a locking lever, which is rotatable and configured to lock a fitting state between the electrical connector and a mating connector;

a switching mechanism, which is arranged so as to be movable between a first position and a second position, the switching mechanism comprising a switch that generates a signal capable of establishing conduction between the electrical connector and the mating connector when operated by the locking lever, and the switch generates a signal for interrupting the conduction between the electrical connector and the mating connector, or does not generate the signal capable of establishing the conduction between the electrical connector and the mating connector under a state in which the switch is not operated by the locking lever;

a shell, which is configured to accommodate the locking lever and the switching mechanism therein;

a cover comprising a cover-side retaining portion, the cover being arranged on the shell so that at least a part of the cover is exposed to an outside of the shell; and

a switch-side retaining portion, which is arranged in the switching mechanism and configured to retain the switching mechanism at the first position through contact with the cover-side retaining portion, the locking lever comprising:

a rotation shaft defining a center of rotation;

a locking portion to be brought into contact with the mating connector; and

an operating portion, which is arranged on an opposite side of the locking portion across the rotation shaft, and is capable of operating the switch,

wherein, when the switching mechanism is located at the first position, the locking lever is rotated so that the operating portion is capable of operating the switch,

wherein, when the cover-side retaining portion and the switch-side retaining portion are in a non-contact state, the switching mechanism is arranged at the second position, and

wherein, when the switching mechanism is located at the second position, the operating portion is incapable of operating the switch.