MC4 connector product display
MC4 connectors are divided into wire ends and board ends. In the usual sense, the MC4 referred to by everyone refers to wire ends. MC4 consists of two parts: metal parts and insulating parts. As mentioned earlier, MC is the abbreviation of Multi-Contact, and 4 is the size of the metal core diameter. Therefore, in the photovoltaic connector market, many so-called MC4s need to be re-clarified, and they may be more appropriately called "MC4-like".