Wago 4 level same potential block din 35x75mm no lock alphabetic 727 series wago 727 226022 000 wago 727 226022 000 4 level same potential terminal block without locking clips for din rail 35x75mm marked a b c d d c b a complies with en60715 all clamping points are short circuited colour orange 50pcs wago 727 226022 000 4 level same potential block a d d a no lock orange 50pk