With advanced CPU control as its core technology, NJR2 series soft-starter is especially designed to control high-power thyristor modules and enable soft starting & stopping of (squirrel cage)three-phase AC asynchronous motors.It has optional protection functions such as overload, input phase loss, output phase loss, process over-current, process under-current, over-voltage and under-voltage.This product is mainly used with package control cabinet, where an AC contactor of corresponding specifications must be connected during the operation.