Product details
Siemens 3RW4426-1BC44 Soft Starter – Premium Motor Control
The Siemens SIRIUS 3RW4426-1BC44 delivers superior motor starting performance. This advanced soft starter handles 37kW standard and 75kW inside-delta applications. It ensures smooth acceleration for your industrial motors.
Essential Technical Specifications
- Manufacturer: Siemens SIRIUS
- Product Model: 3RW4426-1BC44
- Rated Current: 77A at 40°C (Standard)
- Inside-Delta Current: 133A at 40°C
- Motor Power: 37kW (Standard), 75kW (Inside-Delta)
- Voltage Range: 200-460V AC
- Control Voltage: 230V AC
- Frequency: 50-60Hz
Advanced Protection Systems
- Integrated bypass contact system
- Complete motor overload protection
- Thermistor motor protection monitoring
- Adjustable current limitation
- Intrinsic device protection
- External reset capability
Installation & Dimensions
- Width: 170mm, Height: 192mm, Depth: 270mm
- Mounting Type: Screw fixing
- Rotation: ±90° on vertical surface
- Tilt: ±22.5° forward and backward
- Clearance: 100mm above, 5mm sides, 75mm below
Wiring & Connections
- Main Circuit: Box terminals
- Auxiliary Circuit: Screw terminals
- Contact Configuration: 3 NO + 1 CO
- Conductor Size: 2.5-70mm²
- AWG Range: 10 to 2/0
- Max Cable Length: 500 meters
Environmental Specifications
- Operating Temperature: -25°C to +60°C
- Storage Temperature: -25°C to +80°C
- Max Altitude: 5000 meters above sea level
- Protection Class: IP00
- Derating Temperature: 40°C
Power Performance Data
- Mechanical Power: 37,000W at 400V standard
- Inside-Delta Power: 75,000W at 400V
- Minimum Load: 8% of motor current
- Continuous Current: 115% of rated value
- Power Loss: 45W typical during operation
Shipping & Service Information
- Warranty: 12 Months Comprehensive
- Shipping Methods: FedEx, UPS, DHL
- Delivery: Worldwide Express Available
- Support: Technical Consultation Provided
Professional Support Team
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825
- Response Time: Within 24 Hours
Technical Questions & Answers
What makes inside-delta configuration special?
- Inside-delta wiring boosts current handling to 133A. This allows control of larger 75kW motors efficiently.
How does the thermal protection work?
- The system monitors motor temperature through thermistors. It automatically shuts down during overheating conditions.
Can I use this starter with different voltage systems?
- Yes, it supports 200-460V AC systems. The device automatically adapts to your voltage requirements.
What maintenance schedule is recommended?
- Check electrical connections every six months. Ensure proper ventilation around the unit for optimal cooling.
Is professional installation required?
- We recommend qualified electricians for installation. Proper setup ensures maximum performance and safety.
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Original Source: https://www.powergearx.com/
Technology Partner: Ubest Automation Limited
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