Siemens 3RW4457-6BC44 Soft Starter | 900KW Motor Control
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Siemens 3RW4457-6BC44 Soft Starter | Heavy-Duty Motor Control Solution
- Powerful 880A standard current rating for large industrial motors
- Inside-delta configuration supports up to 1524A, 900KW applications
- Integrated motor protection and thermal monitoring systems
- Robust construction for demanding industrial environments
- Multiple control options with auxiliary contacts for system integration
Product Overview
This Siemens 3RW4457-6BC44 soft starter delivers smooth acceleration for heavy motors. The unit handles extreme power demands with reliable performance. Built-in protection features safeguard your equipment from damage. Note: This model has been succeeded by the advanced 3RW5 series for new installations.
Technical Specifications
- Product Model: 3RW4457-6BC44
- Starter Type: SIRIUS High-Current Soft Starter
- Standard Current: 880A @ 40°C
- Max Current: 1524A (Inside-Delta Configuration)
- Power Rating: 500KW Standard, 900KW Inside-Delta
- Operating Voltage: 200-460V AC
- Control Voltage: 230V AC, 50-60Hz
- Insulation Voltage: 690V
- Power Loss: 250W typical at full load
- Connection Type: Busbar main, screw control terminals
- Cable Size: 50-240mm² main conductors
- Auxiliary Contacts: 3 NO + 1 Changeover
- Dimensions: 510 x 640 x 290 mm
- Weight: Approximately 48 kg
- Protection Class: IP00
- Operating Temp: Up to 60°C with derating
Installation Requirements
- Ensure proper mounting clearances: 100mm top, 75mm bottom
- Use appropriate busbar connections for main power
- Connect control circuit to 230V AC supply
- Configure motor parameters and protection settings
- Verify all connections before power application
Frequently Asked Questions
What is the successor model for this soft starter?
The recommended replacement is Siemens 3RW5556-6HA14 from the newer 3RW5 series.
What types of motors work with this starter?
It's designed for large three-phase motors in heavy industrial applications like crushers and large pumps.
How does the inside-delta configuration help?
This wiring method allows handling much higher currents for extremely large motor applications.
What protection features are included?
The unit provides motor overload protection, thermal monitoring, and adjustable current limitation.
Can this starter operate at high altitudes?
Yes, it's rated for installation altitudes up to 5000 meters above sea level.
Order Information
- Package Contents: 1 x Siemens 3RW4457-6BC44 Soft Starter
- Warranty Protection: 12-month performance guarantee
- Shipping Methods: FedEx, UPS, DHL express available
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