Four-post terminal block and accessories for nonconductive plane application

An electrical terminal board assembly for railroad equipment, the electrical terminal board assembly comprising:

• a terminal board comprising a plane, wherein the plane is constructed from a non-conductive material and having an external wiring on a rear of the plane;
• a single mounting screw;
• at least one terminal block mounted to the plane via the single mounting screw, each the at least one terminal block comprising:
• a terminal block body comprising first and second sides;
• a plurality of first connection posts extending from the first side of the terminal block body;
• and
• a second connection post extending from the second side of the terminal block body, the second connection post being connected to one of the plurality of first connection posts, the second connection post being configured to mount the terminal block to the plane, wherein the second connection post provides a direct connection to the external wiring on the rear of the plane;
• wherein the terminal block body includes a single hole extending through the first and second sides and configured to accept the single mounting screw for mounting the terminal block to the railroad terminal board;
• a three-way test link provided over three first connection posts;
• a test nut provided over one of the first connection posts to establish a conductive path between the three first connection posts;
• a ground strap provided over one of the first connection posts of the at least one terminal block and coupled to ground;
• and
• at least one surge protection component connected to the at least one terminal block, the at least one surge protection component being provided between one of the first connection posts connected to the three-way test link and one of the first connection posts not connected to the three-way test link.