An arrangement adapted for a subsea application

An arrangement (22), related to a subsea electric power distributing AC-system, and adapted for a subsea application, said arrangement (22) being enclosed in a watertight casing (21), whereby said casing is exposing a main power input connection (23), adapted for a watertight co-ordination with a first subsea cable (11a) and a main power output connection (24), adapted for a watertight co-ordination with a second subsea cable (11 b), said second subsea cable (11 b) being adapted for a power supply to an AC-current and AC-voltage adapted device (9), such as a compressor or pump equipment. Said arrangement (22) includes interconnected: a voltage regulating means (30), connected to said first cable (11a), and a NO-load switching unit (31), connected to said second cable (11b), and a control unit (32). Said control unit (32) is adapted, in a first operative mode, to regulate the output AC-voltage from said voltage regulating means (30) towards and to zero, or at least almost to zero, and in a second subsequent operative mode, to bring the NO-load switching unit (31) from an ON-position to an OFF-position or vice versa.