abb softstarter PSTX1250-600-70 pstx (600v) range 1200 amp

Why Choose the ABB PSTX1250-600-70 Softstarter?

The ABB PSTX1250-600-70 is a premium heavy-duty softstarter engineered for advanced motor starting, stopping and protection in demanding industrial applications. As part of the intelligent ABB PSTX softstarter series, it delivers precise control for large three-phase motors while reducing electrical stress, minimising mechanical wear and improving operational reliability.

Designed for critical process industries, the PSTX1250-600-70 combines sophisticated torque control, integrated bypass functionality and comprehensive motor protection within a robust industrial platform. Its advanced control algorithms help extend equipment lifespan, reduce downtime and improve overall process efficiency in modern automation systems.

With a rated operational current of 1250 A and support for 208–600 V AC three-phase systems, this ABB softstarter is ideal for large pumps, compressors, conveyors, fans and heavy industrial machinery. The detachable full graphic display, built-in communication capabilities and advanced diagnostics simplify commissioning, monitoring and maintenance in industrial environments.

Key Advantages

• Advanced soft starting and stopping control for large industrial motors.
• 1250 A operational current suitable for critical heavy-duty applications.
• 208–600 V AC three-phase compatibility.
• Integrated bypass contactor improves energy efficiency and reduces heat losses.
• Comprehensive built-in motor protection and diagnostics.
• Integrated Modbus RTU with optional major fieldbus protocol support.
• Advanced torque control and pump cleaning functionality.

Key Features

• ABB PSTX advanced softstarter range.
• 1250 A rated operational current.
• 208–600 V AC operating voltage range.
• Integrated electronic overload protection.
• Built-in bypass for reduced energy consumption.
• Voltage ramp and torque ramp start methods.
• Detachable IP66 / Type 4X graphic keypad.
• Integrated Modbus RTU communication interface.
• Support for Profinet, Profibus, Ethernet/IP, Modbus TCP and other protocols.
• Functions including kickstart, braking, sequence start, motor heating and emergency mode.

Technical Specifications

• Manufacturer: ABB
• Series: PSTX Softstarters
• Model: PSTX1250-600-70
• Product ID: 1SFA898121R7000
• Product type: Softstarter
• Rated operational current: 1250 A
• Operational voltage: 208–600 V AC
• Control supply voltage: 100–250 V AC
• Control circuit voltage: 24 V DC
• Frequency: 50 / 60 Hz
• Inline motor power at 400 V: 710 kW
• Inline motor power at 500 V: 880 kW
• Inside delta motor power at 400 V: 1200 kW
• Inside delta operational current: 2160 A
• Protection rating: IP00
• Mounting type: Panel mounting
• Dimensions (H × W × D): approx. 565 × 435 × 367 mm
• Weight: approx. 63.3 kg

Advanced Soft Starting for High-Power Industrial Systems

The ABB PSTX series uses intelligent voltage and torque regulation to deliver smooth motor acceleration and deceleration while limiting inrush current and reducing mechanical stress. This improves operational reliability, minimises maintenance requirements and extends the service life of motors and driven systems.

The PSTX1250-600-70 includes advanced diagnostic and protection functions such as overload protection, current limiting, braking, motor heating, sequence start and emergency mode. Integrated communication capabilities allow seamless integration into PLC, SCADA and industrial automation systems for improved monitoring and process control.

Typical Applications

• Industrial pumps and water treatment systems.
• Large compressors and process equipment.
• Heavy-duty conveyor systems.
• Industrial fans and ventilation systems.
• Mining and quarrying operations.
• Large-scale OEM automation systems.

Trusted by Heavy Industry Worldwide

ABB PSTX softstarters are trusted globally by industrial engineers and automation specialists for delivering advanced motor control, dependable operation and reduced maintenance in demanding process applications.