Better World
Siemens SIRIUS Soft Starter, , 18.5 kW, 400 → 600 V ac, 3 Phase, IP20
- RS Stock No.:
- 275-851
- Mfr. Part No.:
- 3RW4027-2BB05
- Brand:
- Siemens
Subtotal (1 unit)*
£478.57
(exc. VAT)
£574.28
(inc. VAT)
FREE delivery for orders over £50.00
Temporarily out of stock
- Shipping from 19 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £478.57 |
*price indicative
Better World
Our Better World range features products that make it easy for you to make a greener product choice you can trust. Click here to find out more.
- RS Stock No.:
- 275-851
- Mfr. Part No.:
- 3RW4027-2BB05
- 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 | 18.5 kW | |
| Motor Starter Type | Soft Start | |
| Range | SIRIUS | |
| Voltage Rating | 400 → 600 V ac | |
| Phase | 3 | |
| Current Rating | 32 A | |
| IP Rating | IP20 | |
| Better World Product | Yes | |
| Better World Claim | Concentrated or compact solution, Saves energy | |
Select all | ||
|---|---|---|
Brand Siemens | ||
Power Rating 18.5 kW | ||
Motor Starter Type Soft Start | ||
Range SIRIUS | ||
Voltage Rating 400 → 600 V ac | ||
Phase 3 | ||
Current Rating 32 A | ||
IP Rating IP20 | ||
Better World Product Yes | ||
Better World Claim Concentrated or compact solution, Saves energy | ||
- COO (Country of Origin):
- CZ
The Siemens Soft Starter is engineered for seamless motor management in challenging environments. It offers robust performance with an integrated bypass contact system, optimising energy efficiency while providing essential protection features. Designed to accommodate motors with varying loads, this soft starter ensures precise control through adjustable current limitation and enhanced motor overload protection. Its compact design allows for versatile installation options, making it ideal for diverse applications.
Enhances energy efficiency
Reliable with thyristor technology
Supports wide voltage range
Robust for harsh conditions
User friendly control circuit
High temperature range performance
Compliant with safety and performance standards
Reliable with thyristor technology
Supports wide voltage range
Robust for harsh conditions
User friendly control circuit
High temperature range performance
Compliant with safety and performance standards
Related links
- Siemens SIRIUS Soft Starter 18.5 kW 3 Phase, IP20
- Siemens SIRIUS Soft Starter 7.5 kW 3 Phase, IP20
- Siemens SIRIUS Soft Starter 55 kW 3 Phase, IP20
- Siemens SIRIUS Soft Starter 75 kW 3 Phase, IP20
- Siemens SIRIUS Soft Starter 45 kW 3 Phase, IP20
- Siemens SIRIUS Soft Starter 15 kW 3 Phase, IP20
- Siemens SIRIUS Soft Starter 37 kW 3 Phase, IP20
- Siemens SIRIUS Soft Starter 30 kW 3 Phase, IP20

