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Siemens SIRIUS 3RW Soft Starter, , 37 kW, 400 V ac, 3 Phase, IP20
- RS Stock No.:
- 746-4925
- Distrelec Article No.:
- 300-55-769
- Mfr. Part No.:
- 3RW3038-1BB04
- Brand:
- Siemens
Subtotal (1 unit)*
£682.61
(exc. VAT)
£819.13
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 3 unit(s) ready to ship from another location
- Plus 3 unit(s) shipping from 07 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £682.61 |
*price indicative
Better World
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- RS Stock No.:
- 746-4925
- Distrelec Article No.:
- 300-55-769
- Mfr. Part No.:
- 3RW3038-1BB04
- 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 | 37 kW | |
| Motor Starter Type | Soft Start | |
| Range | SIRIUS 3RW | |
| Voltage Rating | 400 V ac | |
| Phase | 3 | |
| Current Rating | 72 A | |
| IP Rating | IP20 | |
| Overall Length | 168mm | |
| Overall Width | 55mm | |
| Overall Depth | 144mm | |
| Series | 3RW30 | |
| Mounting Type | Chassis Mount | |
| Better World Product | Yes | |
| Better World Claim | Concentrated or compact solution, Saves energy | |
| Hazardous Area Certification | ATEX | |
Select all | ||
|---|---|---|
Brand Siemens | ||
Power Rating 37 kW | ||
Motor Starter Type Soft Start | ||
Range SIRIUS 3RW | ||
Voltage Rating 400 V ac | ||
Phase 3 | ||
Current Rating 72 A | ||
IP Rating IP20 | ||
Overall Length 168mm | ||
Overall Width 55mm | ||
Overall Depth 144mm | ||
Series 3RW30 | ||
Mounting Type Chassis Mount | ||
Better World Product Yes | ||
Better World Claim Concentrated or compact solution, Saves energy | ||
Hazardous Area Certification ATEX | ||
- COO (Country of Origin):
- CZ
Siemens NO Soft Starter, 400V AC, 37kW - 3RW30 Series - 3RW3038-1BB04
This Siemens soft starter moderates the operating parameters of a motor when it's activated. It does this by gradually inputting current to prevent motor overload. Thanks to a minimum voltage of 200V and a maximum of 480V, along with an ambient temperature range of -40°C to +80°C, you can use this device in a wide variety of applications and environments. The starter uses a NO (normally open) auxiliary contact which keeps the connection in constant operation, allowing for automatic reaction time. Install this soft starter in mechanical kit that uses a heavy motor.
• +40°C derating temperature dissipates heat to prevent overheating
• Red visual display for quick notification if faults are detected
• Long 300m cable giving convenient reach to motors in large installations
• Red visual display for quick notification if faults are detected
• Long 300m cable giving convenient reach to motors in large installations
How do I mount this motor soft starter?
This device is mounted vertically in motor equipment. You can attach it using screws or simply clip it on.
How do I power the soft starter after installation?
Connect compatible electrical sources via the screw terminals located top and bottom at the front of the device. You can use this method to link both the main and auxiliary circuits.
Related links
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