Wago 8 level matrix patch terminal block din 35x75mm no lock plain 727 series wago 727 120 wago 727 120 8 level matrix patching terminal block without locking clips for din rail 35x75mm plain complies with en60715 8 x pair wise connection of clamping units on the same level colour grey 25pcs wago 727 120 8 level matrix block plain no lock din 75mm grey 25pk