therminal block Material: made of PA, PE or PP. Tightening of the wire is made by captive screwsplaced at the top of the strip to leave free the inserting part. There are 3 typesof terminal blocks, namely "H" type, "U" type, "W" type and "F" type. All typescan be supplied starting from 2 poles up to standard 12 poles version. terminal block