HomeResourcesBlogABB PSTX Soft Starter

ABB PSTX Soft Starter

June, 2017 | Lindsey Shepard

The PSTX combines many years of research and product development with extensive knowledge of application-specific requirements and needs. The PSTX is ABB’s latest advancement in motor control and protection and adds new functionality with increased reliability to any motor starting application.


With ABB’s softstarters current peaks are eliminated and the starting current is reduced significantly. The load and voltage protections keep your motor protected from load and network irregularities. More features that will improve the overall reliability of the motor are three types of current limit and earth fault protection, amongst others.


The built-in bypass will reduce both energy consumption and heat generation while running motors at full speed. It saves both time spent on installation, space inside the panels, and it reduces the cost of extra cooling equipment. ABB’s softstarters also come with HMI’s that are easy to learn, improving the efficiency of the softstarters once they are in use.


ABB’s softstarters will reduce mechanical wear and tear and increase the productivity of your applications. With torque control damage to pump systems from problems like water hammering can be completely avoided. The continuous operation of applications can also be increased by features like jog with slow speed, pump cleaning and limp mode, which allows your application to do more.

PSTX Main benefits:

Secure motor reliability
Improve installation efficiency
Increase application productivity.

PSTX Main features:

  • Three-phase controlled
  • Operational voltage: 208-690 V AC
  • Wide Rated control supply voltage: 100-250 V, 50/60 Hz
  • Rated operational current: 30…1250 A (inside delta: 2160 A)
  • Coated circuit boards
  • Torque control for excellent control of pumps
  • Three programmable digital inputs and start and stop
  • Three programmable output signal relays
  • Choose between 15 different measurements for analog out
  • Clear markings on the front for easy installation and handling
  • Extension I/O for extra inputs and outputs
  • Keyhole mounting for quick installation
  • Built-in Modbus and Anybus for other protocols
  • Customizable display for important status information
  • Application assistant for fast and easy set-up
  • Detachable HMI for easy panel door mounting
  • Large Graphical Display
  • USB connection


Softstarters: the complete range

Controlling pumps: PSTX range

The PSTX range of softstarters is now available for purchase on the newly redesigned Ramcoi.com. Register for your online shopping account today!