Earthing device, with clamp-vice servocontrol, comprising: an earth vice, equipped with a mechanical locking system, which is provided with a mechanical switch; an earthing clamp, equipped with a mechanical locking mechanism which is provided with a mechanical switch; said earth vice being connected by an insulated electrical conductor to said earthing clamp; said earthing clamp being in its initial state closed and locked by its locking mechanism, which simultaneously closes the associated mechanical switch; and said earth vice being in its initial state open and unlocked and said associated mechanical switch also being open; characterized in that: said earth vice is further equipped: with an electronic control circuit in which said mechanical switch of said earth vice is incorporated; with an electronically controlled and actuated unlocking device, preferably having a separate electronic circuit; with an electronic memory containing at least its unique identifier and preferably having a separate electronic circuit; with an electronic connector, gathering together the different electronic circuits for the external connection thereof; and said earthing clamp is further equipped: with an electronic control circuit in which said mechanical switch of said earthing clamp is incorporated; with an electronically controlled and actuated unlocking device, said unlocking device preferably having a separate electronic circuit; with an electronic memory containing at least its unique identifier and preferably having a separate electronic circuit, said identifier of the earthing clamp being associated with the identifier of the earth vice to which said earthing clamp is linked by its insulated electrical conductor cable; and with an electronic connector (112, 114), gathering together the different electronic circuits for the external connection thereof. an earth vice, equipped with a mechanical locking system, which is provided with a mechanical switch; an earthing clamp, equipped with a mechanical locking mechanism which is provided with a mechanical switch; said earth vice being connected by an insulated electrical conductor to said earthing clamp; said earthing clamp being in its initial state closed and locked by its locking mechanism, which simultaneously closes the associated mechanical switch; and said earth vice being in its initial state open and unlocked and said associated mechanical switch also being open; said earth vice is further equipped: with an electronic control circuit in which said mechanical switch of said earth vice is incorporated; with an electronically controlled and actuated unlocking device, preferably having a separate electronic circuit; with an electronic memory containing at least its unique identifier and preferably having a separate electronic circuit; with an electronic connector, gathering together the different electronic circuits for the external connection thereof; and with an electronic control circuit in which said mechanical switch of said earth vice is incorporated; with an electronically controlled and actuated unlocking device, preferably having a separate electronic circuit; with an electronic memory containing at least its unique identifier and preferably having a separate electronic circuit; with an electronic connector, gathering together the different electronic circuits for the external connection thereof; and said earthing clamp is further equipped: with an electronic control circuit in which said mechanical switch of said earthing clamp is incorporated; with an electronically controlled and actuated unlocking device, said unlocking device preferably having a separate electronic circuit; with an electronic memory containing at least its unique identifier and preferably having a separate electronic circuit, said identifier of the earthing clamp being associated with the identifier of the earth vice to which said earthing clamp is linked by its insulated electrical conductor cable; and with an electronic connector (112, 114), gathering together the different electronic circuits for the external connection thereof. with an electronic control circuit in which said mechanical switch of said earthing clamp is incorporated; with an electronically controlled and actuated unlocking device, said unlocking device preferably having a separate electronic circuit; with an electronic memory containing at least its unique identifier and preferably having a separate electronic circuit, said identifier of the earthing clamp being associated with the identifier of the earth vice to which said earthing clamp is linked by its insulated electrical conductor cable; and with an electronic connector (112, 114), gathering together the different electronic circuits for the external connection thereof.