Description

The ABB PSTX470-600-70 is a PSTX series softstarter for medium- and large-size three-phase motors.

The unit has a rated operational current of 470 A in an in-line connection. Its main operating voltage range is 208 to 600 VAC.

The rated control supply voltage is 100 to 250 VAC at 50/60 Hz. The control circuit voltage is 24 VDC.

The PSTX470-600-70 provides three-phase controlled soft starting and stopping through voltage or torque ramps. An integrated bypass reduces losses during normal motor operation.

The unit also supports inside-delta connection, with a rated operational current of 814 A. Motor ratings reach 315 kW at 500 V in-line and 600 kW at 500 V inside delta.

Built-in functions include electronic overload protection, current limiting, kick start, motor heating, pump cleaning, jog, braking, sequence start, diagnostics, and emergency/fire pump mode.

Features

• PSTX series softstarter

• 470 A rated operational current in-line

• 814 A rated operational current inside delta

• 208 to 600 VAC main operating voltage

• 100 to 250 VAC control supply

• 24 VDC control circuit voltage

• Integrated bypass

• Three-phase motor control

• Soft start by voltage ramp

• Soft start by torque control

• Soft stop by voltage ramp

• Soft stop by torque control

• Built-in electronic overload protection

• Adjustable current limit

• Kick start function

• Motor heating

• Pump cleaning

• Jog forward and reverse

• Dynamic brake

• Standstill brake

• Sequence start

• Emergency mode

• Integrated diagnostics

• Detachable full graphic display

• Built-in Modbus RTU communication

• Optional industrial Ethernet and fieldbus communication

Applications

• Pumps

• Fans and blowers

• Compressors

• Conveyors

• Industrial process machinery

• Medium- and large-size three-phase motors

• Water and wastewater systems

• HVAC systems

• Material handling equipment

• High-power motor starting applications

Technical Specifications

ABB identifies the exact model as PSTX470-600-70, Product ID 1SFA898116R7000, rated for 470 A and 208 to 600 VAC.

Motor Ratings

The exact ABB technical data gives 470 A in-line and 814 A inside delta.

Control and Protection Functions

Protection Functions

• Bypass open protection

• Current imbalance protection

• Current underload protection

• Dual overload protection

• Earth fault / ground fault protection

• Electronic overload protection

• Fieldbus failure protection

• HMI failure protection

• Locked rotor protection

• Overvoltage protection

• Phase reversal protection

• PT100 connection

• PTC connection

• Too-long start protection

• Undervoltage protection

• Voltage imbalance protection

ABB lists these protection and motor-control functions as standard capabilities of the PSTX470-600-70.

Communication

The PSTX platform provides built-in Modbus RTU and supports additional protocols through optional Anybus or fieldbus modules.

Mechanical Data

ABB provides exact product dimensions of 361 x 493 x 282 mm and a net weight of 25 kg.

Packaging Data

The ABB product sheet lists the package as 470 x 381 x 650 mm with a gross weight of 29 kg.

Environmental

Installation & Commissioning

• Verify the complete Product ID 1SFA898116R7000 before replacement.

• Confirm motor current and supply voltage against the selected connection method.

• Distinguish between in-line and inside-delta ratings during sizing.

• Verify the 100 to 250 VAC control supply before energizing the unit.

• Confirm the 24 VDC control circuit wiring.

• Set motor overload and current-limit parameters for the connected motor.

• Verify start, stop, bypass, and protection functions during commissioning.

• Confirm fieldbus settings where optional communication modules are installed.

Replacement Notes

• Match the exact PSTX470-600-70 type designation.

• Confirm in-line or inside-delta connection before replacement.

• Preserve motor protection, ramp, communication, and control settings.

• Optional fieldbus modules should be checked separately from the base softstarter.