The terminal block is used to facilitate the connection of wires. It is actually a piece of metal sealed in insulating plastic. There are holes at both ends for inserting wires, and there are screws for fastening or loosening. For example, two wires, sometimes If they need to be connected, sometimes they need to be disconnected. At this time, they can be connected with terminals, and they can be disconnected at any time without having to weld them or twist them together, which is very convenient and quick. And it is suitable for the interconnection of a large number of wires. In the power industry, there are special terminal blocks and terminal boxes, all of which are terminal blocks, single-layer, double-layer, current, voltage, common, and breakable. A certain crimping area is to ensure reliable contact and to ensure that sufficient current can pass.