An electric cabinet comprising an outer frame defining the general shape of the electric cabinet and an inner frame comprising fixing uprights and cross-members, a functional assembly fixed onto the inner frame and comprising a plurality of functional units each equipped with a mounting plate designed to receive one or more electric equipment units. The mounting plates are fixed onto the uprights and fixing cross-members in contiguous manner to form a separating partition delineating a first space located towards the front part and a second space located towards the rear part. The functional assembly comprises at least one support fixed in independent manner onto an upright or a cross-member of the inner frame and a connector arranged on the support, the support being positioned on the upright or fixing cross-member so as to enable the connector to pass through an opening made through the mounting plate.