To obtain an electric power connector which has a minimized electric power distribution impedance and a minimized common-mode voltage transient phenomenon.

The electric power connector has a housing, the first electric power contact piece connected to the housing, and the second electric power contact piece connected to the housing. The first electric power contact piece has at least two contact piece beams. The second electric power contact piece has at least two contact piece beams which are installed outside the contact piece beams, and which are installed in parallel with this contact piece in this contact piece. The second electric power contact piece has a separate connecting part for each contact piece beam. Both of the first electric power contact piece and the second electric power contact piece are installed next to each other within about 30 mil (0.08 mm) or less along almost all the length of them.