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diy solar

MC4 connection standard

Male connector positive
 

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    CF27AA7D-9AF1-4123-8721-463A9C10A068.png
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^^The maker/originator of genuine MC4 connectors, Multi-Contact/Stäubli, disagrees:
The male and female designations refer to the metal contact, and not the plastic housing.

Male connector:
1658002728438.png
Wikipedia reference
The MC4 system consists of a plug and socket design. The plugs and sockets are inside plastic shells that appear to be the opposite gender - the plug is inside a cylindrical shell that looks like a female connector but is referred to as male, and the socket is inside a square probe that looks male but is electrically female. The female connector has two plastic fingers that have to be pressed toward the central probe slightly to insert into holes in the front of the male connector. When the two are pushed together, the fingers slide down the holes until they reach a notch in the side of the male connector, where they pop outward to lock the two together.
 
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