SIRIUS Soft Starter – 3RW4028-1BB14

The Siemens SIRIUS 3RW4028-1BB14 Soft Starter ensures gentle motor startup, reducing wear and extending equipment life. Designed for 18.5kW motors at 400V, it operates within 200–480V AC main voltage and supports 110–230V AC/DC control voltage. With a 38A rated current, it efficiently controls motor acceleration and deceleration, minimizing electrical stress. The compact S0 size and screw terminals allow for easy installation, making it ideal for industrial applications.

Specification:

• Model: Siemens SIRIUS 3RW4028-1BB14

• Rated Current: 38A

• Motor Power: 18.5 kW (at 400V)

• Main Voltage: 200–480V AC

• Control Voltage: 110–230V AC/DC

• Connection Type: Screw Terminals

• Mounting Size: S0

• Net Weight: 0.709 kg

• Dimensions: 154 × 180 × 58 mm

• Country of Origin: Czech Republic

• Compliance: RoHS, WEEE