I bought the male and female versions of this to serve as a disconnect switch for my removable car battery (this is a project car). I review male and female together and plan to publish the same review for both subjects. They do their job well. They are rated for 50A and have four pins each. I connected the "+" and "-" wires to the two pins with a fairly heavy short jumper to get to the 2nd blade. Two heavy-duty blades per cable provide excellent current handling. install these. The two screws that hold the cable clamp in and out of the connector are different from the others that hold the two halves of the housing together. Don't confuse them. Cable clamps are mounting screws, while others are basically self-tapping screws that bite into plastic. It's easy to tell the difference, but working in a confined space I managed to confuse them. They have good connections inside with screw terminals. One of the two blocks was missing one of the four small clamps that tightened the screw. Instead of asking for a replacement, I put a ring terminal on the end of my cable and used the screw that came with it to connect it to the ring terminal. Works perfectly.
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