MOTORS - tinamics

SIRIUS 3RW Soft Starters

3RW30, 3RW40 for

Standard

Applications

The Ideal Soft Starter for Every Application

SIRIUS 3RW soft starters are a

cost-effective alternative to

using direct or wye-delta

starters for starting three-phase

motors. They avoid undesirable

side effects such as mechanical

bumps in the machine and

mechanics or voltage drops in

the mains supply. The soft start

in control cabinets can be

implemented in almost any

application in a simple and

practical way with our complete

soft starter range.

SIRIUS 3RW Soft

Starters

3RW44 for High-

Feature

Applications

Software

Soft Starter ES

Win-Soft Starter

PCS 7 block library

SIRIUS 3RW30 for Standard Applications

Belt slip on heater blowers or a sudden buildup of water pressure in washing installations are only two of the many problems that can occur when motors generate too much power on starting. With the SIRIUS 3RW30 from 1.5 kW to 55 kW (at 400 V) you can easily avoid such problems. And the best of it all is: It is also possible to switch straight from direct to soft start because SIRIUS 3RW30 is the only soft starter in the world that offers identical sizes in a family of devices.

Advantages at a glance

Soft start

Stepless starting

Uniform connection system with screw or spring-
loaded terminals

Space-saving clear cabinet design thanks to its
small and compact construction

Integral bypass

Reduction of current peaks

Relief of the power supply network

Reduction of the mechanical load in the drive

Simple and fast startup and maintenance

SIRIUS 3RW40 for Standard Applications

SIRIUS 3RW40 is the star among our standard soft starters. Thanks to its innovative control method, it is not just the only 2-phase-controlled soft starter in the world for use in the power range up to 250 kW (at 400V) – respectively 300 hp (at 460V) – because of its especially compact design, it ensures a space-saving, clear layout in the control cabinet. It is therefore more than a mere functionally expanded addition to our 2-phase-controlled series of SIRIUS 3RW30/31 soft starters.

The new 3RW40 soft starters in the lower power range from 5.5 - 55 kW (with 400 V) in sizes S0 to S3 expand the performance spectrum of the 3RW40 soft starters. They represent the compact and price-attractive alternative to start-delta starters.

Advantages at a glance

Uniform connecting system with screw or spring-loaded terminals

Space-saving, clear layout in the control cabinet thanks to small, compact design

Integrated bridging (bypass)

Inherent protection and protection against motor overload without additional wiring

Optional thermistor motor protection

Avoidance of peak inrush current thanks to adjustable current limitation

Simple and fast commissioning

Certified according to ATEX standards with sizes S0 - S12

3RW44 for High-Feature Applications

A compact design for maximum functionality

Thanks to its outstanding functions, the SIRIUS 3RW44 all-round talent handles difficult start-up and deceleration processes in a simple and, above all, gentle manner. With its innovative torque control system, it can be used for drives with a power output up to 710 kW at 400 V – respectively 950 hp at 460 V – in an inline circuit or up to 1200 kW at 400 V – respectively 1700 hp at 460 V – in an inside-delta circuit. Designed for simple handling, the functions are exceptionally easy to use.