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Siemens SIRIUS 3RW Soft Starter, , 55 kW, 400 V ac, 3 Phase, IP20
- RS Stock No.:
- 746-4937
- Mfr. Part No.:
- 3RW3047-1BB04
- Brand:
- Siemens
Subtotal (1 unit)*
£879.17
(exc. VAT)
£1,055.00
(inc. VAT)
FREE delivery for orders over £50.00
Temporarily out of stock
- 2 unit(s) shipping from 04 December 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £879.17 |
*price indicative
Better World
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- RS Stock No.:
- 746-4937
- Mfr. Part No.:
- 3RW3047-1BB04
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Power Rating | 55 kW | |
| Motor Starter Type | Soft Start | |
| Range | SIRIUS 3RW | |
| Voltage Rating | 400 V ac | |
| Phase | 3 | |
| Current Rating | 106 A | |
| IP Rating | IP20 | |
| Overall Length | 186mm | |
| Overall Width | 70mm | |
| Series | 3RW30 | |
| Better World Product | Yes | |
| Overall Depth | 160mm | |
| Better World Claim | Concentrated or compact solution, Saves energy | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Power Rating 55 kW | ||
Motor Starter Type Soft Start | ||
Range SIRIUS 3RW | ||
Voltage Rating 400 V ac | ||
Phase 3 | ||
Current Rating 106 A | ||
IP Rating IP20 | ||
Overall Length 186mm | ||
Overall Width 70mm | ||
Series 3RW30 | ||
Better World Product Yes | ||
Overall Depth 160mm | ||
Better World Claim Concentrated or compact solution, Saves energy | ||
- COO (Country of Origin):
- CZ
Miniature Soft Starter
Soft starter SIRIUS 3RW30 for standard applications for the soft starting of three-phase asynchronous motors.
Soft starting, reduction of current peaks, prevention of supply voltage fluctuations during startup, reduction of load on the power supply network, reduction of mechanical load in the drive, considerable saving of space and wiring compared to star-delta (wye-delta) starters and frequency converters, maintenance-free switching and extremely easy handling. The integrated bypass allows a very compact construction and ensures low heat dissipation in the control cabinet. Worldwide approvals (e.g. IEC and UL/CSA).
The 3RW soft starters are available for supply systems up to 690 V in a wide performance range with different control supply voltages and all with both screw and spring-type terminals. For the 3RW30/40 there are additional versions with 24 V control supply voltage. Some of the 3RW40 up to size S3, and all 3RW44 units also offer thermistor motor protection.
With the optional link module, the soft starters can be attached to the circuit breakers, even for the versions with spring-type terminals.
Simple, efficient and always up to date - SIRIUS modular system.
Soft starting, reduction of current peaks, prevention of supply voltage fluctuations during startup, reduction of load on the power supply network, reduction of mechanical load in the drive, considerable saving of space and wiring compared to star-delta (wye-delta) starters and frequency converters, maintenance-free switching and extremely easy handling. The integrated bypass allows a very compact construction and ensures low heat dissipation in the control cabinet. Worldwide approvals (e.g. IEC and UL/CSA).
The 3RW soft starters are available for supply systems up to 690 V in a wide performance range with different control supply voltages and all with both screw and spring-type terminals. For the 3RW30/40 there are additional versions with 24 V control supply voltage. Some of the 3RW40 up to size S3, and all 3RW44 units also offer thermistor motor protection.
With the optional link module, the soft starters can be attached to the circuit breakers, even for the versions with spring-type terminals.
Simple, efficient and always up to date - SIRIUS modular system.
Features and Benefits
- Compact design - width of 22.5mm
- One device for entire control voltage range, from UC 24V to 230V
- Optimal adjustment capability using only 3 potentiometers, start time, starting voltage & stopping time, all of which can be set individually
- Operating status display (Ready/Run) via two LED's
Note
Connection System - Screw Terminal: 1CB54; Cable Clamp: 2CB54
Related links
- Siemens SIRIUS 3RW Soft Starter 55 kW 3 Phase
- Siemens SIRIUS Soft Starter 55 kW 3 Phase, IP20
- Siemens SIRIUS 3RW Soft Starter 15 kW 3 Phase, IP20
- Siemens SIRIUS 3RW Soft Starter 1.5 kW 3 Phase, IP20
- Siemens SIRIUS 3RW Soft Starter 22 kW 3 Phase, IP20
- Siemens SIRIUS 3RW Soft Starter 37 kW 3 Phase, IP20
- Siemens SIRIUS 3RW Soft Starter 7.5 kW 3 Phase, IP20
- Siemens SIRIUS 3RW Soft Starter 5.5 kW 3 Phase, IP20