A power tool, comprising: a motor serving as driving subject; and an overcurrent protection device for protecting the driving subject from overcurrent, the overcurrent protection device comprising: a drive current generation unit (13, 15) that is configured to generate a drive current for the driving subject; a current detector (Ra) arranged to detect the drive current for the driving subject; an overcurrent determination unit that is configured to determine whether or not the drive current detected by the current detector (Ra) is an overcurrent and outputs a determination signal (Sc) in accordance with the determination; and a control circuit that is configured to perform a computation including a control for switching the drive current generation unit (13, 15) between a drive current generation state and a drive current suspension state based on the determination signal (Sc) from the overcurrent determination unit, wherein the drive current generation unit (13, 15) is configured to generate the drive current in the drive current generation state, and the drive current generation unit (13, 15) is configured to stop generating the drive current in the drive current suspension state; characterized in that the power tool further comprises: a single reduction switch which is a transistor, wherein the transistor includes a base, connected to the overcurrent determination unit to receive the determination signal (Sc), and a collector, connected to the drive generation unit (13, 15) to output a switching signal (Sx), and wherein the transistor is configured to receive the determination signal (Sc) from the overcurrent determination unit without involving the control circuit and to directly switch the drive current generation unit (13, 15) to a reduced drive current generation state when the determination signal (Sc) indicates that the drive current is an overcurrent. a motor serving as driving subject; and an overcurrent protection device for protecting the driving subject from overcurrent, the overcurrent protection device comprising: a drive current generation unit (13, 15) that is configured to generate a drive current for the driving subject; a current detector (Ra) arranged to detect the drive current for the driving subject; an overcurrent determination unit that is configured to determine whether or not the drive current detected by the current detector (Ra) is an overcurrent and outputs a determination signal (Sc) in accordance with the determination; and a control circuit that is configured to perform a computation including a control for switching the drive current generation unit (13, 15) between a drive current generation state and a drive current suspension state based on the determination signal (Sc) from the overcurrent determination unit, wherein the drive current generation unit (13, 15) is configured to generate the drive current in the drive current generation state, and the drive current generation unit (13, 15) is configured to stop generating the drive current in the drive current suspension state; characterized in that the power tool further comprises: a single reduction switch which is a transistor, wherein the transistor includes a base, connected to the overcurrent determination unit to receive the determination signal (Sc), and a collector, connected to the drive generation unit (13, 15) to output a switching signal (Sx), and wherein the transistor is configured to receive the determination signal (Sc) from the overcurrent determination unit without involving the control circuit and to directly switch the drive current generation unit (13, 15) to a reduced drive current generation state when the determination signal (Sc) indicates that the drive current is an overcurrent. a drive current generation unit (13, 15) that is configured to generate a drive current for the driving subject; a current detector (Ra) arranged to detect the drive current for the driving subject; an overcurrent determination unit that is configured to determine whether or not the drive current detected by the current detector (Ra) is an overcurrent and outputs a determination signal (Sc) in accordance with the determination; and a control circuit that is configured to perform a computation including a control for switching the drive current generation unit (13, 15) between a drive current generation state and a drive current suspension state based on the determination signal (Sc) from the overcurrent determination unit, wherein the drive current generation unit (13, 15) is configured to generate the drive current in the drive current generation state, and the drive current generation unit (13, 15) is configured to stop generating the drive current in the drive current suspension state; characterized in that the power tool further comprises: a single reduction switch which is a transistor, wherein the transistor includes a base, connected to the overcurrent determination unit to receive the determination signal (Sc), and a collector, connected to the drive generation unit (13, 15) to output a switching signal (Sx), and wherein the transistor is configured to receive the determination signal (Sc) from the overcurrent determination unit without involving the control circuit and to directly switch the drive current generation unit (13, 15) to a reduced drive current generation state when the determination signal (Sc) indicates that the drive current is an overcurrent.