Cables of 1 to 20 pairs individually shielded with an aluminium/polyester laminate. Conductors of 0.9 and 1.4 mm nominal diameter, PE insulation. Pairs are stranded in layers to form the core that is protected with a LSZH anti-inductive sheath with a reduction factor of 0.1. They are used as signalling cables in railways infrastructures where protection against power lines induction is required. For installation in ducts or directly buried in tunnels where fire resistance is needed. Protected against rodents.