Terminal block with split-type ferrite core assembly

A drive unit comprising:

• a rotary electric machine;
• an electric-power control device configured to control driving of the rotary electric machine;
• a casing that houses the electric-power control device;
• a terminal block fixed to the casing, and provided with a plurality of connection lines to which an output of the electric-power control device is to be supplied;
• and
• a split-type ferrite core assembly including an annular ferrite core surrounding the plurality of connection lines by extending in a circumferential direction around a direction in which the plurality of connection lines extend,
• wherein the terminal block and the ferrite core assembly are fastened together to the casing by a fastener,
• wherein the ferrite core assembly includes first and second core portions into which the annular ferrite core is divided, a first holding portion holding the first core portion and a second holding portion holding the second core portion,
• wherein the first and second holding portions are engaged with each other such that the first and second core portions cooperate to form an annular shape, and
• wherein at least one of the first and second holding portions includes a pressing portion that presses one of the first and second core portions toward the other.