A relay for use particularly in motor vehicles has a stable ferromagnetic core, an excitation coil wound around the core and a movable assembly, composed by a movable ferromagnetic armature, connected to a blade carrying an electric contact. The blade is movable with respect to the armature and has a fulcrum in an appropriate seat obtained in the armature. The blade is constrained to the armature in an elastic fashion, but is suitable to produce a damping effect on the bouncing phenomenon. The relay also has a return spring to maintain the assembly in a position of maximum air gap with respect to the stable core, when the device is in a release condition, whereby a leaf spring is provided, being fixed in a predetermined point of the movable armature, which constrains for elastic reaction the movement of the movable blade and maintains the desired pressure contact on the electric contact.