I have come to the 50 Schukokabel with this connector. The plug can be reliably and easily opened and closed. Inside there is enough space to connect also 2,5qmm cable. The strain relief is stable and all screws can be put well. With cheaper rubber plugs you often fight with one of the above points or more at the same time. As a cheaper alternative might be the ABL call. If the plug in daily use is more heavily loaded, I would still recommend the Merten. The only complaint would be the price.
