Abstract: An electrical collector shoe assembly for a rail electrification system, including a metal holder member in the form of an elongate block body having spaced-apart gripping flanges projecting from its opposite sides upwardly and inwardly of the body, an elongate metal collector shoe extending along the top of the block body and having recessed surfaces in its opposite sides and in which the gripping flanges are disposed, and advanceable studs carried by the block body and engaged with the under portion of the collector shoe, applying an upward thrust to the shoe to cause the gripping flanges of the block body to be forcibly engaged with the recessed surfaces of the shoe. There is thus established a unitary electrical and mechanical connection between the shoe and holder member. Servicing and/or replacement of the shoe is greatly facilitated as a consequence of the simplicity of the assembly.