Interconnect device comprising: - first terminals (L1/C1, T1/C1, L2/C1, T2/C1, L3/C1, T3/C1) configured to be electrically connected to first electrical contacts (40, 42, 44) of a first electric current interrupting apparatus; - second terminals (L1/C2, T1/C2, L2/C2, T2/C2, L3/C2, T3/C2, 13NO/C2, 14NO/C2, 53NO, 54NO, 63NO, 64NO, 73NO, 74NO, 83NO, 84NO) configured to be electrically connected to second electrical contacts (50, 52, 54, 56, 58, 60, 62, 64) of a second electric current interrupting apparatus; - third terminals (A1/C1, A2/C1) configured to be electrically connected to a first actuator of the first interrupting apparatus; - fourth terminals (A1/C2, A2/C2) configured to be electrically connected to a second actuator of the second interrupting apparatus; - an input terminal, an output terminal and control terminals (14, 16); - a first electric circuit which connects the input and output terminals to the first terminals and to the second terminals in order to electrically connect the first and second contacts of the first and second interrupting apparatuses between the input and output terminals; - a second electric circuit which connects the control terminals to the third and fourth terminals in order to distribute a control signal applied between the control terminals (14, 16) to the third terminal (A1/C1, A2/C1) and the fourth terminal (A1/C2, A2/C2), the second electric circuit further comprising an electronic circuit connected between the control terminals and the fourth terminals, the electronic circuit being configured to delay, by a predefined delay time, the transmission to the fourth terminals of a control signal for opening of the electrical contacts that is received from the control terminals; characterised in that the interconnect device is preassembled and comprises a support on which there are mounted the first terminals (L1/C1, T1/C1, L2/C1, T2/C1, L3/C1, T3/C1), the second terminals (L1/C2, T1/C2, L2/C2, T2/C2, L3/C2, T3/C2, 13NO/C2, 14NO/C2, 53NO, 54NO, 63NO, 64NO, 73NO, 74NO, 83NO, 84NO), the third terminals (A1/C1, A2/C1) and the fourth terminals (A1/C2, A2/C2), the input terminal, the output terminal and the control terminals (14, 16) and in which there are integrated the first and second electric circuits. - first terminals (L1/C1, T1/C1, L2/C1, T2/C1, L3/C1, T3/C1) configured to be electrically connected to first electrical contacts (40, 42, 44) of a first electric current interrupting apparatus; - second terminals (L1/C2, T1/C2, L2/C2, T2/C2, L3/C2, T3/C2, 13NO/C2, 14NO/C2, 53NO, 54NO, 63NO, 64NO, 73NO, 74NO, 83NO, 84NO) configured to be electrically connected to second electrical contacts (50, 52, 54, 56, 58, 60, 62, 64) of a second electric current interrupting apparatus; - third terminals (A1/C1, A2/C1) configured to be electrically connected to a first actuator of the first interrupting apparatus; - fourth terminals (A1/C2, A2/C2) configured to be electrically connected to a second actuator of the second interrupting apparatus; - an input terminal, an output terminal and control terminals (14, 16); - a first electric circuit which connects the input and output terminals to the first terminals and to the second terminals in order to electrically connect the first and second contacts of the first and second interrupting apparatuses between the input and output terminals; - a second electric circuit which connects the control terminals to the third and fourth terminals in order to distribute a control signal applied between the control terminals (14, 16) to the third terminal (A1/C1, A2/C1) and the fourth terminal (A1/C2, A2/C2), the second electric circuit further comprising an electronic circuit connected between the control terminals and the fourth terminals, the electronic circuit being configured to delay, by a predefined delay time, the transmission to the fourth terminals of a control signal for opening of the electrical contacts that is received from the control terminals;