SIRIUS soft starter S2 63 A-3RW4037-1TB04

Product Description

SIRIUS Soft Starter S2 63 A – 3RW4037-1TB04

The Siemens 3RW4037-1TB04 is a compact and reliable 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 minimizes starting current, torque shocks, and mechanical stress, helping improve motor life and overall system efficiency.

This model belongs to the S2 frame size and is suitable for industrial motor control applications requiring controlled acceleration and deceleration. It is widely used in pumps, fans, compressors, conveyors, HVAC systems, and process machinery, where smooth motor starting is essential for operational stability and reduced maintenance.

The 3RW40 series features integrated bypass contacts, adjustable ramp functions, and built-in motor protection, making it an energy-efficient and space-saving solution for industrial automation systems

Key Features

• Siemens SIRIUS 3RW40 series soft starter
• Part Number: 3RW4037-1TB04
• 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: 24 V AC/DC
• Soft start and soft stop functionality
• Integrated bypass contacts for reduced heat loss
• Adjustable ramp-up time and starting voltage
• Built-in motor overload protection
• Compact design for panel space optimization
• Screw terminal connections for secure installation
• Complies with IEC 60947-4-2 standards