Description Yes, a 6mm Black MC4 Connector is another type of electrical connector commonly used in photovoltaic (PV) solar power systems. Similar to the red MC4 connector, the black MC4 connector is designed to provide a secure and waterproof connection between solar panels and other components of the solar system. The “6mm” refers to the cable size that the connector is designed to accommodate. These connectors are also colour-coded for easy identification, with the black connectors typically used for the negative (-) side of the electrical connections in the system.
