Description
The ABB PSTX300-600-70 is a high-capacity soft starter designed for controlled starting and stopping of three-phase motors in industrial applications. It operates within a voltage range of 208 to 600 VAC and supports a rated current of up to 300 A for inline connection. This unit provides advanced motor control functions including torque ramping, current limiting, and integrated bypass operation.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
ABB |
| Category |
Industrial Automation and Controls |
| Part Number |
PSTX300-600-70 |
| Subcategory |
Soft Starters |
| Series |
PSTX |
| Product Code |
1SFA898114R7000 |
| Rated Operational Current |
300 A (Inline) |
| Rated Voltage |
208–600 VAC |
| Control Supply Voltage |
100–250 VAC |
| Frequency |
50/60 Hz |
| Motor Power Rating |
160 kW |
| Phase |
3 Phase |
| Protection Rating |
IP20 (Main Unit), IP66 (Display) |
| Communication Protocols |
Modbus RTU, Profinet, Profibus, EtherNet/IP, Modbus TCP |
| Functions |
Soft Start/Stop, Current Limit, Kickstart, Pump Cleaning, Diagnostics |
| Operating Temperature |
-25°C to +60°C |
| Mounting Type |
Panel Mount |
| Weight |
12.7 kg |
Information About PSTX300-600-70
The PSTX300-600-70 is part of ABB’s PSTX series of advanced soft starters developed for medium to large motor control applications. It features three-phase soft start and stop functionality using voltage or torque ramp methods to reduce mechanical stress and electrical peaks. The unit includes a built-in bypass system for improved efficiency and simplified installation, along with a detachable graphical display rated IP66 for outdoor and harsh environments. It supports multiple communication options including Modbus RTU and expandable fieldbus protocols such as Profinet, EtherNet/IP, and Profibus, making it suitable for integration into modern industrial automation systems.
Key Features:
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300 A rated operational current: Supports high-power motor applications in industrial environments.
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Wide voltage range 208–600 VAC: Compatible with various three-phase power systems.
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Built-in bypass contactor: Reduces energy losses and simplifies wiring and installation.
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Torque and voltage ramp control: Enables smooth motor start and stop to reduce mechanical stress.
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Advanced motor protection functions: Includes current limit, kickstart, motor heating, and diagnostics.
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Integrated communication options: Supports Modbus RTU and optional fieldbus protocols for system integration.
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Detachable IP66-rated display: Provides durable interface for configuration and monitoring in harsh conditions.
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Specialized application modes: Includes pump cleaning, braking, jog operation, and emergency/fire pump mode.
The PSTX300-600-70 delivers the reliability and precision required for controlled motor starting in industrial automation and motor control applications.
