Abstract: The present invention relates to a device (1) for handling an absorbent rod (11) for controlling a nuclear reactor, comprising (a) an upper motor compartment (2) positioned on the closing slab (10) of the reactor vat (13), (b) a rod control stem (3), extending in said motor compartment (2) and in a guide sheath (3a) extending inside said vat, characterized in that it comprises (1) a sealed static confinement chamber (5) made of non-magnetic material arranged inside said upper compartment, (2) a first synchronous magnetic coupling system (6a) for transmitting linear translational movement without mechanical contact comprising a first outer component (6a-1) arranged outside said chamber (5), and able to be vertically translated, and a first inner component (6a-2) arranged inside said chamber (5), integral with said rod control stem (3), a magnetic coupling force of said first outer component (6a-1) and said first inner component (6a-2) making it possible, when the first outer component (6a-1) is displaced in ve