Staubli/Multi Contact 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) and the 4 refers to 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 50A /UL 50A|
|Degree of Protection||IP68 (Dust & Water Proof)|
|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 and other certificates are availbale on demand basis, so that other cheap product sellers, don’t sell their products claiming to be TUV certified.