Cables from 1 to 28 star quads, conductors of 0.9 and 1.4 mm, PE insulation. Quads are stranded in layers to form the cable core. The core protection is an anti-inductive sheath with reduction factor of 0,1, low smoke and fire resistant (LSZH). They are used as telecommunication or signaling cables in railways networks, especially in railways infrastructures where protection against power lines is needed. For installation in ducts or directly buried in tunnels where fire resistant characteristics are needed. Protected against rodents.