An electrical connecting device adapted to be connected to a female connector component via a pair of to-be-connected terminals, said device comprising: a pair of connecting terminals; a ferrite member having a pair of through-holes adapted for passing therethrough respectively said pair of connecting terminals to connect electrically to said pair of to-be-connected terminals; a male connector component having a container part that is adapted to hold the connecting terminals and the ferrite member, and a lock part having a tapered part protruding toward the inside of the container part, the tapered part being engaged with a shoulder of the ferrite member contained in the container part; and a cover element that is fitted to the male connector component in such a way as to sandwich the connecting terminals and the ferrite member between the cover element and the male connector component while covering an upper opening of the container part into which the connecting terminals and the ferrite member are inserted, the cover element including, as a peripheral wall extending downward in such a way as to cover the outer peripheral wall of the male connector component, a regulating part regulating a movement of the lock part in a direction in which an engagement between the lock part and the shoulder of the ferrite member is released so that the shoulder of the ferrite member is held while being pressed toward the inside of the container part by means of the tapered part, wherein the peripheral wall of the cover element has, on its inner side, a convex part that contacts the male connector component so as to press the lock part in a direction in which the lock part is engaged with the shoulder of the ferrite member when the cover element is fitted to the male connector component. a pair of connecting terminals; a ferrite member having a pair of through-holes adapted for passing therethrough respectively said pair of connecting terminals to connect electrically to said pair of to-be-connected terminals; a male connector component having a container part that is adapted to hold the connecting terminals and the ferrite member, and a lock part having a tapered part protruding toward the inside of the container part, the tapered part being engaged with a shoulder of the ferrite member contained in the container part; and a cover element that is fitted to the male connector component in such a way as to sandwich the connecting terminals and the ferrite member between the cover element and the male connector component while covering an upper opening of the container part into which the connecting terminals and the ferrite member are inserted, the cover element including, as a peripheral wall extending downward in such a way as to cover the outer peripheral wall of the male connector component, a regulating part regulating a movement of the lock part in a direction in which an engagement between the lock part and the shoulder of the ferrite member is released so that the shoulder of the ferrite member is held while being pressed toward the inside of the container part by means of the tapered part, wherein the peripheral wall of the cover element has, on its inner side, a convex part that contacts the male connector component so as to press the lock part in a direction in which the lock part is engaged with the shoulder of the ferrite member when the cover element is fitted to the male connector component.