Materials Insulating base molded polyamide resin (PA6-6) colourless with slits for ventilation and air separators in a single body. Terminals molded brass EN 12165. Culverts sectioning electrolytic copper UNI EN 13599 nickel. Screws with washers culverts anti losers stainless steel AISI 304. Characteristics With clamps for clamping slot conductor through grain screw with swivel plate. Spacers athermal between base and terminals for limiting the transmission of heat. Terminal block 3-way isolator for pole. Protection degree IP 00 in accordance with CEI EN 60529.