Soft Starters

Soft Starters
Soft Starters
A soft starter is a device used to temporarily reduce load and torque during motor startup.

A motor typically draws inrush current up to 10 times higher than their running current during startup, and up to 3 times higher torque. This kind of mechanical stress dramatically reduces the motorís service life, and the large power draw can propagate to other equipment in the system. Soft starters are designed to eliminate these undesired side effects of motor startup.

Soft starters reduce starting torque by temporarily reducing voltage or current input, allowing the motor to accelerate smoothly. Soft starters are also able to control motor deceleration, reverse motor direction, and provide overload protection. They are an ideal alternative to drives where a more cost-effective, simple solution is required.

PSR Series Image
  • 208~600VAC Input
  • Up to 46.2 Normal Duty Amps
  • Up to 15 HP @ 230V
  • Up to 30 HP @ 460V
  • UL; cUL; CE Approvals
The PSR Sofstarter is compact and easily accessible for installation in places where space is limited. This series covers motor currents from 3 to 45 A. Further, the system concept includes MMS and the softstarters are available for remote control connection using the FieldBusPlug as an accessory. All sizes include a Run signal relay. With standard performance the PSR Softstarters handle ten starts per hour.
  • Open Type
  • Prepared for Fieldbus Communication
PSE Series Image
  • Wide Rated Operational Voltage 208 ~ 600 VAC
  • Wide Rated Control Supply Voltage 100 ~ 250 VAC
  • Coated Circuit Boards for Reliable Operation in Harsh Environment
  • Optional External Keypad, IP66
  • Torque Control for Excellent Control of Pumps
The PSE soft starter is the world's first compact soft starter with both built-in electronic overload for motor protection and torque control for an excellent control of pumps. The compact design with the most important functionality integrated provides a very efficient starting solution. The illuminated language neutral display and the four button keypad make it easy to take advantage of all the advanced functionality in the soft starter. The display will also provide all the necessary information both during ramping and continuous operation.
  • Motor Underload Protection to Detect Pumps Running Dry
  • Locked Rotor Protection, Detecting Jammed Pumps
  • Kick Start to Start Jammed Pumps or Conveyor Belts
S801+ Series Image
  • Adjustable torque control
  • Built-in overload protection
  • Adjustable kick start control
  • Built-in run bypass contactor
  • Programmable overload settings, 31Ė100% (3.2:1) of rated current for the unit
Eatonís S801+ line of reduced voltage soft starters is very compact, multifunctional, easy to install and easy to program. Designed to control acceleration and deceleration of three-phase motors, the line is available for current ranges from 11A all the way through 1000A applications, and is suitable for mounting in motor control centers or in enclosed control.
PSTX Series Image
  • Open Soft Starter
  • Keyhole Mounting
  • Three-Phase Controlled
  • Rated Operational Current: 30 to 1250 Amps
  • Coated Circuit Boards
Soft starters which control an advanced range of operational currents. A three-phase control yields a safe, gradual start to motors of currents both large and small.
S811+ Series Image
  • Ranging from 11 to 1000 amps,the S811+ provides an array of built-in features designed to address the needs of industrial and OEM customers
  • Severe-duty capable
  • Sophisticated pump algorithm
  • Communication ready-native Modbus RTU and QC Port with external Ethernet IP/Modbus TCP com modules
  • Advanced monitoring and protection capabilities
  • Engineered to industry standards ULT,CSAT,RoHS,IEC,CE,C-Tick,CSA elevator duty and CCC
  • Warnings/alarms available to avoid nuisance tripping
  • Streamlined menu structure for programming,easy installation,setup,maintenance and monitoring
  • KW and power factor measurement
  • Cloning feature
Compact,easy to program and easy to install,the S811+ line of soft starters is ideally suited for open,enclosed and motor control center applications.The S811+ provides an easy to use Digital Interface Module allowing users to modify control parameters,enable/disable protections,set communication variables,monitor system parameters such as line voltages and currents,and access the fault queue.
SSW05 Series Image
  • 220~460 VAC Input
  • Up to 85 Normal Duty Amps
  • Up to 30 HP @230V
  • Up to 60 HP @460V
  • UL; cUL; CE Approvals
The WEG SSW05 soft starter is a super compact, fully digital soft starter with a state of the art DSP controller. Its digital construction provides optimum operation, diagnostics capability, and full motor protection. Simplicity in set-up and operation is assured since all parameters and set up selections are made via dip switches and potentiometers. Status LEDs alert the user of the operational status of the SSW05. Simplicity, ease of set up, and the micro size assures quick and easy installation and operation.
  • Built-In Bypass Contacts
  • Built-In Overload Protection
  • DIN Rail Mounting
ADXL Series Image
  • Two-Phase Control During Motor Starting and Stopping Combined with Torque Control During Operation Reduces Thermal Power Dissipation
  • ADXL Soft Starters Have Integrated Functions to Protect the Motor and the Starter Itself
  • In Conditions Where Motor Operation has Priority Over Motor or Starter Failure, a Starter Input can be Provided to Override all the Protections/Alarm that would Otherwise Prevent Motor Startup
MCD200 Series Image
  • Contactor style design for easy selection, installation and commissioning
  • Extremely robust SCR design with heavy ratings as standard
  • Compact Soft Starter for motors up to 150 HP
  • Unlimited number of starts per hour
S801 Series Image
  • 200~600 or 200~690VAC Input
  • Up to 1000 Normal Duty Amps
  • Up to 400 HP @ 230V
  • Up to 800 HP @ 460V
  • UL; CSA; CE Approvals
The S801 Soft Starter is designed to be the smallest, most compact soft starter in the market today. With this small size, it can easily fit in place of existing soft starter designs, wye-delta starters or across the-line NEMA and IEC starters. This feature allows easy retrofits of existing Motor Control Centers or Enclosures and saves the expense of replacing existing structure or adding a new one to house a soft starter. The product is designed to work with 3-phase motors in a Delta (3-lead) configuration.
  • Open Type
  • Built-In Bypass Contactor
  • Built-In Overload Protection
  • Pump Control Options
  • Adjustable Ramp Times
  • Adjustable Torque Control
  • Reduced Wear on Belts, Gears, Chains, Clutches, Shafts and Bearings
  • Allows for Controlling the Inrush Current to the Motor
  • Reduced Water-hammer in Pumping Applications
  • Less Shock to Product on Connector Lines and Material Handling Gear
  • 24V DC Control Enhances Personnel and Equipment Safety
S751 Line of Reduced Voltage Soft Starters by Eaton Corporation is very compact, multi-functional, easy to install and easy to program. Designed to control acceleration and deceleration of 3-phase motors, the Line is available for current ranges from .25 to 27 amps. The S751 is suitable for mounting in motor control centers or in enclosed control (NEMA 1, 4, 4X and 12) applications.
The S751 is also designed to be a complete package combining the SCR devices, bypass contactor and overload in one, very compact package. The S751 comes complete with everything needed to set up and program the soft starter.
Designed to be the smallest, most compact soft starter in the world today, the S751 is designed to fit in place of your existing soft starter or across-the-line NEMA or IEC starter today. Designed to work with 3-phase motors from 200 - 600V AC, the S751 combines the overload and bypass contactor into one package for fast and easy installation. The unit also provides all necessary overload protection for the motor. The built-in bypass contactor ensures a minimal amount of heating internal to the enclosure. The unit provides for smooth starting and stopping of motors to reduce both mechanical and electrical shock to the system. Short circuit protection can be provided by fuses.
  • All-in-one Design Reduces Number of Components and Makes Installation Simpler and Faster
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