Abstract: A feed-through terminal block module includes first and second electrical terminals, a first current bar, and a second current bar, the terminals and current bars in a terminal housing. The first current bar permanently electrically connects the first and second terminals. The first current bar includes a first contact portion of the module. The second current bar includes a second contact portion of the module and a third contact portion of the module. A removable contact plug is inserted into the housing to selectively electrically connect the first and second contact portions. Removable bridge pins or a bridging current bar electrically connects the third contact portions of adjacent modules when modules are placed side-by-side to form a terminal block.