High power connector, installable on a power electronic apparatus comprising a container, at least one power electronic circuit housed inside said container, and at least one cover for closing said container, wherein said connector comprises at least one electricity conductive element of substantially elongated conformation and provided with a first end portion electrically connectable to said power electronic circuit and with a second end portion provided with at least one electrical connection terminal, said conductive element being insertable inside a through opening made on said cover with said terminal facing outwards; wherein said connector comprises at least one locking element made of an electrically insulating material that can be coupled with said conductive element and configured to be fixable to the outer surface of said cover when said cover is fixed to said container, wherein said connector comprises coupling means between said conductive element and said locking element, said coupling means comprising at least one portion of said conductive element provided with an outer transverse profile of polygonal conformation and at least one portion of the inner surface of a housing seat of said locking element provided with an inner transverse profile of polygonal conformation, said outer transverse profile and said inner transverse profile being mutually complementary and adapted to be coupled to measure for the locking of said locking element in rotation on said conductive element, wherein said locking element comprises fixing means (9, 10) to said cover, characterized in that said fixing means (9, 10) comprising at least one portion projecting from the outer surface of said locking element and provided with at least one fixing hole, said fixing hole being positionable at a respective hole on said cover for fixing by means of screws or the like, and wherein said fixing hole is slot-shaped. wherein said connector comprises at least one electricity conductive element of substantially elongated conformation and provided with a first end portion electrically connectable to said power electronic circuit and with a second end portion provided with at least one electrical connection terminal, said conductive element being insertable inside a through opening made on said cover with said terminal facing outwards; wherein said connector comprises at least one locking element made of an electrically insulating material that can be coupled with said conductive element and configured to be fixable to the outer surface of said cover when said cover is fixed to said container, wherein said connector comprises coupling means between said conductive element and said locking element, said coupling means comprising at least one portion of said conductive element provided with an outer transverse profile of polygonal conformation and at least one portion of the inner surface of a housing seat of said locking element provided with an inner transverse profile of polygonal conformation, said outer transverse profile and said inner transverse profile being mutually complementary and adapted to be coupled to measure for the locking of said locking element in rotation on said conductive element, wherein said locking element comprises fixing means (9, 10) to said cover, characterized in that said fixing means (9, 10) comprising at least one portion projecting from the outer surface of said locking element and provided with at least one fixing hole, said fixing hole being positionable at a respective hole on said cover for fixing by means of screws or the like, and wherein said fixing hole is slot-shaped.