A motor control apparatus for controlling driving of a multi-phase electric motor , the motor control apparatus comprising: a multi-phase inverter circuit including arms, each arm of the multi-phase inverter circuit includes a half bridge, the multi-phase inverter circuit is configured to drive the multi-phase electric motor for each of a plurality of phases; a motor current shutoff unit inserted between the multi-phase inverter circuit and the multi-phase electric motor to shut off a current for each of the plurality of phases; a redundant arm unit including one or more half bridges whose number is less than the number of the plurality of phases of the multi-phase inverter circuit ; an abnormal arm detection unit configured to detect an abnormality in each of the plurality of phases of the multi-phase inverter circuit ; and an abnormality control unit configured to control the motor current shutoff unit to shut off connection between an abnormal half bridge and the multi-phase electric motor when the abnormal arm detection unit detects the abnormal half bridge, and to control the connection selecting unit to connect at least one of the one or more half bridges of the redundant arm unit to a winding of the multi-phase electric motor , the winding being shut off by the motor current shutoff unit , wherein the motor current shutoff unit includes a switch unit inserted between each of outputs of the multi-phase inverter circuit and each of the windings of the multi-phase electric motor , individually, the switch unit includes two field-effect transistors connected in series with each other such that directions of parasitic diodes are opposite to each other, characterized by a connection selecting unit configured to change which one of windings of the multi-phase electric motor is to be connected to the one or more half bridges of the redundant arm unit . a multi-phase inverter circuit including arms, each arm of the multi-phase inverter circuit includes a half bridge, the multi-phase inverter circuit is configured to drive the multi-phase electric motor for each of a plurality of phases; a motor current shutoff unit inserted between the multi-phase inverter circuit and the multi-phase electric motor to shut off a current for each of the plurality of phases; a redundant arm unit including one or more half bridges whose number is less than the number of the plurality of phases of the multi-phase inverter circuit ; an abnormal arm detection unit configured to detect an abnormality in each of the plurality of phases of the multi-phase inverter circuit ; and an abnormality control unit configured to control the motor current shutoff unit to shut off connection between an abnormal half bridge and the multi-phase electric motor when the abnormal arm detection unit detects the abnormal half bridge, and to control the connection selecting unit to connect at least one of the one or more half bridges of the redundant arm unit to a winding of the multi-phase electric motor , the winding being shut off by the motor current shutoff unit , wherein the motor current shutoff unit includes a switch unit inserted between each of outputs of the multi-phase inverter circuit and each of the windings of the multi-phase electric motor , individually, the switch unit includes two field-effect transistors connected in series with each other such that directions of parasitic diodes are opposite to each other, characterized by a connection selecting unit configured to change which one of windings of the multi-phase electric motor is to be connected to the one or more half bridges of the redundant arm unit . <EOS>