Bypass soft starters reduce heat generation and extend SCR service life by automatically switching to direct AC line operation after motor startup — bypassing the SCR thyristors during continuous running. External bypass contactor required, supplied by customer.
Built-in protection includes overload, under-voltage, phase failure, overheat, and short-circuit. RS485 Modbus supported for remote monitoring and PLC/SCADA integration.
Key Features
- External bypass contactor required — switches to direct AC after startup, reduces SCR heat
- Smooth start and soft stop — adjustable start time 0–60s
- 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 1000kW
Applications
Suitable for continuous-duty motors on pumps, fans, conveyors, HVAC systems, and compressors where SCR heat reduction and extended component life are priorities. Complete low voltage bypass soft starter packages with external bypass contactor and control wiring available on request.
| Parameter | Specification |
|---|---|
| Input Voltage | 220V/380V/440V/480V/660V/690V (Three-phase) |
| Rated Power | 5.5kW – 1000kW |
| Start Method | Soft start / Soft stop |
| Start Time | Adjustable 0–60s |
| Ambient Temperature | -10°C to +60°C |
| Protection Features | Overload, under-voltage, phase failure, overheat, short-circuit |
| Control Options | Local switch (R1) / Remote start (R2) |
| External Contactor | Yes — external bypass contactor required, supplied by customer |
