DIN designation: U-DQ(ZN)BH ZB 3kN fiber optic cable as a central gel-filled loose tube version for structured cabling. The cable is metal-free, longitudinally watertight, rodent-proof with a tensile strength of 3.0kN. The sheath is made of halogen-free, flame-retardant material in accordance with IEC60332-1, IEC60754-1/2, IEC61034 and Eurofire class Eca. For indoor and outdoor use, both in direct burial (in an appropriate sand bed) and in pipes and as a flame-retardant cable indoors. The fiber optic cable exceeds the requirements of EN50173-1, ISO/IEC11801 and EN/IEC60794-6.