Siemens SIRIUS 3RW4073-2BB44 Soft Starter - 230A, 132kW (400V)
Siemens SIRIUS 3RW4073-2BB44 Soft Starter - 230A.
The Siemens SIRIUS 3RW4073-2BB44 is a soft starter designed to smoothly start and stop three-phase asynchronous motors. Rated for S12 service, it can handle a continuous current of 230A and is suitable for motors up to 132 kW at 400V. The control voltage range is 200-460V AC, with a specific 230V AC coil operation. This starter features spring-type terminals for secure connections.
This soft starter is ideal for applications where smooth motor acceleration is required to reduce mechanical stress and electrical inrush current, such as in conveyor systems, pumps, fans, and compressors. It helps to prolong the life of motor and connected equipment.
As a phased-out product, the Siemens 3RW4073-2BB44 is a great find for maintaining existing systems. Stanlo Automation, a veteran-owned surplus parts distributor, has this item available. The preferred successor is the SIRIUS 3RW5073-2AB14.
| Series | SIRIUS 3RW40 |
| Model | S12 |
| Max Current | 230 A |
| Max Motor Power | 132 kW (400 V) |
| Control Voltage | 200-460 V AC |
| Coil Voltage | 230 V AC |
| Terminals | Spring-type |
| Status | Phased-out product |