The terminal is a part of the connector, and the connector is a general term. In fact, the connector we commonly see usually includes two parts: a housing and a terminal. The plastic shell is generally plastic, which plays a protective role; the terminal is generally metal, which plays the role of conducting the two ends of the product. The terminal is an accessory product used to realize electrical connection and is used to facilitate the connection of wires. In fact, it is a piece of metal sheet enclosed in insulating plastic, with holes at both ends, which can be inserted into the wires. The terminal blocks can be divided into plug-in terminal blocks and European-style terminal blocks.