Online soft starters provide smooth and controlled startup for 3-phase motors using SCR-based (thyristor) direct connection — no external AC contactor required, simplest wiring of all soft starter types. Reduces inrush current, prevents power surges, and eliminates mechanical shock on motor and load during startup.
Built-in protection includes overload, under-voltage, phase failure, overheat, and short-circuit. RS485 Modbus communication supported for remote monitoring and PLC/SCADA integration.
Key Features
- No external contactor required — SCR direct connection, compact installation
- Smooth start and soft stop — adjustable start time 0–30s
- Full motor protection — overload, phase failure, overheat, short-circuit
- RS485 Modbus — remote monitoring and PLC/SCADA integration
- Wide voltage range — 220V / 380V / 440V / 480V / 660V / 690V
- Power range — 5.5kW to 800kW, custom up to 1000kW
Applications
Suitable for water pumps, well pumps, irrigation systems, fans, blowers, conveyor systems, compressors, and general industrial motor applications.
| Parameter | Specification |
|---|---|
| Input Voltage | 220V/380V/440V/480V/660V/690V (Three-phase) |
| Rated Power | 5.5kW – 800kW (custom up to 1000kW) |
| Start Method | Soft start / Soft stop |
| Start Time | Adjustable 0–30s |
| Ambient Temperature | -20°C to +60°C |
| Protection Features | Overload, under-voltage, phase failure, overheat, short-circuit |
| Control Options | Local switch (R1) / Remote start (R2) |
