit rated value|6 kV|
|**protection class IP**|IP20|
|protection class IP on the front accordingto IEC 60529|IP20|
|**shock resistance according to IEC 60068-2-27**|15g/ 11 ms|
|**vibration resistance according to IEC 60068-2-6**|2g|
|**reference code according to IEC 81346-2**|Q|
|**Substance Prohibitance(day/month/year)**|05/28/2009|
|**SVHC substance name**|Lead CAS-No. 7439-92-1<br>Lead monoxide (lead oxide) CAS-No. 1317-36-8<br>2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-<br>10-5<br>Melamine CAS-No. 108-78-1|
|**Net Weight**|0.06 kg|
|**Main circuit**<br>~~ee~~||
|**number ofpoles for main current circuit**<br>~~ee~~|1<br>~~ee~~|
|**number of NO contacts for main contacts**|1|
|**number of NC contacts for main contacts**|0|
|**type of voltage of the operating voltage**|AC|
|**operating voltage**||
|● at AC||
|— at 50 Hz rated value|48 ... 600 V|
|— at 60 Hz rated value|48 ... 600 V|
|**operating frequency rated value**|50 ... 60 Hz|
|**relative symmetrical tolerance of the operating frequency**|10 %|
|**operating range relative to the operating voltage at AC**||
|● at 50 Hz|40 ... 660 V|
|● at 60 Hz|40 ... 660 V|
|**operational current rated value maximum**|50 A|



Subject to change without notice © Copyright Siemens 

3RF21502AA26 Page 1/5 

6/4/2026 

|**operational current**||
|---|---|
|● at AC-1 at 400 V rated value|50 A|
|● at AC-51 rated value|20 A|
|● accordingto UL 508 rated value|20 A|
|**ampacity maximum**|50 A|
|**operational current minimum**|500 mA|
|**rate of voltage rise at the thyristor for main contacts**<br>**maximumpermissible**|1 000 V/µs|
|**blocking voltage at the thyristor for main contacts**<br>**maximumpermissible**|1 600 V|
|**reverse current of the thyristor**|10 mA|
|**derating temperature**|40 °C|
|**surge current resistance rated value**|600 A|
|**I2t value maximum**|1 800 A²·s|
|**Control circuit/ Control**||
|**type of voltage of the control supply voltage**|AC|
|**control supply voltage 1 at AC**||
|● at 50 Hz|110 ... 230 V|
|● at 60 Hz|110 ... 230 V|
|**control supply voltage at AC**||
|● at 50 Hz full-scale value for signal<0> recognition|40 V|
|● at 60 Hz full-scale value for signal<0> recognition|40 V|
|● initial value for signal <1> detection|90 V|
|**control supply voltage frequency**||
|**● 1 rated value**|50 Hz|
|**● 2 rated value**|60 Hz|
|**symmetrical line frequency tolerance**|5 Hz|
|**control current at minimum control supply voltage**||
|● at AC|2 mA|
|control current at AC rated value|15 mA|
|**ON-delay time**|40 ms; additionallymax. one half-wave|
|**OFF-delay time**|40 ms; additionallymax. one half-wave|
|**Installation/ mounting/ dimensions**||
|fasteningmethod side-by-side mounting|Yes|
|**fastening method**|screw fixing|
|**design of the thread of the screw for securing the**<br>**equipment**|M4|
|**tightening torque of fixing screw maximum**|1.5 N·m|
|**tightening torque[lbf·in] of fixing screw maximum**|13 lbf·in|
|**height**|85 mm|
|**width**|22.5 mm|
|**depth**|48 mm|
|**Connections/ Terminals**||
|**product component removable terminal for auxiliary and**<br>**control circuit**|Yes|
|**type of electrical connection**||
|● for main current circuit|spring-loaded terminals|
|● for auxiliaryand control circuit|spring-loaded terminals|
|**type of connectable conductor cross-sections**||
|● for main contacts||
|— solid|2x(0.5 ... 2.5 mm²)|
|— finelystranded with core endprocessing|2x(0.5 ... 1.5 mm²)|
|— finelystranded without core endprocessing|2x(0.5 ... 2.5 mm²)|
|● for AWG cables for main contacts|2x(18 ... 14)|
|**connectable conductor cross-section for main contacts**||
|● solid or stranded|0.5 ... 2.5 mm²|
|● finelystranded with core endprocessing|0.5 ... 1.5 mm²|
|● finelystranded without core endprocessing|0.5 ... 2.5 mm²|
|**type of connectable conductor cross-sections**||
|● for auxiliary and control contacts||



