SIRIUS soft starter S0 32 A-3RW4027-1BB04

Product Description

SIRIUS Soft Starter S0 32 A – 3RW4027-1BB04

The Siemens 3RW4027-1BB04 is a high-performance SIRIUS soft starter from the 3RW40 series, designed for smooth starting and stopping of three-phase induction motors up to 15 kW (400 V). It helps reduce starting current peaks, mechanical stress, and voltage dips, ensuring reliable and efficient motor operation in industrial applications.

This model belongs to the S0 frame size, making it suitable for compact control panel installations. It is widely used in pumps, fans, compressors, conveyors, HVAC systems, and general industrial machinery, where controlled acceleration and deceleration improves equipment life and system stability.

🔹 Key Features

• Siemens SIRIUS 3RW40 series soft starter
• Part Number: 3RW4027-1BB04
• Frame size: S0
• Rated current: 32 A (approx., temperature dependent)
• Motor power: Up to 15 kW at 400 V
• Supply voltage: 200–480 V AC, 3-phase
• Control voltage: 24 V AC/DC (variant dependent)
• Integrated bypass system for reduced heat loss after start-up
• Thyristor-based voltage ramp control for smooth acceleration
• Adjustable current limiting and soft stop function
• Built-in motor protection and diagnostics support
• Compact design for space-saving panel installation
• Screw terminal connection for secure wiring
• Complies with IEC 60947-4-2 standards