MC4 connectors are single-contact electrical connectors commonly used for connecting solar panels. These MC 4 Male connector + Female connectors with seal ring are surely gives user a better waterproof effect. Features : Protection Degree: IP2X,unmated;IP67,mated Quick & simple assembly processing and simple removal of plugs without the aid of any extra instrument Seal ring for better waterproof effect Compatible with PV cables with different insulation diameters Resistance of extra high & low temperature and fireproof Load capability with big current and high voltage Rated Current: 30A Withstanding Voltage: 1000V DC Contact Resistance: Less than 0.5 Mohms Protection Class: Class II Wire Size Range: 2.5mm2, 4mm2, 6mm2[AWG14, AWG12, AWG10] Package Content: 1 x MC4 Male Connector 1 x MC4 Female Connector (Note : Photo attached is for reference only, it may be slightly varied in items of colour, shape from the actual item delivered from time to time) We carry 50W Solar panel, 20W Solar panel, 10W, Solar Panel