The SIEMENS 3RW5543-6HA14 is a robust digital soft starter from the advanced SIRIUS 3RW55 series, designed for smooth and controlled start-up of three-phase motors up to 110 kW (Normal Duty) and 200 kW (Heavy Duty) at 400 V. With an operating voltage range of 200–480 V AC, it minimizes mechanical stress and electrical surges, thereby enhancing motor lifespan and overall system reliability.

Key Features

Motor Power Rating:
 • 110 kW (Normal Duty)
 • 200 kW (Heavy Duty) at 400 V AC

Rated Operational Current:
 • 210 A (Normal Duty)
 • 186 A (Heavy Duty)

Control Voltage: 110–250 V AC/DC
Mounting: Panel mounting with screw fixing
Integrated Bypass Contact System: Yes
Operating Temperature Range: –25°C to +60°C
Insulation Voltage: 600 V AC
Degree of Protection: IP20
Communication: Optional PROFINET / PROFIBUS / Modbus modules available
Degree of Pollution: 3 (according to IEC 60947-4-2)