Part of the ABC transporter complex FbpABC involved in Fe(3+) ions import. Responsible for energy coupling to the transport system. ATP + Fe(3+)(out) + H2O = ADP + Fe(3+)(in) + H(+) + phosphate The complex is composed of two ATP-binding proteins (FbpC), two transmembrane proteins (FbpB) and a solute-binding protein (FbpA). Belongs to the ABC transporter superfamily. Fe(3+) ion importer (TC 3.A.1.10) family.