Product Overview
The GE PSTX370-600-70 softstarter is a robust industrial automation module engineered for medium to large three-phase motors. With a rated operational current of 370 A and a voltage range of 208...600 V AC, it delivers reliable soft starting and stopping through either voltage or torque ramps. The built-in bypass reduces energy consumption and simplifies installation, making it a preferred choice for demanding applications.
Key Technical Specifications
| Parameter |
Value |
| Rated Operational Current |
370 A |
| Rated Operational Voltage |
208...600 V AC |
| Control Supply Voltage |
100...250 V AC |
| Control Circuit Voltage |
24 V DC |
| Frequency |
50/60 Hz |
| Ramp Time |
1...120 s |
| Starting Capacity |
4xIe for 10 s |
| Analog Outputs |
0...10 V, 0...20 mA, 4...20 mA |
| Degree of Protection |
IP00 (main terminals) |
| Net Weight |
15.5 kg |
Advanced Protection and Control
The PSTX370-600-70 integrates comprehensive protection functions including electronic overload, earth fault, phase reversal, and locked rotor protection. It offers multiple control modes such as current limit, kickstart, and pump cleaning, ensuring optimal motor performance. The detachable graphic display with IP66 rating provides clear diagnostics and easy configuration.
Communication and Integration
This softstarter supports a wide range of fieldbus protocols including Modbus RTU, Profinet, EtherNet/IP, and EtherCAT. Whether you need simple hardwired control or advanced network integration, the PSTX370-600-70 adapts seamlessly to your existing automation architecture.
Real-World Applications
Typical applications include pumps, fans, compressors, and conveyors. For example, in a water treatment plant, the PSTX370-600-70 ensures smooth pump starts, reducing mechanical stress and preventing water hammer. In conveyor systems, it provides controlled acceleration, protecting both the motor and the load.
Installation and Maintenance
Installation is straightforward with bar-type main terminals and a compact footprint (258 mm width, 470 mm height, 279 mm depth). The built-in bypass simplifies wiring and reduces heat generation. Regular inspection of terminal connections and cleaning of the enclosure are recommended to maintain reliability. The operating temperature range of -25...+60 °C allows installation in most industrial environments.
Selection Guide
When selecting a softstarter, verify the motor's full-load current and supply voltage to ensure compatibility. The PSTX370-600-70 is suitable for motors up to 200 kW at 400 V in-line connection. For inside-delta configurations, it supports up to 640 A. PLC Source PRO offers this genuine GE softstarter with full technical support and fast delivery.