PV 275A Isolator Switch dissasembly and comment

DIY
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I’m sure you’re right, these are YIS Marine BF441 switches (YIS theoretically holds a valid and current patent for them) but YIS sells almost exclusively as “white labeled”, so besides the one with Victron packaging we also see them with various marine store packaging and etc. I mostly just wanted to be sure, when I bring the matter up again, that it couldn’t be claimed that the photos and obvious insufficiencies are the result of some other cheaper clone!