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Datasheet generated 2026-10-07
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Soft starter PSTX1050-600-70

ABB · Drives & Controllers · Soft Starters · Switzerland · abb.com
Part Number
PSTX1050-600-70  ·  HS 8537.10
Soft starter PSTX1050-600-70

ABB PSTX1050-600-70 — The soft starter PSTX1050-600-70 has a rated maximum operational current of 1050 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.

Technical Specifications

Manufacturer part number (MPN)PSTX1050-600-70
EAN / GTIN7320500510445
Sales unitpcs
Configuration OnlyNo
Country of OriginSweden
CriticalityNo
Lead Time0 day
NoteNo
Product Availability ClassOnly for warranty purposes. Not available for normal sales
Product Sales StatusActive
Storage Location4014
Product Net Width435 mm
Product Net Height515 mm
Product Net Depth / Length367 mm
Rated Operational Voltage208 ... 600 V AC
Rated Control Supply Voltage (U s )100 ... 250 V AC
Rated Control Circuit Voltage (U c )24 V DC
Rated Frequency (f)50/60 Hz; Main Circuit 50 / 60 Hz
Rated Operational Power - In-Line Connection (Pe)(230 V) 315 kW; (400 V) 560 kW; (500 V) 730 kW
Rated Operational Current - In-Line Connection (Ie)1050 A
Rated Operational Power - Inside Delta Connectionat 230 V 500 kW; at 400 V 1000 kW; at 500 V 1250 kW
Rated Operational Current - Inside Delta Connection1810 A
Service Factor Percentage100 %
Overload ProtectionBuilt-in electronic overload protection
Integrated Electronic OverloadYes
Starting Capacity at Maximum Rated Current Ie4xIe for 10s
Ramp Time1 ... 120 s
Initial Voltage During Start10 ... 99 %
Step Down Voltage Special Ramp100 ... 10 %
Current Limit Function1.5 ... 7.5 xle
Switch for Inside Delta ConnectionYes
Run Signal RelayYes
By-pass Signal RelayYes
Fault Signal RelayYes
Overload Signal RelayYes
Analog Outputs0…10 V, 0…20 mA, 4…20 mA
Signal Indication Ready to Start/Standby ON (LED)Green
Signal Indication Running R (LED)Green
Signal Indication Protection (LED)Yellow
Signal Indication Fault (LED)Red
CommunicationModbus-RTU; Modbus-TCP; Ethernet-IP; EtherCAT; DeviceNet; CANopen; Profibus; Profinet; BACnet-IP; BACnet-MSTP
Degree of Protectionacc. to IEC 60529, IEC 60947-1, EN 60529 Main Terminals IP00
Terminal TypeMain Circuit: Bars
Connecting Capacity Control CircuitRigid 1 x 2.5 mm²
Connecting Capacity Supply CircuitRigid 1 x 2.5
Tightening TorqueMain Circuit 45 N·m
Product Main TypePSTX1050
FunctionAuto 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 FunctionBypass 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 DetailsCurrent 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
Horsepower Rating UL/CSA(200 ... 208 V AC) Three Phase 400 Hp; (220 ... 240 V AC) Three Phase 450 Hp; (440 ... 480 V AC) Three Phase 900 Hp; (550 ... 600 V AC) Three Phase 1000 Hp
Maximum Operating Voltage UL/CSAMain Circuit 600 V
Tightening Torque UL/CSAMain Circuit 398.3
Ambient Air TemperatureOperation -25 ... +60 °C; Storage -40 ... +70 °C
ABB EcoSolutionsYes
ABB Site Meeting Group Waste To Landfill TargetUL 2799 Zero Waste To Landfill Validation available
EcoSolutions Profile1SFC100125C0367
End Of Life Disassembling Instructions1SFC132455M0201
Environmental Product Declaration - EPD1SFC132449; 1SFC132440
Extended Product LifetimeProduct Durability
Improved Energy Efficiency for CustomersProduct Efficiency - Product considered more energy-efficient compared to similar product on market or older products from the same line
Recyclability Rate of the Product acc. to EN45555Design for Closing Resource Loops - Standard EN45555 - 79.8 %
CQC CertificateCN: CQC2015010304830298 / SE: CQC2015010304830294
Declaration of Conformity - CCCCN: 2020980304001097 / SE: 2020980304001508
Declaration of Conformity - CE2CMT005209
DNV CertificateTAE000087N
EU Data Act Compliance Declaration1SFC132498M0201
Object Classification CodeQ
ETIM 7EC000640 - Soft starter
eClassV11.0 : 27370907
UNSPSC39121521
IDEA Granular Category Code (IGCC)4740 >> Soft starter

Properties

MOQ1

Cross-References

Attached Documents