Abstract: A non-arcing isolation joint for use on a collector rail on which collector shoes move includes a plurality of conductive segments between ends of a first pair of rail sections and between ends of a second pair of rail sections of the collector rail. Insulation is provided between the conductive segments and between the conductive segments and ends of adjacent rail sections. A rectifier is associated with each of the conductive segments to limit DC current flow to one direction. In this manner, as a collector shoe moves over the isolation joint current is prevented from moving between rail sections through the shoe.