A Gentle Approach Is Always Best

Nowadays, three-phase motors represent the most favored type of drive concept. Direct starting or star-delta starting is, in many cases, not the best solution. Such methods often result in unpleasant side-effects such as mechanical impacts inside the machine or voltage dips in the power supply system.

3RW40 SIRIUS Soft Starter, 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 400 hp (at 575V) – 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.

Potentiometers on the front of the unit provide settings for current limit, starting voltage, and starting and stopping times of the voltage ramp.

Features :

• Frame sizes S0, S2 & S3 can handle up to 100 Amps (75 HP @ 575 VAC)
• Frame sizes S6 & S12 can handle up to 385 Amps (400 HP @ 575 VAC)
• Selectable Current Limiting
• Built in Overload Protection
• Compact ......only half the size of a comparable star-delta starter
• From the SIRIUS 3R modular system, combinable with SIRIUS contactors, circuit-breakers and overload relays
• Soft startup and run down with voltage ramp
• Setting through potentiometer
• Manufacturing program includes single-phase motors
• Communication-capable over AS-Interface bus in size S00
• Simple installation and startup
• Integrated bypass contact for minimizing power loss
• Two integrated auxiliary contacts in sizes S0, S2 and S3 ensure convenient control
• Two control voltage versions UC 24V and UC 110V to 230V
• Operating voltage from 200V to 575V at 50/60 Hz
• Operating temperature range from -25°C to +60°C

                        S0                                  S2                                       S3

3RW44 SIRIUS Soft Starter, with High Features

The Compact Soft Start (PSS03..25)

• Gives room for more products on a given mounting surface
• Easy to install. The device is snapped onto a DIN mounting rail
• Clear instructions are provided on the front
• Voltage range: 200-600VAC
• Control voltage 24-110V AC/DC and 110-480VAC
• Current ratings: 3, 12 and 25A
• Start ramp, Stop ramp and Initial Voltage included
• Built-in by-pass contact

The Flexible Soft Start (PSS18..300)

• Offers a solution possible to adapt to almost any application
• 2 connections possibilities, either in line with the motor or inside the motor delta. Can also be equipped with current limit.
• Easy to setup. With just three clearly labeled rotary switches on the front of the unit it is possible to adjust the softstarter for a wide range of applications
• Solid state electrical circuit. This ensures the highest reliability and reduces maintenance to a minimum, even in applications with frequent starts and stops
• Voltage range 208-690VAC
• Control voltage 110-120VAC and 220-240VAC
• Current ratings 18..300A (In Line) and 30..515A (Inside Delta), same unit can be used for both
• Start ramp, Stop ramp and Initial Voltage included
• Current limit function as an option
• Designed for continuous operation without by-pass

The Advanced Soft Start (PST30..1050)

• Advanced integrated protection
• Flexible bus communication system. By using the ABB FieldBusPlug (FBP), you can decide at any time which bus system to select within the ABB FBP range. The interface between the PST softstarter and the ABB FBP is always the same, independent of the size and delivery date
• LCD display: With 12 languages, a menu system similar to your mobile phone, pre-programmed application settings and automatic status and event logging, it couldn't be easier to set up and operate!
• Programmable signal relays: gives you several possibilities for signalling warnings, faults and other events. You can use these functions for two or three speed motors as well
• Integrated by-pass contactor. On the larger sizes (PSTB370..PSTB1050), there is an ABB AF contactor integrated. This gives you advantages in terms of cost saving, space saving and last but not least energy saving. With a by-pass contactor you can reduce the power losses during normal run by 90% or more.
• Wide main voltage range: 208-690VAC
• Wide control voltage range: 100-250VAC
• Current ratings 30 to 1050A (In Line) and 52 to 1810A (Inside Delta)
• Premium adjustable soft starting functions like start/stop ramp, kick start, jog, step down voltage and sequence starts.
• Current limit adjustable between 2-5 x Ie
• Prepared for fieldbus communication
• Motor overload protection. Select between class 10A, 10, 20 and 30
• Thermistor (PTC) protection of motor winding
• Real time clock, logging of last 20 events with time marking
• Locked rotor protection
• Motor underload protection
• Phase imbalance protection
• Phase reversal protection

IT Motor Starters

The Most Advanced Reduced Voltage Soft Starters

Compact, easy-to-program, easy-to-install, the new Intelligent Technologies (IT) line of reduced voltage Soft Starters is the most advanced available anywhere in the world.

Ranging from 12-850 amps and with 13 models in 4 frame sizes from 65-290mm, the new IT Soft Starters provide advanced functionality along with unsurpassed configuration flexibility for open, enclosed or motor control center applications.

IT Soft Starters are the most compact on the market today. IT Soft Starters are 30-90% smaller than competing soft starters.

Eaton Electrical's approach to the Intelligent Technologies product lines was based on extensive customer input. This included numerous interviews and a survey involving over 700 companies worldwide. The data compiled from this survey concludes that customers want a soft starter that combines low unit price, labor savings, reduced operating costs, and advanced functionality.

The result? The Intelligent Technologies Soft Starter by Eaton Electrical