PSTX - Advanced Range Softstarter The PSTX series inverters are the ABB latest advancement in motor control and protection and adds new functionality with increased reliability to any motor starting application. The series offer a complete motor protection, built-in bypass and a lot of more technical features. Three-phase controlled Operational voltage 208 – 690 Vac Wide rated control supply voltage 100 – 250 V, 50/60 Hz PSTX rated operational current 30 to 370 A Both in-line and inside-delta connection Three types of current limit Complete control of pumps Graphical display with 14 languages for easy setup and operation Detachable keypad rated IP66 Coated circuit boards protecting from dust, moist and corrosive atmosphere Built-in bypass for saving energy and easy installation Built-in Modbus RTU for monitoring and control Support for all major communication protocols Analog output for measurement of current, voltage, power factor etc.