Better World
Siemens 3RW40 Soft Starter 400V ac, 37 kW, 3 Phase
- RS Stock No.:
- 746-4962
- Distrelec Article No.:
- 304-23-403
- Mfr. Part No.:
- 3RW4038-1TB04
- Brand:
- Siemens
Subtotal (1 unit)*
£946.76
(exc. VAT)
£1,136.11
(inc. VAT)
FREE delivery for orders over £60.00
In Stock
- Plus 3 unit(s) shipping from 20 April 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £946.76 |
*price indicative
Better World
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- RS Stock No.:
- 746-4962
- Distrelec Article No.:
- 304-23-403
- Mfr. Part No.:
- 3RW4038-1TB04
- 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 | |
| Product Type | Soft Starter | |
| Power Rating | 37kW | |
| Number of Phases | 3 | |
| IP Rating | IP00 | |
| Mount Type | Screw, Snap-On | |
| Maximum Supply Voltage | 400V ac | |
| Overall Length | 170mm | |
| Standards/Approvals | RCM, UL, CE, CCC, EAC, CSA, ATEX | |
| Overall Width | 55mm | |
| Overall Depth | 170mm | |
| Better World Product | Yes | |
| Better World Claim | Concentrated or Compact Solution, Saves Energy | |
| Series | 3RW40 | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Soft Starter | ||
Power Rating 37kW | ||
Number of Phases 3 | ||
IP Rating IP00 | ||
Mount Type Screw, Snap-On | ||
Maximum Supply Voltage 400V ac | ||
Overall Length 170mm | ||
Standards/Approvals RCM, UL, CE, CCC, EAC, CSA, ATEX | ||
Overall Width 55mm | ||
Overall Depth 170mm | ||
Better World Product Yes | ||
Better World Claim Concentrated or Compact Solution, Saves Energy | ||
Series 3RW40 | ||
- COO (Country of Origin):
- CZ
Sirius 3RW40
Soft starter SIRIUS 3RW40 for standard applications for the soft starting and ramp-down of three-phase asynchronous motors. The integrated bypass allows a very compact construction and ensures low heat dissipation in the control cabinet. Intelligent monitoring functions protect the soft starter against overheating and the motor against overload. In addition, you can limit the current during startup to a settable maximum value.
Features and Benefits:
With the integrated remote reset, you can quickly and easily clear faults from a remote location. Worldwide approvals (e.g. IEC and UL/CSA), also for applications in hazardous areas (ATEX or IEC Ex).
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. The optional fan permits an even more compact design in the control cabinet. Simple, efficient and always up to date - SIRIUS modular system.
Note
Depth dimension quoted is overall depth for each unit
Related links
- Siemens 3RW40 Soft Starter 400V ac 3 Phase
- Siemens 3RW40 Soft Starter 400V ac 3 Phase, IP20
- Siemens 3RW40 Soft Starter 400V 3 Phase, IP20
- Siemens 3RW40 Soft Starter 400V 3 Phase, IP20
- Siemens 3RW40 Soft Starter 480V ac 3 Phase
- Siemens 3RW40 Soft Starter 480V ac 3 Phase, IP20
- Siemens 3RW40 Soft Starter 480V ac 3 Phase, IP20
- Siemens 3RW40 Soft Starter 500V ac 3 Phase
