The utility model discloses a current foldback circuit has solved the too complicated technical problem of current foldback circuit device structure among the current reactive power compensator, the utility model discloses intelligence current foldback circuit, include that binary channels operational amplifier and two voltage ratios are than integrated circuit, binary channels operational amplifier's positive going input end is connected with a current -limiting resistor, binary channels operational amplifier's output is connected with two the 2nd current -limiting resistor, one the 2nd current -limiting resistor and the positive going input end connection positive threshold voltage module of this pair voltage ratio than integrated circuit are connected than integrated circuit's reverse input end to two voltage ratios, another pair voltage ratio connects another the 2nd current -limiting resistor than integrated circuit's positive going input end and burden threshold voltage module is connected than integrated circuit's reverse input end to this pair voltage ratio.