ABB PSTB1050-600-70 1050A Soft Starter

Buy ABB PSTB1050-600-70 1050A high-performance heavy-duty soft starter designed for large industrial motors requiring controlled starting and stopping. Engineered for reliability in demanding environments, this model supports up to 1050A operational current and is ideal for applications where reducing mechanical stress and electrical inrush current is critical.

Built with advanced torque control technology, the PSTB series ensures smooth motor acceleration and deceleration, minimizing wear on mechanical components such as gearboxes, belts, and couplings. By limiting starting current, it also helps prevent voltage dips in the power supply network, improving overall system stability.

The PSTB1050-600-70 operates in voltage ranges up to 600V and is suitable for heavy industrial sectors including mining, cement plants, water treatment facilities, oil & gas, and large manufacturing operations. Its robust design allows continuous performance under high-load conditions while maintaining energy efficiency.

This soft starter features integrated motor protection functions such as overload protection, phase loss detection, phase imbalance monitoring, and overcurrent protection. The built-in bypass functionality reduces heat generation and power loss during normal operation, enhancing system efficiency and extending product lifespan.

Equipped with an intuitive control interface and communication capabilities, the PSTB1050-600-70 can be seamlessly integrated into modern automation systems. It supports monitoring and diagnostics, enabling predictive maintenance and reducing unexpected downtime.

Key Advantages:

Rated operational current: 1050A
Voltage range: Up to 600V
Advanced torque control for smooth starting and stopping
Reduced inrush current and mechanical stress
Integrated motor protection features
Built-in bypass for energy efficiency
Designed for heavy-duty industrial applications
Reliable performance in demanding environments

The ABB PSTB1050-600-70 1050A Soft Starter is the ideal solution for industries that demand safe motor starting, long equipment life, and stable electrical performance.

Technical Specifications

General

Model: PSTB1050-600-70
Manufacturer: ABB
Product Type: Soft Starter (Heavy-Duty Industrial)
Intended Use: Controlled motor starting and stopping to reduce electrical stress and mechanical wear

Electrical Ratings

Rated Operational Current (Ie): 1050 A
Rated Voltage (Ue): Up to 600 V AC
Control Power Supply: Typically 110-240 V AC/DC (varies by configuration)
Frequency: 50/60 Hz

Performance

Reduced Starting Current: Yes
Adjustable Starting/Stopping Profiles: Yes
Electronic Torque Control: Yes
Inrush Current Limitation: Yes
Voltage Ramp Control: Yes
Bypass/Contactor Bypass Function: Integrated (reduces heat & losses during run mode)

Motor Protection Functions

Overload protection
Phase loss detection
Phase imbalance monitoring
Overcurrent protection
Stall protection
Built-in thermal protection logic

Control & Communication

User Interface: Digital display with setup/feedback
Control Inputs: Start/Stop, external interlocks
Outputs: Status/fault relay outputs
Communication Support: Optional fieldbus modules
Remote Monitoring: Supports diagnostics and service monitoring

Mechanical Features

Mounting: Panel / DIN Rail (adapter frame depending on size)
Construction: Rugged industrial enclosure
Cooling: Air-cooled
Serviceability: Modular replaceable parts

Environmental

Operating Temperature: Standard industrial range (commonly -25°C to +60°C)
Storage Temperature: Typical industrial range
Humidity: Designed for industrial environments
Protection Class: IP20 (common – check specific variant)
Certifications: CE, UL/IEC compliance (region dependent)

Dimensions & Weight

Height: Engineering-class size (consult datasheet)
Width: Mid to high industrial range
Depth: Panel mount footprint
Weight: Heavy-duty class robust internal components

Typical Applications

Pumps and compressors
Fans and blowers
Conveyor and material handling systems
Crushers and mills
HVAC large motor control
Water & wastewater treatment
Mining and process industries