Siemens SIRIUS 3RW44 Soft Starter - Phased Out
Siemens SIRIUS 3RW4445-2BC45 soft starter (phased-out).
The Siemens 3RW4445-2BC45 is a SIRIUS soft starter designed for motor control applications. It is rated for values at 500 V, 40 °C standard operation at 313 A and 200 kW, and inside-delta operation at 542 A and 355 kW. This unit operates on AC voltage from 400-600 V with 230 V AC spring-type terminals.
This soft starter is intended for use in industrial environments to provide smooth acceleration and deceleration of three-phase induction motors. Applications include pump and fan control, conveyor systems, and other machinery where soft starting is beneficial to reduce mechanical stress and power surges. However, this product is phased out, with the preferred successor being the SIRIUS 3RW5545-2HA16.
Stanlo Automation, a veteran-owned surplus parts distributor, offers this Siemens SIRIUS 3RW4445-2BC45 soft starter. While it is a phased-out product, we can help you source this component if it is still part of your existing system, or guide you towards compatible modern solutions.
| Part Number | 3RW4445-2BC45 |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Type | Soft Starter |
| Standard Rating (500V, 40C) | 313 A, 200 kW |
| Inside-Delta Rating | 542 A, 355 kW |
| Voltage | 400-600 V AC |
| Terminals | 230 V AC spring-type |
| Status | Phased-out |