The Siemens 3RW3018-1BB14 is a compact and reliable SIRIUS 3RW30 Soft Starter designed for the smooth starting and stopping of three-phase induction motors. It reduces starting current, minimizes mechanical stress, and protects electrical networks from voltage dips during motor startup. With a rated current of 17.6A and motor power up to 7.5kW at 400V, this soft starter is ideal for pumps, fans, compressors, conveyors, HVAC systems, and other industrial motor control applications. Its integrated bypass contact technology reduces power losses and heat generation, ensuring high efficiency and long service life.
Key Features
• Motor Rating: 7.5kW at 400V AC
• Operating Voltage: 200–480V AC
• Control Voltage: 110–230V AC/DC
• Compact S00 Frame Size
• Soft Start and Soft Stop Functionality
• Reduces Starting Current Peaks
• Minimizes Mechanical Stress on Motors and Equipment
• Integrated Bypass Contacts for Reduced Heat Losses
• Smooth Ramp-Up and Ramp-Down Operation
• Screw Terminal Connections
• DIN Rail and Panel Mounting Compatible
• Maintenance-Free Operation
• High Reliability and Long Service Life
• Suitable for Pumps, Fans, Compressors, Conveyors, and HVAC Systems
• Supports Three-Phase Induction Motors
• Designed for Industrial Automation and Motor Control Applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RW30 |
| Part Number | 3RW3018-1BB14 |
| Product Type | Soft Starter |
| Size | S00 |
| Rated Operational Current | 17.6 A |
| Motor Power @ 400V | 7.5 kW |
| Motor Power @ 230V | 4 kW |
| Motor Voltage | 200 – 480 V AC |
| Control Voltage | 110 – 230 V AC/DC |
| Number of Phases | 3 Phase |
| Number of Poles | 3 Pole |
| Terminal Type | Screw Terminals |
| Protection Class | IP20 |
| Mounting Type | DIN Rail / Panel Mounting |
| Starting Method | Soft Start with Voltage Ramp |
| Ramp-Up Time | Adjustable (0–20 sec) |
| Ramp-Down Time | Adjustable (0–20 sec) |
| Integrated Bypass Contact | Yes |
| Current Limitation | Reduces Starting Current |
| Operating Temperature | -25°C to +60°C |
| Dimensions (H × W × D) | 95 × 45 × 150 mm |
| Frequency | 50/60 Hz |
| Standard Compliance | IEC 60947-4-2 |
| Application | Pumps, Fans, Compressors, Conveyors, HVAC Systems, Escalators, Industrial Machinery |
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