Introduction

The ABB PST60-600-70 (1SFA894006R7000) is an advanced industrial soft starter developed for controlling the starting and stopping of three-phase asynchronous motors. As part of ABB's PST soft starter family, it combines controlled motor acceleration, adjustable current limiting, and integrated electronic overload protection.

With a 60 A in-line rated operational current and a main circuit voltage range of 208–600 V AC, this model is suitable for motor-driven equipment used in pumping stations, compressors, ventilation systems, conveyors, and automated manufacturing facilities.

Unlike conventional direct-on-line starting, which applies full voltage to the motor immediately, the PST60-600-70 gradually controls the voltage during startup. This helps reduce electrical inrush current and sudden mechanical torque, supporting smoother equipment operation and reducing stress on connected components.

The soft starter also provides flexible motor-current adjustment, current limiting, and multiple signal relay functions for system monitoring. These features make it a practical choice for industrial control panels requiring dependable motor starting and flexible integration.

For equipment manufacturers, automation engineers, and industrial maintenance teams, the ABB PST60-600-70 offers a reliable solution for improving motor-starting performance and supporting efficient operation across different industrial applications.

Technical Specifications

Parameter	Specification
Brand	ABB
Model	PST60-600-70
Order Number	1SFA894006R7000
Product Type	Soft Starter
Product Series	PST
Main Circuit Voltage	208–600 V AC
Control Supply Voltage	100–250 V AC
Control Circuit Voltage	24 V DC
Rated Operational Current (In-Line)	60 A
Rated Operational Current (Inside Delta)	105 A
Motor Power (In-Line, 400 V)	30 kW
Motor Power (In-Line, 500 V)	37 kW
Motor Power (Inside Delta, 400 V)	55 kW
Motor Power (Inside Delta, 500 V)	75 kW
Rated Frequency	50/60 Hz
Adjustable Motor Current	30–115% of Ie
Current Limit Range	1.5–7 × Ie
Starting Capacity	3 × Ie for 15 seconds
Motor Protection	Integrated Electronic Overload Protection
Signal Relays	Run, Bypass, Fault, Overload
Connection Type	In-Line / Inside Delta
Dimensions	260 × 160 × 196 mm
Weight	5 kg / 11.02 lb

Recommended Related Models

The following ABB PST soft starters belong to the same product family and offer different current ratings for various motor-control requirements.

Model	Order Number	Product Type
PST30-600-70	1SFA894002R7000	Soft Starter
PST37-600-70	1SFA894003R7000	Soft Starter
PST44-600-70	1SFA894004R7000	Soft Starter
PST50-600-70	1SFA894005R7000	Soft Starter
PST72-600-70	1SFA894007R7000	Soft Starter

Popular Related Models

Other ABB PST soft starters suitable for different industrial motor-control requirements include:

ABB PST85-600-70 Soft Starter
ABB PST105-600-70 Soft Starter
ABB PST142-600-70 Soft Starter
ABB PST175-600-70 Soft Starter
ABB PST210-600-70 Soft Starter
ABB PST250-600-70 Soft Starter
ABB PST300-600-70 Soft Starter
ABB PSTB370-600-70 Soft Starter

Applications

The ABB PST60-600-70 1SFA894006R7000 Soft Starter is designed for controlled starting and stopping of three-phase asynchronous motors in industrial applications. With a rated operational current of 60 A for in-line connection, it helps reduce motor starting current, mechanical shock, and stress on connected equipment.

Its combination of adjustable starting parameters and integrated motor protection makes it suitable for a wide range of motor-driven systems.

Typical applications include:

Water pump systems: Helps reduce pressure fluctuations during pump startup and stopping.
Industrial fans and blowers: Provides controlled acceleration to protect fan assemblies and drive components.
Air compressors: Helps reduce mechanical stress during motor starting.
Conveyor systems: Supports smoother acceleration of conveyor belts and material-handling equipment.
Packaging machinery: Provides controlled motor starting in automated production lines.
HVAC installations: Supports reliable operation of compatible ventilation and air-conditioning motors.

Advantages and Key Features

1. Smooth Motor Starting

The PST60-600-70 gradually increases the voltage supplied to the motor during startup, helping reduce high inrush current and sudden torque changes.

2. Flexible Current Capacity

With a 60 A in-line rated operational current and support for inside-delta connection, this model can accommodate different motor-control configurations.

3. Adjustable Starting Parameters

Users can configure starting voltage, ramp time, and current limit settings to match the characteristics of different motors and loads.

4. Integrated Electronic Overload Protection

Built-in electronic overload protection helps monitor motor operating conditions and reduces the risk of damage caused by sustained overloads.

5. Multiple Control and Monitoring Functions

Run, bypass, fault, and overload signal relays support equipment status monitoring and integration with external control systems.

6. Flexible Control Supply

The 100–250 V AC control supply range supports integration into compatible industrial control panels. A 24 V DC control circuit is also available.

7. Compact Industrial Design

Its compact construction helps save installation space while combining motor-starting control and protection functions in one device.

Technical FAQs

Q1: What is the rated operational current of the ABB PST60-600-70?

The PST60-600-70 has a rated operational current of 60 A for in-line connection. Its rated operational current for inside-delta connection is 105 A.

Q2: What main circuit voltage does this soft starter support?

It supports a main circuit operating voltage range of 208–600 V AC, making it suitable for compatible three-phase motor applications.

Q3: What is the control supply voltage range?

The rated control supply voltage is 100–250 V AC at 50/60 Hz.

Q4: What motor power can the PST60-600-70 handle?

For in-line connection, the rated motor power is 30 kW at 400 V and 37 kW at 500 V. For inside-delta connection, the corresponding ratings are 55 kW at 400 V and 75 kW at 500 V.

Q5: Does the PST60-600-70 support 24 V DC control?

Yes. It supports a 24 V DC control circuit for integration into compatible industrial control systems.

Q6: What is the adjustable motor current range?

The adjustable rated motor current range is 30–115% of Ie. The setting should be configured according to the motor nameplate and the selected connection arrangement.

Q7: Does this model provide current limiting?

Yes. Its current limit function can be adjusted within a range of 1.5–7 × Ie, helping control motor starting current according to application requirements.

Q8: What is the starting capacity of the PST60-600-70?

The listed starting capacity is 3 × Ie for 15 seconds at the specified maximum rated current. Actual suitability depends on the motor, load, and starting conditions.

Q9: What should be checked if the motor does not start?

Check the incoming power supply, control supply, start command, motor wiring, external interlocks, protection status, and configured motor parameters. Review any fault indication before restarting.

Q10: Why might the soft starter trip during motor acceleration?

Possible causes include excessive load, incorrect motor-current settings, phase loss, abnormal supply conditions, or an unsuitable starting configuration. Check the fault indication and operating conditions to identify the cause.

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