A bidirectional direct current converter, having a primary circuit to be connected to an input-side direct current circuit and a secondary circuit to be connected to an output-side direct current circuit, and having a current intermediate circuit downstream of the primary circuit or upstream of the secondary circuit, respectively, the primary circuit and the secondary circuit are each being in the form of a 3-point converter, wherein - the current intermediate circuit comprises a high voltage bus bar and a low voltage bus bar, and an inductor (8, 9) is connected into the respective high voltage bus bar and low voltage bus bar of the current intermediate circuit, - the primary circuit comprises a half-bridge circuit having a high voltage branch and a low voltage branch connected in series therewith, and a high voltage-side semiconductor switch and a low voltage-side semiconductor switch are arranged in series in the high voltage branch, the high voltage bus bar of the current intermediate circuit being clamped therebetween, and a high voltage-side semiconductor switch and a low voltage-side semiconductor switch are arranged in the low voltage bus bar, the low voltage bus bar of the current intermediate circuit being clamped therebetween, - wherein the secondary circuit comprises a half-bridge circuit having a high voltage branch and a low voltage branch connected in series therewith, and a high voltage-side semiconductor switch and a low voltage side semiconductor switch are arranged in series in the high voltage branch, the high voltage bus bar of the current intermediate circuit being clamped therebetween, and a high voltage-side semiconductor switch and a low voltage-side semiconductor switch are arranged in the low voltage branch, the low voltage bus bar of the current intermediate circuit being clamped therebetween, - a capacitor (24, 25, 26, 27) is connected in parallel with the respective high voltage branch (11, 18) and the low voltage branch (12, 19) of the primary circuit and the secondary circuit, - the current intermediate circuit comprises a medium voltage bus bar, which is clamped between each of the high voltage branch (11, 18) and the low voltage branch (12, 19) of the primary circuit and the secondary circuit, - wherein an electromechanical switch is connected in parallel with the high voltage-side semiconductor switch (13, 20) in the high voltage branch (11, 18) of the primary circuit and/or the secondary circuit and with the low voltage-side semiconductor switch (16, 23) in the low voltage branch (12, 19) of the primary circuit and/or the secondary circuit, - wherein the semiconductor switches (13-16, 20-23) are formed by field effect transistors. - the current intermediate circuit comprises a high voltage bus bar and a low voltage bus bar, and an inductor (8, 9) is connected into the respective high voltage bus bar and low voltage bus bar of the current intermediate circuit, - the primary circuit comprises a half-bridge circuit having a high voltage branch and a low voltage branch connected in series therewith, and a high voltage-side semiconductor switch and a low voltage-side semiconductor switch are arranged in series in the high voltage branch, the high voltage bus bar of the current intermediate circuit being clamped therebetween, and a high voltage-side semiconductor switch and a low voltage-side semiconductor switch are arranged in the low voltage bus bar, the low voltage bus bar of the current intermediate circuit being clamped therebetween, - wherein the secondary circuit comprises a half-bridge circuit having a high voltage branch and a low voltage branch connected in series therewith, and a high voltage-side semiconductor switch and a low voltage side semiconductor switch are arranged in series in the high voltage branch, the high voltage bus bar of the current intermediate circuit being clamped therebetween, and a high voltage-side semiconductor switch and a low voltage-side semiconductor switch are arranged in the low voltage branch, the low voltage bus bar of the current intermediate circuit being clamped therebetween, - a capacitor (24, 25, 26, 27) is connected in parallel with the respective high voltage branch (11, 18) and the low voltage branch (12, 19) of the primary circuit and the secondary circuit, - the current intermediate circuit comprises a medium voltage bus bar, which is clamped between each of the high voltage branch (11, 18) and the low voltage branch (12, 19) of the primary circuit and the secondary circuit, - wherein an electromechanical switch is connected in parallel with the high voltage-side semiconductor switch (13, 20) in the high voltage branch (11, 18) of the primary circuit and/or the secondary circuit and with the low voltage-side semiconductor switch (16, 23) in the low voltage branch (12, 19) of the primary circuit and/or the secondary circuit, - wherein the semiconductor switches (13-16, 20-23) are formed by field effect transistors.