A connector assembly (1) is provided which comprises a housing (3) and at least one conductor module (5). The conductor module comprises at least a first sub-module (7) and a second sub-module (9) attached together to form the conductor module. The conductor module is at least partially received in the housing. The housing and the first sub-module comprise cooperating positioning structures for positioning the at least one conductor module into the housing such that the position of the second sub-module with respect to the housing is determined by the position of the first sub-module with respect to the housing in at least a first direction (X; Z). A connector assembly is also provided in which at least one contact comprises at least one contact beam of which a part is resiliently displaceable substantially parallel to a side wall of the housing from a preload position to a second position for receiving a mating contact. The housing comprises a stand-off structure configured to cooperate with at least a portion of the contact to provide and maintain a separation between at least the contact portion and the first side wall in and between the preload position and the second position.
