Series QJR Mine-used Flameproof and Intrinsic Safety Soft and Magnetic Starter for Motor gathers soft starter and magnetic starter for motor into a whole, not only having the features of soft starter but also new comprehensive protections for motor. Its core microprocessor control unit is imported product. With advanced microprocessor, electric power and electronic technology, Series QJR magnetic starter has functions of soft start, soft stop, etc., greatly eliminates mechanical and electrical shock and extends the equipment's life. It is an ideal product to replace traditional start controllers like hydraulic coupler and other starters for motor. The comprehensive protection unit for motor utilizes special anti-interference measures and has excellent protection functions of overload inversing time limit, over-current, phase failure and leakage locking with accurate and reliable action and corresponding display.

Series QJR magnetic starter has the characteristics of advanced technology, reasonable structure, safe and reliable operation, power break-off, convenient maintenance, long operating life. It can be used for soft start and bump stop of three-phase squirrel-cage motor which has the rated current less than 400A in power supply system of AC 50Hz and 1140V or 660V. It also provides comprehensive protections for circuit and motor and can be used for sequential interlock control of multiple devices of same model. And under the stop state, it can change rotation direction of the motor by changeover switch.