Siemens 3RW4038-1BB04
Shop the Siemens 3RW4038-1BB04 SIRIUS soft starter, size S2, rated for 77A and 37kW at 400V. Ideal for standard applications requiring smooth motor acceleration, integrated overload protection, and an efficient bypass system. Operates on 200-480V AC with a 24V AC/DC control voltage.
Siemens 3RW4038-1BB04
The Siemens 3RW4038-1BB04 is a SIRIUS soft starter designed for the smooth and gentle starting of three-phase asynchronous motors. This two-phase controlled device effectively reduces starting current peaks and prevents mechanical stress on the drive train, extending the lifespan of your equipment. It features an integrated bypass contact system to minimize power loss during operation, enhancing overall energy efficiency. With built-in motor overload protection and adjustable current limiting, the 3RW4038-1BB04 provides a reliable and compact solution for standard motor starting applications, ensuring safe and efficient performance in a space-saving S2 frame size.
Technical Specifications:
- Rated Operational Current: 77 A at 40 °C
- Rated Operational Voltage: 200 … 480 V AC
- Motor Power (at 400 V): 37 kW
- Control Supply Voltage: 24 V AC/DC
- Frame Size: S2
- Connection Type: Screw terminals
- Bypass Contact System: Integrated

| Brand | Siemens |
|---|---|
| Model | 3RW4038-1BB04 |
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