1、 Scope of application
The QJR1 series 5.5-500kW motor soft starter uses a microcomputer as the core and an electronic high-power module as the actuator, suitable for motor control in various industries and working conditions without special requirements. This product was first tested and passed by the Home Low Hi Electrical Testing Center in 1998.
Due to the adoption of advanced design and manufacturing technology, it has the following advantages:
1. Compact structure and no noise;
2. Easy installation and operation;
3. Low starting current;
4. It has protection against phase failure, overload, short circuit, and overheating;
5. The price is extremely reasonable.

2、 Functional Features
1. Microcomputer fully automatic monitoring;
2. There is a dedicated secondary protection circuit with functions for phase failure, overload, and overheating protection;  
3. High level automatic water supply, remote control microcomputer interface;
4. It can be freely stopped or soft stopped, and the soft stop time can be set;
5. The product has a novel structure, small size, reliable performance, and easy installation and operation;
6. Energy saving operation throughout the entire process.  

3、 Working and environmental conditions
1. Power supply: three-phase 380V ± 10% 50Hz
2. Motor: three-phase AC asynchronous motor;
3. Starting frequency: less than 12 times per hour:
4. Environmental temperature:. 30 ℃ -55 ℃:
5. Relative humidity: maximum 90% (temperature at 20 ℃)

QJR1 series motor soft starter