Visico™ LE4417 / Ambicat™ LE4476 is a silane crosslinkable natural compound system designed for insulation of flexible low voltage energy cables. Visico LE4417 is a low-density terpolymer comprised of polyethylene, vinyl silane and a further co-monomer defining the flexibility of the polymer. Ambicat LE4476 is an ambient crosslinking catalyst masterbatch specially designed to be used with Visico base resins. The system is highly active and crosslinks quickly at ambient conditions, in sauna or in hot water. Cable insulation with a proper mixture of Visico LE4417 (95 parts) and Ambicat LE4476 (5 parts) exhibits excellent thermo-oxidative stability. The combination is suitable for both copper and aluminum conductors.