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Detailed information for: PSTX250-600-70

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General Information

  • Global Commercial Alias:
  • Extended Product Type:
  • Product ID:
  • ABB Type Designation:
  • EAN:
  • Catalog Description:
    PSTX250-600-70 Softstarter
  • Long Description:
    The softstarter PSTX250-600-70 has a rated maximum operational current of 250 A with an operating voltage span from 208...600 V AC. The rated control voltage is between 100...250 V AC at 50/60 Hz. PSTX features a three-phase control soft start and stop through a voltage or a torque ramp. It has built-in bypass for easy installation and energy saving. A RUN, TOR and Event signal is available from relay outputs in NO (normally open state). The PSTX has functions such as current limit, kickstart, analog output, EOL, motor heating and pump cleaning. PSTX also features features jog, braking, stand-still brake, diagnostics, sequence start and emergency/fire pump mode as standard.To interact with PSTX, it has a detachable full graphic display with IP66 and 4x outdoor rating. There are four ways to communicate with PSTX. It can be done by hardwire inputs Start/Stop/Reset of fault, and by three programmable digital inputs. Another popular option is the built-in Fieldbus communication Modbus RTU and incl optional ANYBUS modules with every major protocol such as for example Profinet, Profibus, Modbus TCP, Ethernet IP and others. Another way to communicate with PSTX is to use an external adaptor and a Fieldbus plug. PSTX is the complete alternative for any motor starting application. It’s suitable for medium to large-sized three-phase motors with nominal currents from 30...1250 A inline connection or 52...2160 A inside delta connection. Typical applications are, for example, pumps, fans, compressors, and conveyors.


  • Minimum Order Quantity:
    1 piece
  • Customs Tariff Number:

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  • Product Net Width:
    258 mm
  • Product Net Height:
    470 mm
  • Product Net Depth / Length:
    279 mm
  • Product Net Weight:
    15.5 kg


  • Rated Operational Voltage:
    208 ... 600 V AC
  • Rated Control Supply Voltage (Us):
    100 ... 250 V AC
  • Rated Control Circuit Voltage (Uc):
    24 V DC
  • Rated Frequency (f):
    50/60 Hz
    Main Circuit 50 / 60 Hz
  • Rated Operational Power - In-Line Connection (Pe):
    (230 V) 75 kW
    (400 V) 132 kW
    (500 V) 160 kW
  • Rated Operational Current - In-Line Connection (Ie):
    250 A
  • Rated Operational Power - Inside Delta Connection:
    at 230 V 132 kW
    at 400 V 220 kW
    at 500 V 295 kW
  • Rated Operational Current - Inside Delta Connection:
    430 A
  • Service Factor Percentage:
    100 %
  • Overload Protection:
    Built-in electronic overload protection
  • Integrated Electronic Overload:
  • Adjustable Rated Motor Current Ie:
    30 ... 100 %
  • Starting Capacity at Maximum Rated Current Ie:
    4xIe for 10s
  • Ramp Time:
    1 ... 120 second [unit of time]
  • Initial Voltage During Start:
    10 ... 99 %
  • Step Down Voltage Special Ramp:
    100 ... 10 %
  • Current Limit Function:
    1.5 ... 7.5 xle
  • Switch for Inside Delta Connection:
  • Run Signal Relay:
  • By-pass Signal Relay:
  • Fault Signal Relay:
  • Overload Signal Relay:
  • Analog Outputs:
    0…10 V, 0…20 mA, 4…20 mA
  • Signal Indication Ready to Start/Standby ON (LED):
  • Signal Indication Running R (LED):
  • Signal Indication Protection (LED):
  • Signal Indication Fault (LED):
  • Communication:
    Modbus-RTU; Modbus-TCP; Ethernet-IP; EtherCAT; DeviceNet; CANopen; Profibus; Profinet; BACnet-IP; BACnet-MSTP
  • Degree of Protection:
  • Terminal Type:
    Main Circuit: Bars
  • Connecting Capacity Main Circuit:
    Hole Diameter 10.2 mm
  • Connecting Capacity Control Circuit:
    Rigid 1 x 2.5 mm²
  • Connecting Capacity Supply Circuit:
    Rigid 1 x 2.5 mm²
  • Tightening Torque:
    Main Circuit 25 N·m
  • Product Main Type:
  • Function:
    Auto phase sequence detection
    Automatic restart
    Current limit
    Current limit ramp
    Dual current limit
    Dynamic brake
    Electricity metering
    Electronic overload Time-to-cool
    Emergency mode
    Event log
    Full voltage start
    Jog with slow speed, forward and reverse
    Keypad password
    Kick start
    Limp mode with two-phase motor control if one set of thyristors is shorted
    Motor heating
    Pre-start function
    Pump cleaning
    Real time clock
    Sequence start
    Soft start with torque control
    Soft start with voltage ramp
    Soft stop with torque control
    Soft stop with voltage ramp
    Stand still brake
    Start reverse (external contactors)
    Thyristor runtime measurement
    Torque limit
    Voltage sags detection
  • Protection Function:
    Bypass open protection; Current imbalance protection; Current underload protection; Dual overload (separate overload for start and run); Earth fault protection / ground fault protection; Electronic overload protection, EOL; Extension IO failure protection; Fieldbus failure protection; HMI failure protection; Locked rotor protection; Max number of starts/hour; Over voltage protection; Phase reversal protection; Power factor underload protection; PT-100 connection; PTC connection; Too long current limit protection; Too long start time protection; Under voltage protection; User defined protection; Voltage imbalance protection
  • Warning Details:
    Current imbalance warning; Current underload warning; Electronic overload Time-to-trip; EOL warning; Faulty fan warning; Locked rotor warning; Motor runtime limit warning; Over voltage warning; Phase loss warning (for standby); Power factor underload warning; Short circuit warning (for Limp mode); THD(U) - Total Harmonic Distortion warning; Thyristor overload warning (SCR); Under voltage warning; Voltage imbalance warning

Technical UL/CSA

  • Maximum Operating Voltage UL/CSA:
    Main Circuit 600 V
  • Tightening Torque UL/CSA:
    Main Circuit 221.3


  • Ambient Air Temperature:
    Operation -25 ... +60 °C
    Storage -40 ... +70 °C
  • RoHS Status:
    Following EU Directive 2002/95/EC August 18, 2005 and amendment

Certificates and Declarations (Document Number)

Container Information

  • Package Level 1 Width:
    352 mm
  • Package Level 1 Depth / Length:
    379 mm
  • Package Level 1 Height:
    564 mm
  • Package Level 1 Gross Weight:
    18.5 kg
  • Package Level 1 EAN:
  • Package Level 1 Units:
    box 1 piece


  • Object Classification Code:
  • ETIM 4:
    EC002572 - Electronic motor control and protection device
  • ETIM 5:
    EC002572 - Electronic motor control and protection device
  • ETIM 6:
    EC002572 - Motor management device
  • eClass:
    V11.0 : 27370907
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