- PLC Products
- PLC Brand
- Quick Inquiry
- Products Description
SIRIUS 3RW55 Soft Starter 400kW, 690V AC
Product Description
The SIRIUS 3RW5544-6HA14 is a high-performance soft starter from Siemens, designed for heavy-duty industrial applications. It provides smooth, controlled acceleration and deceleration for three-phase AC motors up to 400 kW at 690V, significantly reducing mechanical stress and current inrush. This ensures longer lifespan for your motors and connected machinery.
Its rugged design is built for reliability in harsh environments, featuring a high degree of immunity to interference. Key functions include integrated motor and overload protection, a built-in bypass contactor for energy efficiency, and a clear LED status display. The 3RW55 series is the ideal, cost-effective solution for conveyor systems, pumps, fans, and compressors, offering simplicity and robustness without the complexity of a full drive.
Product Data Attributes Table
| Attribute Category | Specification |
|---|---|
| Article Number | 3RW5544-6HA14 |
| Product Line | SIRIUS 3RW55 |
| Type | Soft Starter |
| Rated Operational Voltage | 690 V AC |
| Rated Operational Power | 400 kW @ 400V 500 kW @ 500V 660 kW @ 690V |
| Rated Operational Current | 725 A |
| Max. Ambient Temperature | +60 °C |
| Mounting Type | Fixed Mounting |
| Enclosure Rating | IP00 (Must be installed in a control cabinet) |
| Control Supply Voltage | 100…250 V AC/DC |
| Integrated Bypass | Yes |
| Integrated Motor Protection | Yes (Class 10) |
| Communication Options | PROFIBUS DP (via optional communication module) |
| Dimensions (W x H x D) | 215 x 270 x 137.5 mm |
| Weight | Approx. 7.5 kg |
- Over 300,000 products in stock
- Worldwide delivery
- BUY WITH CONFIDENCE





