SIRIUS soft starter S3 106 A-3RW4047-1TB04

Product Description

SIRIUS Soft Starter S3 106 A – 3RW4047-1TB04

The Siemens 3RW4047-1TB04 is a compact and high-performance 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 minimizes starting current, torque shocks, and mechanical stress, helping improve motor lifespan and ensuring reliable operation in industrial applications.

This model belongs to the S3 frame size and features a 24 V AC/DC control voltage, making it ideal for PLC-controlled and automation-based systems. It is widely used in pumps, compressors, fans, conveyors, HVAC systems, and manufacturing machinery, where controlled motor acceleration and deceleration are essential.

The Siemens 3RW40 series includes integrated bypass contacts, adjustable ramp control, current limiting, and built-in motor overload protection, providing an efficient, compact, and maintenance-friendly motor control solution.

🔹 Key Features

• Siemens SIRIUS 3RW40 series soft starter
• Part Number: 3RW4047-1TB04
• Frame size: S3
• Rated current: 106 A
• Motor power: 55 kW at 400 V
• Supply voltage: 200–480 V AC, 3-phase
• Control voltage: 24 V AC/DC
• Soft start and soft stop functionality
• Integrated bypass contacts for reduced heat generation
• Adjustable ramp-up and ramp-down settings
• Built-in motor overload protection
• Current limiting function for smooth startup
• Compact design for optimized panel space
• Screw terminal connections for secure installation
• Complies with IEC 60947-4-2 standards