abb softstarter PSTX45-690-70 pstx (690v) range 45 amp

Why Choose the ABB PSTX45-690-70 Softstarter?

The ABB PSTX45-690-70 is an advanced industrial softstarter designed to provide smooth motor starting, stopping and comprehensive protection for three-phase AC motors in demanding industrial environments. As part of the intelligent ABB PSTX softstarter series, this model combines precise motor control, integrated bypass functionality and advanced diagnostics within a compact and highly efficient platform.

Engineered for industrial automation and process applications, the PSTX45-690-70 reduces electrical inrush current and minimises mechanical stress on motors and driven equipment. Its advanced torque control, motor protection features and communication capabilities improve operational reliability while extending the service life of pumps, compressors, conveyors and industrial machinery.

With a rated operational current of 45 A and support for 208–690 V AC three-phase systems, this ABB softstarter is ideal for medium-duty industrial motors. The detachable full graphic display, integrated Modbus RTU communication and support for optional Anybus fieldbus modules simplify commissioning, diagnostics and operational monitoring in modern industrial automation systems.

Key Advantages

• Advanced soft starting and stopping control for industrial motors.
• 45 A operational current suitable for medium industrial applications.
• 208–690 V AC three-phase compatibility.
• Integrated built-in bypass improves efficiency and reduces heat losses.
• Comprehensive built-in motor protection and diagnostics.
• Integrated Modbus RTU with optional industrial communication support.
• Compact panel-mounted design for industrial automation systems.

Key Features

• ABB PSTX advanced softstarter series.
• 45 A rated operational current.
• 208–690 V AC operating voltage range.
• Integrated electronic overload protection.
• Built-in bypass for reduced energy consumption.
• Voltage ramp and torque ramp starting 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 pump cleaning.

Technical Specifications

• Manufacturer: ABB
• Series: PSTX Softstarters
• Model: PSTX45-690-70
• Product ID: 1SFA898205R7000
• Product type: Softstarter
• Rated operational current: 45 A
• Operational voltage: 208–690 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: 22 kW
• Inline motor power at 500 V: 25 kW
• Inline motor power at 690 V: 37 kW
• Inside delta motor power at 400 V: 37 kW
• Inside delta operational current: 76 A
• Protection rating: IP00
• Mounting type: Panel / wall mounting
• Dimensions (H × W × D): approx. 314 × 150 × 198 mm
• Weight: approx. 4.6 kg

Advanced Motor Starting for Industrial Applications

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

The PSTX45-690-70 includes advanced protection and monitoring features such as overload protection, current limiting, braking, motor heating, diagnostics 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.
• Compressors and process equipment.
• Conveyor systems and material handling.
• Industrial fans and ventilation systems.
• OEM machinery and automation systems.
• General industrial motor control applications.

Trusted by Industrial Engineers 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 industrial applications.