ABB PST44-600-70 22KW Soft Starter

Product Overview

The ABB PST44‑600‑70 Soft Starter is an industrial motor starting device designed for three-phase asynchronous motors. It provides smooth start and stop, reduces starting current, minimizes mechanical stress, and extends motor and equipment lifetime. This soft starter is widely used in pumps, fans, compressors, conveyors, and industrial production lines, enhancing safety and reliability.

Technical Specifications

• Model: PST44‑600‑70

• Type: Soft Starter

• Motor Power Rating: 22 kW (at 400 V)

• Rated Operational Current: 44 A

• Rated Voltage: 208–600 V AC, three-phase

• Control Method: Electronic voltage ramp start

• Start/Stop Mode: Smooth start and smooth stop

• Start Voltage Range: 30% – 70% adjustable

• Ramp Time (Start/Stop): 1–30 s adjustable

• Protection Functions: Overload, short circuit, phase loss, jam protection

• Communication Interfaces: Optional Modbus RTU / Profibus DP

• Operating Temperature: -20°C ~ 60°C

• Mounting Method: DIN rail or panel mounting

• Protection Class: IP20

• Compatible Motor Types: Three-phase asynchronous motors

Key Features & Advantages

• Smooth Start and Stop: Reduces mechanical stress and extends equipment lifetime

• Reduced Starting Current: Protects the motor and reduces load on the power network

• High Reliability: Industrial-grade design suitable for harsh environments

• Comprehensive Protection: Overload, short-circuit, phase loss, and jam protection

• Flexible Communication: Supports Modbus RTU and Profibus DP for remote monitoring and control

• Energy Efficient: Optimizes motor operation and reduces energy consumption

• Easy Installation and Maintenance: Modular design simplifies integration and service

Application Areas

• Industrial pumps and fans

• Compressors and refrigeration systems

• Conveyor and mechanical drives

• Chemical, pharmaceutical, and petrochemical production lines

• Power and energy management systems

• Water treatment and environmental control systems

Precautions

1. Ensure the supply voltage matches the soft starter rated voltage to prevent damage

2. Maintain good ventilation during installation to avoid overheating

3. Avoid touching internal components during operation to prevent electric shock or damage

4. Regularly inspect terminals and motor condition for stable operation

5. Only use compatible motors and accessories

6. Take protective measures in high humidity, dusty, or corrosive environments

7. Avoid frequent start/stop beyond design specifications to extend equipment life