The invention relates to a device (1) for connecting/disconnecting a submersible connector (100) provided with a male portion (101) and a female portion (102), to a related connection/disconnection method, as well as to the various potential uses of said device. The device includes means (11, 12) for moving at least one of said male or female portions of the connector (100) between a connection position and a disconnection position and vice versa, and is characterized in that it further includes a system (16) for injecting a fluid (20) around the male (101) and female (102) portions of the connector (100) when the latter passes from the connection position thereof to the disconnection position thereof and vice versa, in order to insulate the same from the water surrounding the connector (100), the injection system (16) being located outside the connector (100).
