# Soft Starter, 3RW Series, Three Phase, 72 A, 200 V to 480 V, 37 kW at 400 V, Screw

![Product image](https://novapart.co/image/farnell:3448665/)

**URL**: https://novapart.co/products/3RW4038-1BB14/soft-starter-3rw-series-three-phase-72-a-200-v-to
**SKU**: 3RW4038-1BB14
**Manufacturer**: SIEMENS
**Category**: Automation & Process Control || Motors & Motor Controls || Motor Starters
**Price**: €856.4800
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Svhc | To Be Advised |
| No. Of Poles | 3 Pole |
| Power Rating | 37kW |
| No. Of Phases | Three Phase |
| Product Range | SIRIUS 3RW40 |
| Current Rating | 72A |
| Ip / Nema Rating | IP20 |
| Motor Starter Type | Soft Starter |
| Supply Voltage Max | 480VAC |
| Supply Voltage Min | 200VAC |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3448665/)

**3RW4038-1BB14** 

**Data sheet** 

SIRIUS soft starter S2 72 A, 37 kW/400 V, 40 °C 200-480 V AC, 110-230 V AC/DC Screw terminals 

## **General technical data** 

|**product brand name**|SIRIUS|
|---|---|
|**product designation**|Soft starter|
|**product feature**||
|● integrated bypass contact system|Yes|
|● thyristors|Yes|
|**product function**||
|● intrinsic deviceprotection|Yes|
|● motor overloadprotection|Yes|
|● evaluation of thermistor motorprotection|No|
|● external reset|Yes|
|● adjustable current limitation|Yes|
|● inside-delta circuit|No|
|**product component motor brake output**|No|
|**insulation voltage rated value**|600 V|
|**degree ofpollution**|3, acc. to IEC 60947-4-2|
|**blocking voltage of the thyristor maximum**|1 600 V|
|**reference code according to EN 61346-2**|Q|
|**reference code according to DIN 40719 extended according**|G|
|**to IEC 204-2 according to IEC 750**||
|**Power Electronics**||
|**operational current**||
|● at 40 °C rated value|72 A|
|● at 50 °C rated value|62 A|
|● at 60 °C rated value|60 A|
|**yielded mechanicalperformance for 3-phase motors**||
|● at 230 V||
|— at standard circuit at 40 °C rated value|22 kW|
|● at 400 V||
|— at standard circuit at 40 °C rated value|37 kW|
|**yielded mechanical performance [hp] for 3-phase AC motor**|20 hp|
|**at 200/208 V at standard circuit at 50 °C rated value**||
|**operating frequency rated value**|50 ... 60 Hz|
|**relative negative tolerance of the operating frequency**|-10 %|
|**relativepositive tolerance of the operating frequency**|10 %|
|**operating voltage at standard circuit rated value**|200 ... 480 V|
|**relative negative tolerance of the operating voltage at**|-15 %|



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|**standard circuit**||
|---|---|
|**relative positive tolerance of the operating voltage at**<br>**standard circuit**|10 %|
|**minimum load[%]**|20 %|
|**adjustable motor current for motor overload protection**<br>**minimum rated value**|35 A|
|**continuous operating current[% of Ie] at 40 °C**|115 %|
|**power loss [W] at operational current at 40 °C during**<br>**operation typical**|15 W|
|**Control circuit/ Control**||
|**type of voltage of the control supply voltage**|AC/DC|
|**control supply voltage frequency 1 rated value**|50 Hz|
|**control supply voltage frequency 2 rated value**|60 Hz|
|**relative negative tolerance of the control supply voltage**<br>**frequency**|-10 %|
|**relative positive tolerance of the control supply voltage**<br>**frequency**|10 %|
|**control supply voltage 1 at AC at 50 Hz**|110 ... 230 V|
|**control supply voltage 1 at AC at 60 Hz**|110 ... 230 V|
|**relative negative tolerance of the control supply voltage at**<br>**AC at 50 Hz**|-15 %|
|**relative positive tolerance of the control supply voltage at**<br>**AC at 50 Hz**|10 %|
|**relative negative tolerance of the control supply voltage at**<br>**AC at 60 Hz**|-15 %|
|**relative positive tolerance of the control supply voltage at**<br>**AC at 60 Hz**|10 %|
|**control supply voltage 1 at DC**|110 ... 230 V|
|**relative negative tolerance of the control supply voltage at**<br>**DC**|-15 %|
|**relative positive tolerance of the control supply voltage at**<br>**DC**|10 %|
|**display version for fault signal**|red|
|**Mechanical data**||
|**size of engine control device**|S2|
|**width**|55 mm|
|**height**|160 mm|
|**depth**|170 mm|
|**fastening method**|screw and snap-on mounting|
|**mounting position**|With additional fan: With vertical mounting surface +/-90° rotatable, with vertical<br>mounting surface +/- 22.5° tiltable to the front and back Without additional fan:<br>With vertical mounting surface +/-10° rotatable, with vertical mounting surface<br>+/- 10° t|
|**required spacing with side-by-side mounting**||
|● upwards|60 mm|
|● at the side|30 mm|
|● downwards|40 mm|
|**wire length maximum**|300 m|
|**number of poles for main current circuit**|3|
|**Connections/ Terminals**||
|**type of electrical connection**||
|● for main current circuit|screw-type terminals|
|● for auxiliaryand control circuit|screw-type terminals|
|**number of NC contacts for auxiliary contacts**|0|
|**number of NO contacts for auxiliary contacts**|2|
|**number of CO contacts for auxiliary contacts**|1|
|**type of connectable conductor cross-sections for main**<br>**contacts for box terminal using the front clamping point**||
|● solid|2x(1.5 ... 16 mm²)|
|● finelystranded with core endprocessing|0.75 ... 25 mm²|
|● stranded|0.75 ... 35 mm²|
|**type of connectable conductor cross-sections for main**<br>**contacts for box terminal using the back clamping point**||



