Power supply system comprising a power converter unit and a rack

A power supply system comprising a power converter unit and a rack, wherein:

• the rack comprises a shelf and a shelf connection device;
• the power converter unit comprises a housing and a unit connection device, where the unit connection device is adapted to be releasably locked to the shelf connection device when the power converter unit is inserted into the shelf, wherein
• the shelf connection device comprises a recess, wherein
• the unit connection device comprises a plate spring and an actuating device, where a first end of the plate spring is connected to the housing and a second end of the plate spring is supported on or connected to the actuating device, where the actuating device is arranged to move the plate spring between a locked position, in which the plate spring is protruding from the housing into the recess, and an open position, in which the plate spring is retracted from the recess, and wherein
• the actuating device comprises a pivot element pivotably connected to the housing, wherein
• the pivot element comprises a dog axially protruding from the pivot element and where the second end of the plate spring is supported on or connected to the dog.