ELECTRIC BRAKE ACTUATOR, AND VEHICLE BRAKE SYSTEM

An electric brake actuator provided with a main reservoir (37) attached to a vehicle frame, a first reservoir (36) attached to an input device (14) and coupled to the main reservoir (37) via a pipe (86a), and a second reservoir (84) coupled to the main reservoir (37) via another pipe (86b) and directly mounted to a motor cylinder (16), wherein the second reservoir (84) is disposed below the main reservoir (37) in the vertical up and down direction.