Product details
Siemens 3RW4444-6BC44 – Versatile Power Control
The Siemens SIRIUS 3RW4444-6BC44 offers reliable motor starting solutions. This flexible soft starter manages 250A standard and 433A inside-delta currents. It efficiently controls motors from 132kW to 250kW capacity.
Key Performance Data
- Brand: Siemens SIRIUS
- Model: 3RW4444-6BC44
- Standard Rating: 250A at 40°C
- Inside-Delta Rating: 433A at 40°C
- Standard Power: 132kW at 400V
- Inside-Delta Power: 250kW at 400V
- Operating Range: 200-460V AC
- Control Voltage: 230V AC
Smart Protection Systems
- Integrated bypass contact system
- Advanced thyristor technology
- Complete motor overload protection
- Thermistor monitoring capability
- Adjustable current limitation
- External reset functionality
Compact Design Features
- Unit Size: 210×230×298mm
- Mounting: Screw fixing type
- Rotation: ±90° capability
- Tilt Adjustment: ±22.5° range
- Top Clearance: 100mm required
- Side Clearance: 5mm minimum
Flexible Wiring Options
- Main Terminals: Busbar connection
- Control Terminals: Screw type
- Contact Configuration: 3 NO + 1 CO
- Wire Size: 70-240mm² main
- AWG Range: 3/0 to 600 kcmil
- Maximum Run: 500 meters cable
Robust Environmental Specs
- Operating Temp: -25°C to +60°C
- Storage Temp: -25°C to +80°C
- Max Elevation: 5000 meters
- Enclosure Rating: IP00
- Frequency: 50-60Hz operation
Efficiency Characteristics
- Typical Loss: 110W during operation
- Minimum Load: 8% motor current
- Continuous Rating: 115% capacity
- Horsepower: 60hp at 208V
- Response: Quick fault display
Purchase & Support
- Warranty Coverage: 12 months
- Shipping Methods: FedEx, UPS, DHL
- Global Delivery: Available worldwide
- Technical Support: Included
Technical Assistance
- Email Support: sales@powergearx.com
- Phone Advice: +86 18030005825
- Response Time: Within 24 hours
Common Technical Questions
What motor types work with this starter?
- Perfect for three-phase squirrel cage motors. Handles industrial pumps, fans, and compressors effectively.
How does temperature derating work?
- Current capacity reduces at higher temperatures. At 60°C, standard current drops to 185A from 250A.
What are the main advantages?
- Smooth motor starting reduces mechanical stress. Energy efficiency improves with optimized acceleration.
How to select proper wire size?
- Choose 70-240mm² cables for main circuits. Follow local electrical codes for installation safety.
What indicates proper operation?
- Check the display for normal status. Monitor motor acceleration for smooth performance without jerking.
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Original Source: https://www.powergearx.com/
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