An electrical connector comprises a first housing, a second housing, a lever adapted to couple the first housing and the second housing with each other, a first interlock member, a second interlock member, a first cam mechanism adapted to mate the first housing and the second housing with each other with movement of the lever in a first direction, and a second cam mechanism. The second interlock member is configured to be mated with the first interlock member to energize an electric circuit. The first cam mechanism limits a moving direction of the lever to a second direction after moving in the first direction. The second cam mechanism is adapted to convert the movement of the lever in the second direction into movement in a mating direction of the first housing and the second housing to mate the first interlock member with the second interlock member.