SIRIUS soft starter S2 63 A-3RW4037-1BB14

Product Description

SIRIUS Soft Starter S2 63 A – 3RW4037-1BB14

The Siemens 3RW4037-1BB14 is a high-performance SIRIUS soft starter from the 3RW40 series, designed for smooth starting and stopping of three-phase induction motors up to 30 kW (400 V). It ensures reduced inrush current, mechanical stress, and voltage dips, improving motor life and system stability in industrial applications.

This model belongs to the S2 frame size, making it suitable for medium-power motor control panels. It is widely used in pumps, fans, compressors, conveyors, HVAC systems, and process machinery, where controlled acceleration and deceleration is required for safe and efficient operation.

🔹 Key Features

• Siemens SIRIUS 3RW40 series soft starter
• Part Number: 3RW4037-1BB14
• Frame size: S2
• Rated current: 63 A
• Motor power: Up to 30 kW at 400 V
• Supply voltage: 200–480 V AC, 3-phase
• Control voltage: 110–230 V AC/DC
• Integrated bypass system for reduced heat loss after start
• Thyristor-based voltage ramp control
• Adjustable starting time and current limiting
• Built-in motor overload protection
• Compact modular design for panel mounting
• Screw-type terminals for secure wiring
• Complies with IEC 60947-4-2 standards