Siemens SIRIUS 3RW Soft Starters

Siemens SIRIUS 3RW soft starters range from 3.6 A to 1,280 A and from 1.5 kW to 315 kW at the listed voltages. Stoklink ships worldwide from Turkey and quotes project volumes on request.

What's in this range

• SIRIUS 3RW30 and 3RW40: basic and standard starters for fixed-speed motors, for example 15 kW at 32 A and 55 kW at 106 A.
• SIRIUS 3RW50, 3RW52 and 3RW55: high-feature starters with more control and diagnostics, up to 470 A and above.
• 3ZS1 and 3RW accessories: covers, terminals and other parts for the 3RW range.

How to choose

• Rated current at 200 to 480 V or higher voltage ranges. Check the voltage code in the MLFB.
• Series: 3RW30 for simple starts, 3RW40 for standard, 3RW50 to 3RW55 for demanding or networked use.
• Inside-delta or in-line connection, which changes the current the starter must handle.
• Communication via PROFINET or other modules.

FAQ

What does 3RW5515-1HA14 tell me?

The MLFB identifies the series, the current size and the control voltage version. This one is a 3RW55 for 25 A at 200 to 480 V.

Can a 3RW starter run in inside-delta connection?

Some series support it, which lets the starter be sized smaller than the motor current. Check the series manual before specifying.

Do you ship Siemens soft starters abroad?

Stoklink ships worldwide from Turkey on EXW terms. Lead time depends on distributor stock, and project quantities are quoted on request.