assembly for electrical connection

The assembly (12) has a male element (4) including a sleeve (43) with an outer radial surface (436) having large and small diameter stages (433, 434) whose outer surfaces are complementary to outer surfaces of large and small diameter stages (626, 628) of an inner radial surface (65) of a body (62) of a female element (6). The large and small diameter stages of the outer radial surface of the sleeve are engaged at the level of the large and small diameter stages of the inner radial surface of the body when the sleeve is completely fitted in the female element.