Siemens Soft Starter 3RW3038-1BB04

The Siemens 3RW3038-1BB04 is a basic performance SIRIUS soft starter designed to reduce motor voltage and limit inrush current for three-phase asynchronous motors during startup, thereby minimizing mechanical stress on connected equipment. 

Key Specification:

• Product Type: SIRIUS 3RW30 soft starter.
• Function: Soft starting for a single direction of rotation.
• Rated Operational Current (Ie): 72 A at 40°C.
• Rated Operational Voltage (Ue): 200 to 480 V AC.
• Dimensions (approx): 168 mm (L) x 55 mm (W) x 144 mm (H).

Integrated bypass contacts are included, which minimize power loss across the semiconductors (thyristors) once the motor has started.