Subject to change without notice © Copyright Siemens 

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|● solid|2x(1.5 ... 16 mm²)|
|---|---|
|● finelystranded with core endprocessing|1.5 ... 25 mm²|
|● stranded|1.5 ... 35 mm²|
|**type of connectable conductor cross-sections for main**<br>**contacts for box terminal using both clamping points**||
|● solid|2x(1.5 ... 16 mm²)|
|● finelystranded with core endprocessing|2x(1.5 ... 16 mm²)|
|● stranded|2x(1.5 ... 25 mm²)|
|**type of connectable conductor cross-sections for AWG**<br>**cables for main contacts for box terminal**||
|● usingthe back clamping point|16 ... 2|
|● usingthe front clamping point|18 ... 2|
|● usingboth clamping points|2x(16 ... 2)|
|**type of connectable conductor cross-sections for auxiliary**<br>**contacts**||
|● solid|2x(0.5 ... 2.5 mm²)|
|● finelystranded with core endprocessing|2x(0.5 ... 1.5 mm²)|
|**type of connectable conductor cross-sections for AWG**<br>**cables**||
|● for auxiliarycontacts|2x(20 ... 14)|
|● for auxiliary contacts finely stranded with core end<br>processing|2x (20 ... 16)|
|**Ambient conditions**<br>~~a~~||
|**installation altitude at height above sea level**<br>~~a~~|5 000 m<br>~~a~~|
|**environmental category**||
|● duringtransport accordingto IEC 60721|2K2, 2C1, 2S1, 2M2(max. fall height 0.3 m)|
|● during storage according to IEC 60721|1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get<br>inside the devices), 1M4|
|● during operation according to IEC 60721|3K6 (no formation of ice, no condensation), 3C3 (no salt mist), 3S2 (sand must<br>notget into the devices), 3M6|
|**ambient temperature**||
|● duringoperation|-25 ... +60 °C|
|● duringstorage|-40 ... +80 °C|
|**derating temperature**<br>~~————~~|40 °C|
|**protection class IP on the front according to IEC 60529**<br>~~————~~|IP20|
|**touch protection on the front according to IEC 60529**<br>~~————~~|finger-safe, for vertical contact from the front|
|**UL/CSA ratings**<br>~~————~~||
|**yielded mechanicalperformance[hp] for 3-phase AC motor**<br>~~————~~||
|**● at 220/230 V**||
|— at standard circuit at 50 °C rated value|20 hp|
|**● at 460/480 V**||
|— at standard circuit at 50 °C rated value|40 hp|
|**contact rating of auxiliary contacts according to UL**|B300 / R300|
|**Approvals Certificates**<br>~~ee~~||
|Environmental Product Declaration<br>● global warming potential [CO2 eq] / during manufacturing<br>26.9 kg<br>● global warming potential [CO2 eq] / during sales<br>0.324 kg<br>● global warming potential [CO2 eq] / during operation<br>158 kg<br>● global warming potential [CO2 eq] / after end of life<br>-4.56 kg<br>● global warming potential [CO2 eq] / total<br>181 kg<br>**Environment**<br>**General Product Approval**<br>~~ee~~||



|Environmental Con-|||
|---|---|---|
|firmations|||
||||
|**General Product Approval**|**EMV**|**For use in hazardous locations**|



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|**Test Certificates**<br>**Maritime application**||**other**|
|---|---|---|
|Special Test Certific-<br>ate<br>Type Test Certific-<br>ates/Test Report<br>a|¢|Confirmation|
|**other**<br>**Railway**|||
|Confirmation<br>Special Test Certific-<br>ate<br>Confirmation<br>~~l~~a~~ta}~~<br>QC PASS|||
|**Further information**<br>**Simulation Tool for Soft Starters (STS)**<br>~~OO~~<br>~~—CSC“‘:CC:s*CSC‘iés~~|||
|https://support.industry.siemens.com/cs/ww/en/view/101494917|||
|**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=3RW4038-1BB14|||
|**Cax online generator**|||
|https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RW4038-1BB14|||
|**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**|||
|https://support.industry.siemens.com/cs/ww/en/ps/3RW4038-1BB14|||
|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)**|||
|https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RW4038-1BB14&lang=en|||



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-Q<br>1/L1 3/L2 5/L3 A1 1 14/24 95<br>IN<br>ON/RUN BYPASSED FAILURE/OVERLOAD<br>T1 T2 T3 A2 O O C O<br>2/ 4/ 6/<br>13 N 23 N 96 N 98 N<br>**----- End of picture text -----**<br>


**last modified:** 

4/1/2025 

Subject to change without notice © Copyright Siemens 

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5/29/2026 



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- [Supplier page](https://es.farnell.com/siemens/3rw4038-1bb14/motor-starter-controller/dp/3448665)
---

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