Abstract: The present invention relates to a device for protecting electrical equipment (23), comprising: a first branch (21) for limiting current including a current source; a second conduction branch (22) mounted parallel to the limitation branch (21), the impedance of the conduction branch (22) being less than or equal to 10% of the impedance of the limitation branch (21); a control unit (3) for switching the operating mode of the device between: a first operating mode, in which the electric current circulates through the limitation branch (21) without circulating in the conduction branch (22); and a second operating mode, in which the electric current circulates through the limitation and conduction branches (21, 22).