Subject to change without notice © Copyright Siemens 

3RF21502AA26 Page 2/5 

6/4/2026 

**==> picture [511 x 416] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||
|---|---|
|— solid|0.5 ... 1.5 mm²|
|— finely stranded with core end processing|0.5 ... 2.5 mm²|
|— finely stranded without core end processing|0.5 ... 2.5 mm²|
|● for AWG cables for auxiliary and control contacts|1x (20 ... 12)|
|AWG number as coded connectable conductor cross|18 ... 14|
|section for main contacts|
|tightening torque|
|● for main contacts with screw-type terminals|2 ... 2.5 N·m|
|stripped length of the cable|
|● for main contacts|10 mm|
|● for auxiliary and control contacts|10 mm|
|ee|UL/CSA ratings|
|operational current according to UL 508 rated value|20 A|
|a|Electrical Safety|
|touch protection on the front according to IEC 60529|finger-safe, for vertical contact from the front|
|a|Ambient conditions|
|installation altitude at height above sea level maximum|1 000 m|
|ambient temperature|
|● during operation|-25 ... +60 °C|
|● during storage|-55 ... +80 °C|
|a|Electromagnetic compatibility|
|conducted interference|
|● due to burst according to IEC 61000-4-4|2 kV / 5 kHz, behavior criterion 2|
|● due to conductor-earth surge according to IEC 61000-4-5|2 kV, behavior criterion 2|
|● due to conductor-conductor surge according to IEC|1 kV, behavior criterion 2|
|61000-4-5|
|● due to high-frequency radiation according to IEC 61000-|140 dBuV in the frequency range 0.15 ... 80 MHz, behavior criterion 1|
|4-6|
|field-based interference according to IEC 61000-4-3|80 MHz ... 1 GHz 10 V/m, behavior criterion 1|
|electrostatic discharge according to IEC 61000-4-2|4 kV contact discharging / 8 kV air discharging, behavior criterion 2|
|conducted HF interference emissions according to|Class A for industrial environment|
|CISPR11|
|ee|
|field-bound HF interference emission according to CISPR11|Class B for the domestic, business and commercial environments|
|Short-circuit protection, design of the fuse link|

**----- End of picture text -----**<br>


manufacturer's article number 

- of gS fuse for semiconductor protection at NH design usable 

- of back-up R fuse link for semiconductor protection at NH design usable 

- of back-up R fuse link for semiconductor protection at cylindrical design 14 x 51 mm usable 

- of back-up R fuse link for semiconductor protection at cylindrical design 22 x 58 mm usable 

3NE1803-0 3NE8017-1 3NC1450 3NC2250 

manufacturer's article number of the gG fuse 

- at NH design usable 

3NA6807-6; These fuses have a smaller rated current than the semiconductor relays 

● at NH design usable note These fuses have a smaller rated current than the semiconductor relays 

**==> picture [510 x 144] intentionally omitted <==**

**----- Start of picture text -----**<br>
||||||
|---|---|---|---|---|
|ee|Approvals Certificates|
|Environment|General Product Approval|
|Environmental Con-|
|——_|firmations|ff|1|UK|
|EMV|Test Certificates|other|
|Type Test Certific-|Special Test Certific-|Confirmation|Miscellaneous|Confirmation|
|ates/Test Report|ate|

**----- End of picture text -----**<br>


Subject to change without notice © Copyright Siemens 

3RF21502AA26 Page 3/5 

6/4/2026 

**other** 

## **Railway** 

- Special Test Certific ate ~~—~~ 

~~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=3RF2150-2AA26 **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RF2150-2AA26 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3RF2150-2AA26 

**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RF2150-2AA26&lang=en ~~OO~~ 47.5 

Subject to change without notice © Copyright Siemens 

3RF21502AA26 Page 4/5 

6/4/2026 

**==> picture [439 x 534] intentionally omitted <==**

**----- Start of picture text -----**<br>
-Q<br>90<br>pot YY 80 | [~~]<br>po 70 ae<br>po 6050 || Ee Rthha0,4 K/W<br>0,55 K/W<br>aa a 40 eeeeee ee | 0,7 K/W0,85 K/W<br>a 30 a ee ee ee 11,2 K/WK/W<br>aa a 20 P|Pt| | |Pye 1,5 K/W2 K/W<br>aa a oe ee 10 Po| — 35 K/WK/W<br>Pea a| | ee ee ee ee po}Pee|er 10 K/W<br>a a a ee 0 aGB| —<br>5 10 15 20 25 30 35 40 45 50 55 60 0 10 20 30 40 50 60<br>Device curren t / Gerätestrom I e (A) —_— Ambien t tempe rature/ Umgebung stempe ratur T a  (°C) _<br>4/4/2026 G<br>1L A1 A2<br>T<br>2<br>(A)<br> (W) I e<br> M<br>P<br> (W)<br> M<br>P<br>/ Modulverlustleistung<br>loss<br>power<br>Module<br>**----- End of picture text -----**<br>


**last modified:** 

Subject to change without notice © Copyright Siemens 

3RF21502AA26 Page 5/5 

6/4/2026