Siemens SIRIUS 3RW40 Soft Starter, Compact 3-phase Soft Starter for Standard Load Fans & Pumps
-
Highlight
Siemens SIRIUS 3RW40 soft starter
,3-phase soft starter for pumps
,compact soft starter for fans
-
SeriesSIRIUS 3RW40
-
Control Method2-phase Control
-
Rated Voltage400V (3-phase)
-
Power Range @400V7.5 ~ 250 KW
-
Current Range12.5A ~ 432A
-
Built-in ProtectionElectronic Overload Protection
-
Shipping TermInternational Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
-
Freight ChargeFor Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quot
-
Place of OriginGermany
-
Brand NameSiemens
-
Model Number3RW40
-
Minimum Order Quantity1
-
Price$100 - $600
-
Packaging DetailsOriginal
-
Delivery Time3-5Workdays
-
Payment TermsL/C,D/A,D/P,T/T
Siemens SIRIUS 3RW40 Soft Starter, Compact 3-phase Soft Starter for Standard Load Fans & Pumps
Siemens SIRIUS 3RW40 Soft Starter
The Siemens SIRIUS 3RW40 compact soft starter utilizes 2-phase control for 3-phase asynchronous motors under standard loads. It provides smooth soft start and soft stop functionality, limits inrush current, and reduces pump water hammer and transmission shock. Equipped with integrated electronic overload protection and a compact cabinet design, it covers motors from 7.5 to 250kW. Widely used in fans, pumps, and conventional industrial projects with stable performance and simple commissioning.
Key Features
- 2-phase control for smooth soft start & soft stop with lower starting inrush current
- Integrated electronic overload protection supporting motor overheat protection
- Compact cabinet structure to save control panel installation space
- Optimized for standard industrial loads such as fans and pumps
- Stable operation, simple commissioning and convenient maintenance
- Ideal for medium-power conventional load scenarios
Specifications & Model List
| Series | Type | Rated Power @400V | Rated Current Range | Core Features | Full Model List |
|---|---|---|---|---|---|
| 3RW40 | Basic 2-phase control | 7.5~250kW | 12.5A~432A | Compact design with built-in overload protection for standard fan & pump loads | 3RW4024-1BB04, 3RW4026-1BB04, 3RW4027-1BB04, 3RW4028-1BB04, 3RW4036-1BB04, 3RW4037-1BB04, 3RW4038-1BB04, 3RW4046-1BB04, 3RW4047-1BB04, 3RW4055-6BB44, 3RW4056-6BB44, 3RW4073-6BB44, 3RW4074-6BB44, 3RW4075-6BB44, 3RW4076-6BB44 |
Application Fields
- Industrial centrifugal pumps, sewage pumps, circulating water pumps
- Induced draft fans, exhaust fans, large HVAC fans
- Ordinary air compressors
- Standard loads in light industry, water treatment and building materials
Frequently Asked Questions
What is the difference between 3RW40 and 3RW30?
3RW40 covers higher power up to 250kW. Both adopt 2-phase control without communication. 3RW40 is designed for medium-power standard fans and pumps.
Can it be used for heavy-duty equipment such as crushers?
Not recommended. High-impact heavy loads like crushers should use the 3RW55 series.
What is the selection principle?
Select based on motor rated current, confirm main circuit voltage and ambient temperature.
Does it come with built-in bypass?
Partial models integrate bypass contactor to reduce heat generation during running.
What about warranty and documentation?
Brand new genuine Siemens with OEM warranty. Datasheets, CAD drawings and quotations available.
Related Products
Our products are sold all over the world, you can rest assured.
