Siemens SIRIUS 3RW3017-1BB04 Soft Starter, S00, 17 A, 200-480 V AC, 24 V AC/DC Control

The SIRIUS 3RW3017-1BB04 soft starter from Siemens delivers smooth motor ramp-up and ramp-down in a compact S00 frame, reducing mechanical stress and current peaks compared to direct-on-line starting. Its integrated bypass contacts minimize heat generation during continuous operation.

Highlights

• Voltage ramp starting for controlled acceleration
• Integrated bypass for energy-efficient operation
• Rated current 17 A at 40°C, suitable for motors up to 7.5 kW at 400 V
• Adjustable ramp-up and ramp-down times from 0 to 20 seconds
• Wide operating voltage range 200–480 V AC

In daily use

This soft starter is ideal for applications requiring gentle starting of three-phase motors, such as pumps, fans, and small conveyors. The 24 V AC/DC control supply allows integration into common control circuits. Screw terminals and DIN rail/screw mounting simplify installation.

Full specifications

• Device type: Soft starter
• Series: SIRIUS 3RW30
• Frame size: S00
• Rated operational current at 40°C: 17 A
• Operating voltage: 200–480 V AC
• Control supply voltage: 24 V AC/DC
• Rated power at 400 V: 7.5 kW
• Rated power at 230 V: 5.5 kW
• Number of phases: 3-phase
• Integrated bypass: Yes
• Integrated overload protection: No (external required)
• Adjustable ramp-up time: 0–20 s
• Adjustable ramp-down time: 0–20 s
• Starting method: Voltage ramp
• Connection type: Screw terminals
• Mounting type: DIN rail / screw mounting
• Degree of protection (front): IP20
• Ambient operating temperature: -25 to +60 °C

Final note

A reliable choice for reducing inrush currents and extending motor life in industrial environments.