SIRIUS soft starter S3 106 A-3RW4047-1BB14

Product Description

SIRIUS Soft Starter S3 106 A – 3RW4047-1BB14

The Siemens 3RW4047-1BB14 is a high-performance SIRIUS soft starter from the 3RW40 series, designed for smooth and controlled starting and stopping of three-phase induction motors up to 55 kW (400 V). It reduces starting current, torque shocks, and mechanical stress, helping extend motor life and improve operational reliability in industrial applications.

This model belongs to the S3 frame size and is ideal for demanding motor control applications such as pumps, compressors, conveyors, blowers, HVAC systems, and process machinery. The soft starter ensures stable acceleration and deceleration, minimizing wear on both electrical and mechanical components.

The Siemens 3RW40 series features integrated bypass contacts, adjustable starting parameters, current limiting, and built-in motor overload protection, providing an energy-efficient and compact solution for modern motor control systems.

🔹 Key Features

• Siemens SIRIUS 3RW40 series soft starter
• Part Number: 3RW4047-1BB14
• 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 generation
• Adjustable ramp-up and ramp-down settings
• 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