Plug connector equipped with compression contact terminals

The invention concerns a plug connector ( 1 ) equipped with compression contact terminals ( 5 ). In order to clean each of the contact surfaces of at least one first compression contact terminal ( 5 ) of a plug connector ( 1 ) and of a second contact terminal ( 9 ) of a connector with fixed base ( 2 ) respectively, the invention provides for at least one first contact terminal ( 5 ) of the plug connector including a contact end ( 8 ), Which contact end is provided with at least protuberance ( 12 ) mounted at the tip of its elongated part ( 16 ) extending in a plane perpendicular to an elongation axis ( 13 ) of said contact end and/or to a connection axis ( 15 ). Said protuberance comprises a cut out panel ( 38 ) to cause a forced lateral displacement of the contact end when said protuberance is urged to slide against an inner periphery ( 14 ) of the cavity, so as to obtain a reorientation of the elongation axis of the contact end relative to the connection axis upon electrical connection between the first contact terminal and the second contact terminal.