SIRIUS soft starter S0 38 A-3RW3028-1BB04

Product Description

IRIUS Soft Starter S0 38 A – 3RW3028-1BB04

The Siemens SIRIUS 3RW3028-1BB04 is a high-performance soft starter from the S0 series, designed for smooth starting and stopping of three-phase induction motors up to 18.5 kW (400 V). It reduces mechanical stress, limits inrush current, and prevents voltage dips during motor starting, ensuring efficient and reliable motor operation.

This soft starter is widely used in pumps, compressors, conveyors, HVAC systems, and industrial automation, where controlled acceleration and deceleration are required. With its integrated bypass system, it ensures low power loss and reduced heat generation after startup.

🔹 Key Features

• Siemens SIRIUS 3RW30 series soft starter
• Model: 3RW3028-1BB04
• Rated current: 38 A
• Motor power: Up to 18.5 kW at 400 V
• Supply voltage: 200–480 V AC, 3-phase
• Control voltage: 24 V AC/DC
• Smooth voltage ramp-up and ramp-down control
• Integrated bypass contact system for energy efficiency
• Compact S0 frame size for space-saving installation
• Screw terminal connection for secure wiring
• Reduces mechanical and electrical stress on motors
• LED status indication for easy monitoring
• DIN rail/panel mounting
• Complies with IEC 60947-4-2 standards