MC4 connectors are single-contact electrical connectors commonly used for connecting solar panels. The MC in MC4 stands for the manufacturer Multi-Contact (now Staubli Electrical Connectors) and the 4 for the 4 mm diameter contact pin.
MC4s allow strings of panels to be easily constructed by pushing the connectors from adjacent panels together by hand, but require a tool to disconnect them to ensure they do not accidentally disconnect when the cables are pulled.
The MC4 and compatible products are universal in the solar market today, equipping almost all solar panels produced since about 2011. These newer MC4 connectors are rated at 1500 V, which allows longer strings to be created.
|Connector Type||Outward Lock|
|Rated Voltage||1500v DC (IEC)/ 800v DC(UL)|
|Rated Current||TUV 30A /UL 30A|
|Degree of Protection||IP67|
|Plating||Copper, Tin Plated|
|Cross Sectional Area||2.5mm2, 4mm2& 6mm2|
|Cable Outer Diameter||2.5mm2 – 6mm2|
|Ambient Temperature||-40°C ~ 90°C (IEC)|
|Locking System||Snap In|
Note : TUV certificate is available on demand so that other cheap product sellers, don’t use the same certificate and claim their product to be TUV certified