Description

The PSTX840-600-70 softstarter is an advanced motor control unit designed for precise, reliable, and energy-efficient motor starting. Engineered to handle up to 840 A at 208–600 V AC, it provides smooth acceleration and deceleration using three-phase voltage or torque control, reducing electrical stress and mechanical wear. Its built-in bypass ensures easier installation, reduced wiring effort, and improved system efficiency.

This soft starter includes a wide range of intelligent motor protection features—such as current limiting, EOL, motor heating, and pump cleaning—along with advanced functionalities like diagnostics, braking, jog, and emergency/fire pump mode. The PSTX840 offers flexible communication via Modbus RTU and optional ANYBUS modules supporting Profinet, Profibus, Ethernet/IP, and Modbus TCP. Its detachable IP66-rated graphic display enables easy configuration and real-time monitoring, even in harsh environments. For fully integrated installations, pair it with our industrial panel fabrication solutions for complete control and protection.

Key Specifications – Softstarter PSTX840-600-70

• Rated Operational Current: 840 A

• Operating Voltage Range: 208–600 V AC

• Control Voltage: 100–250 V AC, 50/60 Hz

• Control Type: Three-phase voltage or torque ramp

• Built-in Bypass: Yes (for reduced power loss)

• Communication: Modbus RTU, optional ANYBUS (Profinet, Profibus, Ethernet/IP, Modbus TCP)

• Display: Detachable full-graphic (IP66 / Type 4X)

• Key Features: Current limit, EOL, kickstart, motor heating, pump cleaning, braking, jog, diagnostics, sequence start, fire pump mode

• Mounting: Inline (30–1250 A) or inside delta (52–2160 A)

Highlights

• Smart and programmable soft starter and softstarter control for large industrial motors

• Built-in bypass enhances energy efficiency and minimizes wiring complexity

• Full suite of motor protection and diagnostics ensures operational reliability

• Multi-protocol communication for seamless integration with automation systems

• Detachable IP66-rated graphic display for intuitive setup and local monitoring

Typical Uses

• Industrial pumps, compressors, and fans

• HVAC and process control systems

• Conveyor systems and heavy machinery

• Fire pump and emergency motor control applications

Installation & Support

The PSTX840-600-70 is engineered for quick installation and flexible operation.

• Plug-and-play setup with built-in bypass

• Supports Modbus RTU and ANYBUS Fieldbus modules

• Includes complete wiring diagrams and configuration tools

• Supported by ABB’s local service centers and spare parts network