Only the negative side is switched. Part of Chademo's protocols demand full switching on contactors.
Oh, I have never taken a good look at a CHAdeMO. It must have a way to detect if both sides are open.
BTW, today, I rode my Energica to Carson City, Silver Springs, Fernley and all three CCS chargers worked perfectly and on the very first try. I made sure my kickstand was on the charger side. I really think that helps.
I slowly J-1772 charged on USA Parkway as I was having dinner.
I updated all these on Plugshare to say they are now all working.
Carson City needs more DC fast chargers. There is only one. I had to wait for it then 2 others were waiting for me. And all three of them needed to use CHAdeMO, but this stupid machine cannot do both (CCS & CHAdeMO) at once.
I hear there are a few these days that can do both at once.
-Don- Reno, NV