SIRIUS soft starter S3 106 A-3RW4047-1BB04

Product Description

SIRIUS Soft Starter S3 106 A – 3RW4047-1BB04

The Siemens 3RW4047-1BB04 is a powerful and compact SIRIUS soft starter from the 3RW40 series, designed for smooth starting and stopping of three-phase induction motors up to 55 kW (400 V). It reduces starting current, torque surges, and mechanical stress, improving motor lifespan and ensuring reliable operation of industrial machinery and electrical systems.

This model belongs to the S3 frame size and is ideal for heavy-duty industrial applications requiring controlled motor acceleration and deceleration. It is commonly used in pumps, compressors, fans, conveyors, HVAC systems, crushers, and process automation equipment.

The 3RW40 series features integrated bypass contacts, adjustable ramp control, current limiting, and built-in motor overload protection, making it an efficient and space-saving motor control solution for modern industrial panels.

🔹 Key Features

• Siemens SIRIUS 3RW40 series soft starter
• Part Number: 3RW4047-1BB04
• Frame size: S3
• Rated current: 106 A
• Motor power: 55 kW at 400 V
• Supply voltage: 200–480 V AC, 3-phase
• Control voltage: 110–230 V AC/DC
• Soft start and soft stop functionality
• Integrated bypass contacts for reduced heat loss
• Adjustable starting voltage and ramp-up time
• Built-in motor overload protection
• Current limiting function for controlled startup
• Compact design for optimized panel space
• Screw terminal connections for secure installation
• Complies with IEC 60947-4-2 standards