ABB PSTX300-600-70 Softstarter 300A 208-600V w/ Bypass

PSTX300-600-70 – Softstarter for Heavy-Duty Motors

• Product ID: 1SFA898114R7000
• ABB Type Designation: PSTX300-600-70
• Global Commercial Alias: PSTX300-600-70
• Rated Operational Current: 300 A (inline) / 515 A (inside delta)
• Operating Voltage: 208 … 600 V AC
• Control Supply: 100 … 250 V AC, 50/60 Hz
• Built‑in Bypass: saves energy and simplifies installation
• Communication: Modbus RTU + optional Anybus (Profinet, Ethernet/IP, etc.)
• Protection: electronic overload, phase loss, voltage imbalance, ground fault, and more
• Display: detachable full graphic, IP66 & outdoor rated

Product Description

• The PSTX300-600-70 is a three‑phase softstarter from ABB’s PSTX series.
• It controls motor start/stop via voltage or torque ramp.
• Rated for 300 A inline (up to 515 A inside delta).
• Ideal for pumps, fans, compressors, and conveyors.
• Built‑in bypass reduces heat and cuts energy waste.
• Includes torque control, current limit, kickstart, and pump cleaning.
• Supports jog, braking, stand‑still brake, and emergency/fire pump mode.
• Detachable IP66 graphic display for easy local monitoring.
• Fieldbus ready: Modbus RTU built‑in, plus optional Anybus modules.
• Complete solution for 30…1250 A inline or 52…2160 A inside delta.

Technical Specifications (MECE structured)

• Brand & Model
  • Brand: ABB
  • Model: PSTX300-600-70
  • Product ID: 1SFA898114R7000
• Electrical Ratings
  • Rated Voltage: 208 … 600 V AC
  • Control Voltage: 100 … 250 V AC, 50/60 Hz
  • Rated Current (inline): 300 A
  • Rated Current (inside delta): 515 A
  • Service Factor: 100%
  • Starting Capacity: 4 × Ie for 10 s
• Performance & Control
  • Ramp Time: 1 … 120 s
  • Initial Voltage: 30 … 99%
  • Current Limit: 1.5 … 7.5 × Ie
  • Analog Output: 0…10 V, 0…20 mA, 4…20 mA
  • Torque Control, Voltage Ramp, Soft Stop
• Environment & Mechanical
  • Operating Temp: –25 … +60 °C
  • Storage Temp: –40 … +70 °C
  • Protection Degree: IP00 (main terminals)
  • Display IP66 (outdoor rated)
  • Dimensions: 258 × 470 × 279 mm
  • Net Weight: 15.5 kg
• Protection & Diagnostics
  • Overload, underload, phase loss, voltage imbalance
  • Earth fault, locked rotor, over/under voltage
  • PT‑100, PTC, and electronic overload
  • Event log, real‑time clock, thyristor runtime
• Compliance & Certificates
  • CE, CQC, DNV, CCC
  • RoHS, REACH, TSCA compliant
  • ETIM 9: EC000640
  • eClass V11.0: 27370907

Installation & Commissioning

• Mounting: panel mount; main terminals are copper bars.
• Wiring: main circuit hole Ø10.2 mm; control circuit 2.5 mm².
• Torque: 25 N·m (main circuit).
• Quick Start Guide and Installation Manual included.
• Auto phase sequence detection simplifies hook‑up.

Maintenance & Service Convenience

• Detachable display for local diagnosis without opening panel.
• Event log and diagnostic LEDs (Ready, Run, Protection, Fault).
• Fieldbus failure & HMI failure alarms included.
• Thyristor runtime measurement predicts maintenance needs.

Compatibility & Communication

• Built‑in Modbus RTU (standard).
• Optional Anybus modules: Profinet, EtherNet/IP, Modbus TCP, EtherCAT, DeviceNet, CANopen, Profibus, BACnet.
• Hardwired I/O: Start/Stop/Reset + 3 programmable digital inputs.
• External adapter and fieldbus plug also supported.
• Compatible with all major PLC brands via optional gateways.

Applications & Suitable Devices

• Typical Motors: three‑phase induction motors from 30…1250 A inline.
• Pumps – soft start reduces water hammer.
• Fans – smooth acceleration lowers belt stress.
• Compressors – current limit protects mains.
• Conveyors – torque control for heavy loads.
• Emergency/Fire pump mode keeps critical systems running.

Expert Review

• “Built‑in bypass and torque control set this softstarter apart.”
• “The IP66 display is a lifesaver for outdoor or wash‑down areas.”
• “With 4×Ie starting capacity, it handles even high‑inertia loads.”
• “The broad communication options make it future‑proof for any plant.”

Manager‘s Insight

• “Reduces unscheduled downtime with advanced diagnostics and event log.”
• “Energy‑saving bypass and motor heating protection cut operational costs.”
• “Easy integration with existing Modbus networks saves engineering time.”

Frequently Asked Questions (FAQ)

• Question: What is the maximum motor power this softstarter can handle?
  • Answer: Inline: 160 kW at 400 V; inside delta: 257 kW at 400 V.
• Question: Does it have built‑in overload protection?
  • Answer: Yes, the electronic overload is integrated and fully adjustable.
• Question: Can I use it with a 600 V system?
  • Answer: Yes, rated operational voltage is 208…600 V AC.
• Question: Is the display removable?
  • Answer: Yes, it detaches for remote mounting and has IP66 rating.
• Question: What communication protocols are supported without extra modules?
  • Answer: Modbus RTU is built‑in; others via optional Anybus modules.
• Question: How do I connect it inside delta?
  • Answer: Use the built‑in switch for inside delta connection.

Experience‑based Tips & Selection Guide

• Tip 1: For high‑inertia fans, enable the kickstart function to break static friction.
• Tip 2: Use the pump cleaning routine to prevent clogging in dirty water pumps.
• Tip 3: Set the current limit to 3.5×Ie for most conveyor applications.
• Selection guide:
  • Inline: choose PSTX300 for motors up to 160 kW (400 V).
  • Inside delta: up to 257 kW (400 V) – use the built‑in delta switch.
  • For 600 V: check the horsepower ratings (300 HP at 600 V).
  • Consider ambient: operates from –25 °C to +60 °C; IP66 display for harsh environments.

Delivery & Warranty

• Shipping: 12‑24 hours dispatch via FedEx, UPS, or DHL.
• Warranty: 12 months against manufacturing defects.
• Package: 1 unit per box, dimensions 352×379×564 mm, gross weight 18.5 kg.

Contact & Support

• Sales Inquiries: sales@powergearx.com
• WhatsApp: +86 18030005825

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