3RW4447-6BC44 Soft Starter Siemens

Siemens 3RW4447-6BC44 Soft Starter - Advanced Motor Control Solution

Technical Specifications

• Model: 3RW4447-6BC44
• Standard Current: 432A at 400V, 40°C
• Inside-Delta Current: 748A at 400V, 40°C
• Power Rating: 250kW standard, 400kW inside-delta
• Voltage Range: 200-460V AC operating voltage
• Control Voltage: 230V AC supply requirement
• Frequency Range: 50-60Hz operating frequency
• Connection Type: Screw terminals for secure wiring

Performance Ratings

• Standard Circuit (40°C): 432A, 250kW at 400V
• Standard Circuit (50°C): 385A continuous operation
• Standard Circuit (60°C): 335A maximum rating
• Inside-Delta (40°C): 748A, 400kW at 400V
• Inside-Delta (50°C): 667A continuous operation
• Inside-Delta (60°C): 580A maximum rating
• Power Loss: 232W typical during operation

Protection Features

• Motor Overload Protection: Adjustable current limitation
• Thermal Protection: Evaluates motor thermal resistors
• Intrinsic Protection: Built-in device safety features
• External Reset: Manual reset capability
• Current Limitation: Adjustable from 86A minimum
• Minimum Load: 8% of motor current requirement

Electrical Connections

• Main Circuit: Busbar connection for power lines
• Control Circuit: Screw-type terminals
• Auxiliary Contacts: 3 NO contacts + 1 changeover
• Conductor Range: 70-240mm² finely stranded
• AWG Compatibility: 2/0 to 500 kcmil conductors
• Maximum Cable Length: 500 meters supported

Contact our sales team for pricing and technical support: sales@nex-auto.com