Wago 4 level matrix patch terminal block din 35x15mm no lock plain 727 series wago 727 234 wago 727 234 4 level matrix patching terminal block without locking clips for din rail 35x15mm plain for atex applications complies with en60715 4 x pair wise connection of clamping units on the same level colour blue 50pcs wago 727 234 4 level matrix block plain no lock din 15mm for atex blue 50pk