Wago 4 level same potential block din 35x15mm lock alphabetic 727 series wago 727 235022 000 wago 727 235022 000 4 level same potential terminal block with locking clips for din rail 35x15mm marked a b c d d c b a complies with en60715 all clamping points are short circuited colour orange 50pcs wago 727 235022 000 4 level same potential block a d d a lock orange 50pk