Brand:ABB PLC Item No.:PST85-600-70 Product Origin:Sweden (SE) Product Dimensions:390 x 186 x 270 mm Product Weight:10 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The ABB PST85-600-70 (1SFA894008R7000) is an 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 adjustable motor-starting functions with integrated electronic protection to support reliable operation in demanding industrial environments.
With an 85 A in-line rated operational current and a main circuit voltage range of 208–600 V AC, the PST85-600-70 is suitable for motor-driven equipment used in pumping stations, compressors, ventilation systems, conveyors, and automated manufacturing facilities.
During conventional direct-on-line starting, a motor can draw high inrush current and generate sudden mechanical torque. The PST85-600-70 helps manage these effects by gradually increasing the voltage supplied to the motor during startup. This reduces electrical and mechanical stress and supports smoother equipment operation.
Its adjustable current and starting parameters allow engineers to configure the unit according to different motor and load requirements. The integrated protection functions also help simplify motor-control system design.
For machine builders, automation system integrators, and industrial maintenance teams, the ABB PST85-600-70 provides a practical solution for improving motor-starting performance and supporting dependable equipment operation.
Technical Specifications
Parameter
Specification
Brand
ABB
Model
PST85-600-70
Order Number
1SFA894008R7000
Product Type
Soft Starter
Product Series
PST
Main Circuit Voltage
208–600 V AC
Control Supply Voltage
100–250 V AC
Rated Operational Current (In-Line)
85 A
Rated Frequency
50/60 Hz
Motor Type
Three-Phase Asynchronous Motor
Connection Type
In-Line / Inside Delta
Motor Protection
Integrated Electronic Overload Protection
Starting Function
Adjustable Soft Starting
Stopping Function
Controlled Soft Stopping
Current Limiting
Adjustable
Dimensions
390 × 186 × 270 mm
Weight
10 kg / 22.05 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
PST60-600-70
1SFA894006R7000
Soft Starter
PST72-600-70
1SFA894007R7000
Soft Starter
PST105-600-70
1SFA894009R7000
Soft Starter
PST142-600-70
1SFA894010R7000
Soft Starter
PST175-600-70
1SFA894011R7000
Soft Starter
Popular Related Models
Other ABB PST soft starters that may be relevant to industrial motor-control projects include:
ABB PST30-600-70 Soft Starter
ABB PST37-600-70 Soft Starter
ABB PST44-600-70 Soft Starter
ABB PST50-600-70 Soft Starter
ABB PST60-600-70 Soft Starter
ABB PST72-600-70 Soft Starter
ABB PST105-600-70 Soft Starter
ABB PST210-600-70 Soft Starter
ABB PST250-600-70 Soft Starter
ABB PST300-600-70 Soft Starter
Applications
The ABB PST85-600-70 1SFA894008R7000 Soft Starter is designed for controlled starting and stopping of three-phase asynchronous motors in industrial applications. With an 85 A rated operational current for in-line connection, it helps reduce starting current, mechanical shock, and stress on connected equipment.
This model is suitable for motor-driven systems that require smooth acceleration, reliable protection, and flexible integration into industrial control panels.
Typical applications include:
Water and wastewater 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.
Manufacturing machinery: Provides controlled motor starting for automated production lines.
HVAC installations: Supports reliable operation of compatible ventilation and air-conditioning motors.
Advantages and Key Features
1. Smooth Motor Starting and Stopping
The PST85-600-70 controls the voltage supplied to the motor during startup, helping reduce high inrush current and sudden torque changes. Controlled stopping also supports applications that require gradual deceleration.
2. 85 A In-Line Current Rating
Its 85 A rated operational current makes it suitable for a range of industrial motor-control applications involving medium-power three-phase motors.
3. Adjustable Current Limiting
The current limit function allows users to configure starting current according to the electrical capacity of the installation and the characteristics of the motor load.
4. Integrated Electronic Motor Protection
Built-in electronic overload protection helps monitor motor operating conditions and reduce the risk of damage caused by sustained overloads.
5. Flexible Connection Configuration
The PST series supports in-line and inside-delta motor connection arrangements, providing flexibility for compatible motor installations.
6. Wide Control Supply Range
The 100–250 V AC control supply range supports integration into different industrial control systems.
7. Practical Industrial Installation
Its compact construction combines motor-starting control and protection functions in one device, helping simplify control cabinet design and equipment integration.
Technical FAQs
Q1: What is the rated operational current of the ABB PST85-600-70?
The PST85-600-70 has a rated operational current of 85 A for in-line connection. Its inside-delta current rating should be selected according to the manufacturer's specifications and the actual motor connection.
Q2: What main circuit voltage does this soft starter support?
It is designed for three-phase motor applications with a main circuit voltage range of 208–600 V AC.
Q3: What is the control supply voltage range?
The control supply voltage range is 100–250 V AC at 50/60 Hz.
Q4: What type of motor can be connected to the PST85-600-70?
It is intended for three-phase asynchronous motors. The motor's rated voltage, current, power, and starting characteristics must be compatible with the soft starter.
Q5: Does the PST85-600-70 support inside-delta connection?
Yes. The PST series supports in-line and inside-delta connection configurations. The wiring arrangement and parameter settings must follow the applicable installation instructions.
Q6: Can the motor-current setting be adjusted?
Yes. The PST series provides adjustable motor-current settings. The configured value should correspond to the motor nameplate and the selected connection method.
Q7: Does the PST85-600-70 include overload protection?
Yes. It incorporates electronic motor overload protection to help protect the motor against sustained overload conditions.
Q8: What is the purpose of the current limit function?
The current limit function helps control the maximum current during motor acceleration. It can be adjusted to suit the electrical supply capacity and load characteristics.
Q9: What should be checked if the motor fails to start?
Check the main power supply, control supply, start command, motor wiring, external interlocks, protection status, and configured motor parameters. Review any active fault indication before restarting.
Q10: Why might the soft starter trip during acceleration?
Possible causes include excessive mechanical 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.
