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Confirm PSTX300-600-70 and 1SFA898114R7000, the control-supply marking, display and terminal/accessory scope. Protective and communication accessories are separate unless quoted.
Technical specifications for PSTX300-600-70-1SFA898114R7000
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Manufacturer:ABB
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Product Category:General Automation
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Spare Part Number:PSTX300-600-70-1SFA898114R7000
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Weight:15.35 kg
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Tariff Code:8537101190
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Type designation:PSTX300-600-70
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Product ID:1SFA898114R7000
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Product family:PSTX softstarters
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Rated operational current, IEC in-line:300 A
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Operational voltage:208-600 V AC
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Control supply voltage:100-250 V AC
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Control supply frequency:50/60 Hz
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Control arrangement:Three-phase controlled soft start and stop
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Starting/stopping modes:Voltage ramp or torque ramp
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Bypass:Built-in
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IEC motor power at 380-400 V, in-line:160 kW
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IEC motor power at 500 V, in-line:200 kW
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IEC rated-current setting range:90-300 A
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IEC inside-delta rated motor current:515 A under the specified arrangement
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Integrated motor protection:Electronic overload protection
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Overload trip classes:10A, 10, 20 and 30
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Relay status outputs:RUN, TOR and Event
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Operator interface:Detachable graphical display
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Application functions:Current limit, kickstart, motor heating and pump cleaning
Information
Overview
Downloads
Applications / Compatibility
Product Precautions
- ABB PSTX300-600-70-1SFA898114R7000 controls the motor starting and stopping ramp before its internal bypass carries running current. Select the circuit from motor current, starting duty and installation conditions.
Product type: Three-phase motor softstarter
IEC in-line current: 300 A
Supply selection: 208-600 V AC main / 100-250 V AC control
IEC in-line current: 300 A
Supply selection: 208-600 V AC main / 100-250 V AC control
ABB PSTX300-600-70-1SFA898114R7000 is selected for a 208-600 V AC main circuit and a separate 100-250 V AC, 50/60 Hz control supply. Its IEC normal-start rating is 300 A for an in-line connection; the corresponding inside-delta selection is 515 A. These connection-specific figures must be applied with the appropriate motor wiring and starting duty, rather than treated as interchangeable current settings.
PSTX supports voltage-ramp and torque-controlled starting and stopping. Torque control shapes the motor response during acceleration or deceleration, while current and overload settings must match the motor and load. Starting time, starting frequency and normal- or heavy-duty selection affect the suitable softstarter size and protection configuration.
The internal bypass engages at full speed to reduce operating losses and heat generation. The platform also provides electronic motor-overload protection, a graphical operator interface and built-in Modbus RTU for monitoring and control. The bypass function does not provide electrical isolation; short-circuit protection and coordination remain part of the complete motor-starter circuit.
PSTX supports voltage-ramp and torque-controlled starting and stopping. Torque control shapes the motor response during acceleration or deceleration, while current and overload settings must match the motor and load. Starting time, starting frequency and normal- or heavy-duty selection affect the suitable softstarter size and protection configuration.
The internal bypass engages at full speed to reduce operating losses and heat generation. The platform also provides electronic motor-overload protection, a graphical operator interface and built-in Modbus RTU for monitoring and control. The bypass function does not provide electrical isolation; short-circuit protection and coordination remain part of the complete motor-starter circuit.
Controller platform reference: PSTX motor starting platform. Select by motor current and starting duty.
Technical downloads for ABB PSTX300-600-70-1SFA898114R7000: original manufacturer reference pages and an Apter Power installation and commissioning guide.
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Official PSTX Technical Ratings Excerpt
Original manufacturer excerpt - PDF, 3 pages. PSTX overview and exact IEC/UL rating tables. -
ABB PSTX300-600-70 installation guide
Prepared by Apter Power - PDF, 5 pages. Identity, interfaces, installation hold points, commissioning and service checks.
The technical reference preserves selected manufacturer pages. The installation guide is compiled by Apter Power for preparation and review; apply the original operating procedures and site controls during work.
System and supply context: PSTX300-600-70 is an open softstarter for an engineered motor circuit. Protective devices, line isolation, cabling and communication accessories are included only when itemized.
