Disclosed is a circuit arrangement for supplying variable loads (I1, I2, M1, M2, O1, O2, O3) from three phases (L1, L2, L3), with a circuit arrangement having four groups of terminals (A11, A12, A13, A14; A21, A22, A23, A24; A31, A32; A41, A42, A43) for the loads (I1, I2, M1, M2, O1, O2, O3) which are subsequently designated as terminal groups; the circuit arrangement is suitable and set up for supplying the terminals (A21, A22, A23, A24) of the second terminal group from the first phase (L1); the circuit arrangement is suitable and set up for supplying the terminals (A41, A42, A43) of the fourth terminal group from a second phase (L2); the circuit arrangement is suitable and set up for supplying the terminals (A11, A12, A13) of the first terminal group and the third terminal group (A31, A32) from a third phase (L3); the circuit arrangement is suitable and set up for controlling the voltage of the four terminal groups, and exhibits three control loops for this purpose.