Abstract: A medical system with adjustable, movable components that can be set by disengageable brakes, in particular an X-ray diagnostic apparatus with a C-arm that can be adjusted in the height of its orbital position and angulation and that carries an X-ray source and a beam receiver at its ends, has a sterilizeable handle that can be plugged in various positions, with a plug lock. A disengage button for the system brakes is arranged on the handle, which can be engaged with switching apparatuses in the system upon plugging the handle into a component of the system. The button can then be operated for actuating and disengaging the brakes.