Platform applications: The following uses describe PSTX starting and stopping functions. Select ratings and settings for the actual motor, load, duty and connection arrangement.
Platform applications: The following uses describe PSTX starting and stopping functions. Select ratings and settings for the actual motor, load, duty and connection arrangement.
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Centrifugal pump starting
Use the appropriate torque or voltage ramp to manage pump acceleration and deceleration. Validate the hydraulic response and the selected protection settings. -
Compressor acceleration
Match current limit and ramp settings to compressor starting requirements. Confirm motor thermal duty and acceleration under the real load. -
Conveyor startup
Ramp the motor into motion to reduce abrupt mechanical loading. Check starting time and the selected trip class against the conveyor inertia. -
Motor-circuit diagnostics
Use the graphical interface and RUN, TOR and Event signals to supervise the start sequence. Integrate status with the plant circuit and fault-response design.
Prepare ABB PSTX300-600-70-1SFA898114R7000 using the installed-system design, controlled isolation and the applicable manufacturer procedure.
Match both supply circuits
Use the 208-600 V AC main-voltage version with its 100-250 V AC control supply. Keep line and control terminals clearly identified.
Select the connection arrangement
Use the correct in-line or inside-delta wiring diagram. Set motor current according to that arrangement and the motor nameplate.
Assess the starting duty
Check acceleration, starts per hour, ambient conditions and load inertia. A 300 A rating alone does not establish a suitable heavy-duty selection.
Coordinate protective devices
Select the required short-circuit protection and isolation devices. The internal bypass and electronic overload protection serve different functions.
Control unexpected motion
Isolate main and control power before wiring or service. Account for remote commands and automatic sequences before releasing the motor.
Verify ramps and trips
Set and test the chosen ramp, current limit and overload class with controlled motor operation before returning the process to service.
Alternative Names
1SFA898114R7000
Technical notes
Connection relationship: The 300 A IEC in-line and 515 A inside-delta figures describe different circuit arrangements. Match the wiring diagram and motor-current setting before energizing.
Protection boundary: Built-in bypass and electronic overload protection do not replace maintenance isolation or coordinated short-circuit protection.
Technical reference: ABB PSTX Softstarters catalog, 1SFC132011C0201; PSTX Installation and commissioning manual, 1SFC132081M0201 Rev. O.
FAQ View All FAQ
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What are the separate main and control voltage ranges of PSTX300-600-70-1SFA898114R7000?The 600-version main circuit is rated for 208-600 V AC. The -70 control supply is 100-250 V AC at 50/60 Hz; it is a separate circuit and must be connected to the designated terminals.
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Is PSTX300-600-70-1SFA898114R7000 rated for a 690 V main supply?No. This exact -600 model is the 208-600 V AC version. A rating table for a -690 variant must not be transferred to product 1SFA898114R7000.
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How does the built-in bypass operate in PSTX300-600-70-1SFA898114R7000?PSTX uses controlled semiconductor starting and stopping, with an internal bypass for running operation. The bypass reduces running losses but is not a maintenance isolator.
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Which motor-current figures apply to in-line and inside-delta use of PSTX300-600-70-1SFA898114R7000?The IEC ratings table gives 300 A for the in-line arrangement and 515 A for the specified inside-delta arrangement. Select wiring and current settings for the actual circuit rather than using the higher figure on an in-line installation.
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What IEC motor power is associated with PSTX300-600-70-1SFA898114R7000 at 400 V?The specified normal-start IEC in-line selection is 160 kW at 380-400 V. Verify motor current, starting duty and application conditions before relying on the nominal power selection.
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Which overload tripping classes can be selected on PSTX300-600-70-1SFA898114R7000?The integrated electronic overload protection supports classes 10A, 10, 20 and 30. Choose the class from the motor and starting duty, then verify the protection settings during commissioning.
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Can PSTX300-600-70-1SFA898114R7000 control stopping through a torque ramp?The PSTX platform provides voltage-ramp or torque-ramp soft start and stop. Select the appropriate function and confirm the real load response, especially for a pump application.
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Which relay states can be integrated from PSTX300-600-70-1SFA898114R7000?The available relay signals include RUN, TOR and Event. Wire and configure these outputs to the plant control design and check their observed states during the start, running and fault sequences.
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