Power tool having a tool fitting for exchangeably receiving a tool, the power tool comprising: a power tool housing, a spindle rotatably mounted in the power tool housing and having a drive end and a receiving end, wherein the drive end is connected to a drive for rotating the spindle about an axis of rotation, and the receiving end is coupled to the tool fitting, a latching device mounted in the power tool housing and having a latching element with a latching end for interacting with the spindle and an actuating end, wherein the latching element is reversibly movable between a release position and a locking position, wherein the latching end of the latching element has at least one form-fitting means, and at least one mating form-fitting means is provided, wherein, in the release position of the latching element, the at least one form-fitting means of the latching element is disengaged from the at least one mating form-fitting means to allow a rotary movement of the spindle, and, in the locking position of the latching element, the at least one form-fitting means of the latching element is engaged with the at least one mating form-fitting means to prevent a rotary movement of the spindle and to allow an exchange of the tool from the tool fitting, wherein an electrically insulating mounting device is provided, wherein the spindle has the at least one mating form-fitting means, characterized in that the electrically insulating mounting device is provided for mounting the latching element in the power tool housing in order to electrically insulate the latching element with respect to the power tool housing, and in that the mounting device is a sleeve through which the latching element extends and which mounts the latching element in a linearly movable manner. a power tool housing, a spindle rotatably mounted in the power tool housing and having a drive end and a receiving end, wherein the drive end is connected to a drive for rotating the spindle about an axis of rotation, and the receiving end is coupled to the tool fitting, a latching device mounted in the power tool housing and having a latching element with a latching end for interacting with the spindle and an actuating end, wherein the latching element is reversibly movable between a release position and a locking position, wherein the latching end of the latching element has at least one form-fitting means, and at least one mating form-fitting means is provided, wherein, in the release position of the latching element, the at least one form-fitting means of the latching element is disengaged from the at least one mating form-fitting means to allow a rotary movement of the spindle, and, in the locking position of the latching element, the at least one form-fitting means of the latching element is engaged with the at least one mating form-fitting means to prevent a rotary movement of the spindle and to allow an exchange of the tool from the tool fitting, wherein an electrically insulating mounting device is provided, wherein the spindle has the at least one mating form-fitting means, characterized in that the electrically insulating mounting device is provided for mounting the latching element in the power tool housing in order to electrically insulate the latching element with respect to the power tool housing, and in that the mounting device is a sleeve through which the latching element extends and which mounts the latching element in a linearly movable manner.