Product details
Siemens 3RW4436-6BC44 SIRIUS Soft Starter
The Siemens 3RW4436-6BC44 SIRIUS Soft Starter provides safe, smooth, and efficient motor starts for high-power applications. Designed for performance and reliability, it handles up to 162A / 90kW at 400V and supports inside-delta circuits up to 281A / 160kW.
Key Features
- Rated operational voltage: 200–460V AC
- Operating current: 162A (standard), 281A (inside-delta)
- Adjustable current limitation for motor protection
- Built-in thyristors and thermal overload protection
- Supports 50/60 Hz operation with ±10% frequency tolerance
- Control supply voltage: 230V AC
- Compact dimensions: 170×200×270 mm
- Protection class: IP00
- Installation altitude up to 5000 m
- Durable screw and busbar terminal design
Technical Highlights
- Power rating: 90kW @ 400V / 160kW @ 400V (inside-delta)
- Motor performance: 40 HP @ 200V / 90 HP @ 460V
- Operating temperature: -25°C to +60°C
- Continuous current: 115% of rated value at 40°C
- Active power loss: 95W (typical)
- Auxiliary contacts: 3 NO + 1 changeover
- Max cable cross-section: up to 120mm²
Advantages
- Reduces mechanical stress on motors and drives
- Prevents current surges during motor start-up
- Integrated bypass for higher efficiency
- Simple installation and maintenance
- Ideal for pumps, fans, and compressors
Warranty and Delivery
- 12-month warranty by Powergear X Automation
- Fast international shipping via FedEx, UPS, DHL
- Certified quality and genuine Siemens components
Contact Us
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825
- Partner: Ubest Automation Limited
Expert FAQ
- Q1: How does the 3RW4436-6BC44 protect motors?
- A: It uses thermal monitoring and current limitation to prevent overload and voltage spikes during startup.
- Q2: Can this model be used in high-altitude installations?
- A: Yes, it supports up to 5000 meters with derating consideration for optimal performance.
- Q3: What makes the SIRIUS 3RW4436-6BC44 more efficient than contactor-based starters?
- A: It minimizes energy loss and reduces wear on mechanical parts, ensuring longer equipment life.
- Q4: Is the starter suitable for both star-delta and inside-delta configurations?
- A: Yes, it is fully compatible with both wiring schemes for flexible installation.
- Q5: What industries typically use this model?
- A: Commonly used in industrial automation, HVAC, and pumping systems where precise motor control is needed.
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Original Source: https://www.powergearx.com/
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