DBL distribution blocks have a compact and modular design, allowing easy installation and flexible use. They provide three configurations in one product: single pole splitter — a split of the power main circuit input into several outputs; multiple poles splitter — an interlocking function and ready-to-use marking kit (L1, L2, L3, N, PE, + and -) delivered with each block; and grouping — a combination of several inputs into one output (solar application). The distribution blocks are equipped with a flexible and reversible cover featuring a two-direction opening to ease the wiring. All wiring data and specifications also are visible on top for a clear identification.