Device , in particular an electronic power device, including: - a first power switch (S1) and a second power switch (S2) that are connected in series between first and second connection terminals of the device; - an electronic control circuit configured to control the first and second power switches (S1, S2); a detection apparatus including at least one coil associated with the first and second connection terminals; an electronic processing circuit configured to identify the presence of an electric fault in the device as a function of an electric voltage measured by the coil , the electronic processing circuit being mounted on a support plate and the first and second connection terminals being arranged side by side, and preferably aligned, substantially in a same geometric plane {P1), the coil being mounted on the support plate parallel to the first and second connection terminals to measure the magnetic field in said plane; and a case including a main face on which the first and second connection terminals are arranged, the support plate being attached on said main face, the first and second switches (S1, S2) being housed inside the case, and wherein the support plate includes a recess with a shape complementary to a portion of the case on which the first and second connection terminals are mounted, the control circuit being mounted on the support plate . - a first power switch (S1) and a second power switch (S2) that are connected in series between first and second connection terminals of the device; - an electronic control circuit configured to control the first and second power switches (S1, S2); a detection apparatus including at least one coil associated with the first and second connection terminals; an electronic processing circuit configured to identify the presence of an electric fault in the device as a function of an electric voltage measured by the coil , the electronic processing circuit being mounted on a support plate and the first and second connection terminals being arranged side by side, and preferably aligned, substantially in a same geometric plane {P1), the coil being mounted on the support plate parallel to the first and second connection terminals to measure the magnetic field in said plane; and a case including a main face on which the first and second connection terminals are arranged, the support plate being attached on said main face, the first and second switches (S1, S2) being housed inside the case, and wherein the support plate includes a recess with a shape complementary to a portion of the case on which the first and second connection terminals are mounted, the control circuit being mounted on the support plate . a detection apparatus including at least one coil associated with the first and second connection terminals; an electronic processing circuit configured to identify the presence of an electric fault in the device as a function of an electric voltage measured by the coil , the electronic processing circuit being mounted on a support plate and the first and second connection terminals being arranged side by side, and preferably aligned, substantially in a same geometric plane {P1), the coil being mounted on the support plate parallel to the first and second connection terminals to measure the magnetic field in said plane; and a case including a main face on which the first and second connection terminals are arranged, the support plate being attached on said main face, the first and second switches (S1, S2) being housed inside the case, and wherein the support plate includes a recess with a shape complementary to a portion of the case on which the first and second connection terminals are mounted, the control circuit being mounted on the support plate . <EOS>