Product details
Siemens 3RW4445-6BC44 SIRIUS Soft Starter
Reliable. Compact. Powerful. The Siemens 3RW4445-6BC44 offers smooth motor starts and complete protection for industrial systems. Perfect for heavy-duty use in automation and energy applications.
- Model: 3RW4445-6BC44
- Brand: Siemens SIRIUS
- Rated Current: 313A (Standard) / 542A (Inside Delta)
- Motor Power: 160 kW (Standard) / 315 kW (Delta)
- Voltage Range: 200–460 V AC
- Control Supply Voltage: 230 V AC, 50/60 Hz
- Operating Temp.: -25°C to +60°C
- Size: 210 × 230 × 298 mm
- Protection: IP00
- Warranty: 12 months
- Shipping: FedEx / UPS / DHL
Highlights
- Advanced start/stop control for smooth motor operation
- Protects against overload, short circuit, and phase failure
- Low heat emission with 145 W power loss at full load
- Adjustable start current and ramp-up time
- Supports up to 5000 m installation height
- Easy screw terminal connection system
Performance Specs
- Operating Current Range: 250–313 A
- Inside Delta Operation: up to 542 A
- Frequency: 50–60 Hz
- Power Output: 90–315 kW (depending on mode)
- Continuous Current Capacity: 115% at 40°C
- Minimum Load: 8% of motor rating
Key Advantages
- Soft torque control reduces mechanical wear
- Efficient heat management ensures stability
- Universal compatibility with global voltage ranges
- Compact design for smaller control cabinets
- Ready for high-performance automation systems
About Powergear X Automation
- Authorized Siemens component supplier
- 12-month warranty and professional technical support
- Worldwide express delivery via FedEx, UPS, DHL
- Trusted partner: Ubest Automation Limited
- Contact: sales@powergearx.com
- WhatsApp: +86 18030005825
Expert FAQs
- Q1: Is the 3RW4445-6BC44 suitable for high-inertia loads?
- A1: Yes, it can handle pumps, conveyors, and compressors with high-inertia torque.
- Q2: What setup is needed for inside-delta operation?
- A2: Use six motor leads and follow Siemens wiring guidelines for balanced phase control.
- Q3: How do I reduce starting current?
- A3: Adjust the current limit and ramp-up time using the control parameters on the unit.
- Q4: Can it be used in high-altitude environments?
- A4: Yes, tested up to 5000 m above sea level with appropriate derating.
- Q5: What is the most common installation mistake?
- A5: Incorrect terminal tightening. Always ensure proper torque to prevent overheating.
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Original Source: https://www.powergearx.com/
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