They make it simple to disconnect and reconnect wires to the board and are utilized in PCB designs where space is an issue. In contrast to larger terminal blocks (e.g., 5.08mm pitch), they can manage lower current and voltage levels. Because they make it simple to disconnect and reconnect wires to the board, these connectors are frequently used in PCB designs where space is an issue. In contrast to larger terminal blocks (e.g., 5.08mm pitch), they can manage lower current and voltage levels. The terminal block connector's model or series number is 15EDGKN. The model number's "EDG" frequently denotes that it is a pluggable connector in the European style. 3.81mm is the pin pitch, or the separation between a pin's center and the center of another pin.