Wago 4 level matrix patch terminal block din 35x75mm no lock numeric 727 series wago 727 224021 000 wago 727 224021 000 4 level matrix patching terminal block without locking clips for din rail 35x75mm marked 0 1 2 3 3 2 1 0 for atex applications complies with en60715 4 x pair wise connection of clamping units on the same level colour blue 50pcs wago 727 224021 000 4 level matrix block 0 3 3 0 no lock for atex blue 50pk