  Using the formalism of nonlinear realizations we construct the component
on-shell action of the N=4,d=3 Born-Infeld theory, which is the action of N=2,
d=3 vector supermultiplet, fixed by invariance with respect to the additional
spontaneously broken N=2, d=3 supersymmetry. Our construction shows that
dealing with the systems with partial breaking of supersymmetry with vector
fields in the multiplet, it is preferrable to use their formulation in terms of
fermionic superfields only.
