An interconnecting device (6, 50, 56, 58) for solid oxide fuel cells (4, 60), the interconnecting device (6, 50, 56, 58) comprising a body having a first interface surface, and a second interface surface on distinct sides of the body, wherein the first interface surface comprises at least one anode exhaust input and at least one cathode exhaust input in a distance to the at least one anode exhaust input, wherein the second interface surface comprises at least one fuel supply port and at least one oxidant supply port in a distance to the at least one fuel supply port, wherein the at least one anode exhaust input is in fluid communication with the at least one fuel supply port and/or at least one anode exhaust outlet arranged at a distance to the first interface surface and the second interface surface, wherein the at least one cathode exhaust input is in fluid communication with the at least one oxidant supply port and/or at least one cathode exhaust outlet arranged at a distance to the first interface surface and the second interface surface, wherein at least one first electrical port is arranged at or in the at least one cathode exhaust input and is connectable from the first interface surface, wherein at least one second electrical port is arranged at or in the at least one fuel supply port and is connectable from the second interface surface, and wherein the at least one first electrical port is electrically connected to the at least one second electrical port; wherein the at least one first electrical port and the at least one second electrical port are configured to electrically connect either to an anode channel or a cathode channel of an upstream fuel cell only and inversely connect either to the cathode channel or the anode channel only of a downstream fuel cell, wherein the other one of the anode channel or the cathode channel is insulated against the body; wherein on the first interface surface, the anode exhaust input comprises an insulating layer or a recess to avoid an electrical contact between the anode channel and the interconnecting device; and wherein the position of the cathode exhaust input matches the position of the cathode channel and the position of the anode exhaust input matches the position of the anode channel. wherein the first interface surface comprises at least one anode exhaust input and at least one cathode exhaust input in a distance to the at least one anode exhaust input, wherein the second interface surface comprises at least one fuel supply port and at least one oxidant supply port in a distance to the at least one fuel supply port, wherein the at least one anode exhaust input is in fluid communication with the at least one fuel supply port and/or at least one anode exhaust outlet arranged at a distance to the first interface surface and the second interface surface, wherein the at least one cathode exhaust input is in fluid communication with the at least one oxidant supply port and/or at least one cathode exhaust outlet arranged at a distance to the first interface surface and the second interface surface, wherein at least one first electrical port is arranged at or in the at least one cathode exhaust input and is connectable from the first interface surface, wherein at least one second electrical port is arranged at or in the at least one fuel supply port and is connectable from the second interface surface, and wherein the at least one first electrical port is electrically connected to the at least one second electrical port; wherein the at least one first electrical port and the at least one second electrical port are configured to electrically connect either to an anode channel or a cathode channel of an upstream fuel cell only and inversely connect either to the cathode channel or the anode channel only of a downstream fuel cell, wherein the other one of the anode channel or the cathode channel is insulated against the body; wherein on the first interface surface, the anode exhaust input comprises an insulating layer or a recess to avoid an electrical contact between the anode channel and the interconnecting device; and wherein the position of the cathode exhaust input matches the position of the cathode channel and the position of the anode exhaust input matches the position of the anode channel.