Terminal blocks are devices that allow the passage of electric current between conductive materials in electrical circuits. In electrical circuits, connections are made between terminals, communication line, cables, sockets and similar parts. In this way, regular flow of electric current in the electric circuit is ensured and the circuit continues to work.

Terminal blocks can be produced in various shapes and sizes and can be selected to suit different electrical circuits. For example, different terminals are used for AC and DC electrical circuits. In addition, there are different options according to the capacity of the terminals, and this capacity indicates the maximum amount of current that the terminals can carry. Terminals are a tool that is usually necessary for the proper operation of electrical circuits and are used to make the circuit work.