Siemens SIRIUS Soft Starter 3RW4445-6BC35
Siemens SIRIUS Soft Starter for high-feature motor applications.
The Siemens 3RW4445-6BC35 is a SIRIUS soft starter designed for high-feature applications, enabling soft starting and ramp-down of three-phase asynchronous motors. It offers standard values of 280A at 575V (50°C) and 250 hp, with inside-delta ratings of 485A at 575V (50°C) and 500 hp. The starter operates on 400-600V AC line voltage with a 115V AC control supply voltage and features screw terminals for connection. This model includes integrated bypass, motor overload protection, and intelligent monitoring functions.
This soft starter is suitable for a wide range of industrial applications requiring smooth motor acceleration and deceleration to reduce mechanical stress and power system disturbances. Industries such as manufacturing, material handling, pumps, fans, and compressors benefit from its ability to optimize motor performance and extend equipment life.
Stanlo Automation, your veteran-owned source for industrial automation surplus, offers the Siemens 3RW4445-6BC35. We provide quality parts and reliable service for your MRO needs.
| Type | Soft Starter |
| Series | SIRIUS 3RW44 |
| Standard Current (575V/50°C) | 280A |
| Inside-Delta Current (575V/50°C) | 485A |
| Standard Power (575V) | 250 hp |
| Inside-Delta Power (575V) | 500 hp |
| Line Voltage | 400-600V AC |
| Control Voltage | 115V AC |
| Terminals | Screw |
| Protection | Integrated Motor Overload Protection |
| Bypass | Integrated |