The Siemens 3RW5547-6HA14 is a high-capacity SIRIUS 3RW55 series Soft Starter designed for smooth starting and stopping of large three-phase induction motors. It reduces mechanical stress, limits inrush current, and improves overall motor life and system stability in heavy industrial applications.
This model is typically used in high-power motor systems such as large pumps, compressors, crushers, conveyors, and industrial HVAC systems where controlled acceleration is critical.
• Siemens SIRIUS 3RW55 Soft Starter Series
• Part Number: 3RW5547-6HA14
• Rated operational voltage: 200–480 V AC
• Control supply voltage: 110–250 V AC
• Rated current: ≈ 470 A
• Advanced electronic motor control system
• Integrated overload protection
• Soft start & soft stop functionality
• Built-in bypass for energy-efficient operation after start
• Adjustable ramp-up and ramp-down time
• Current limiting and torque control features
• Reduced mechanical stress on motor and gearbox
• High reliability for continuous industrial duty
• Modular panel mounting design
• IEC 60947-4-2 compliant
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RW55 |
| Part Number | 3RW5547-6HA14 |
| Product Type | Soft Starter |
| Rated Current | ~470 A |
| Supply Voltage | 200–480 V AC |
| Control Voltage | 110–250 V AC |
| Motor Type | 3 Phase Induction Motor |
| Starting Method | Voltage ramp control |
| Stop Function | Soft stop / pump stop |
| Protection | Electronic overload protection |
| Bypass | Integrated internal bypass |
| Mounting Type | Panel mounting |
| Standard | IEC 60947-4-2 |
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