Polypropylene terminal strips. According to the EU directives on low voltage 73/23 CEE and 93/68 CEE. Standard IEC/EN60998-1, 60998-2-1. Insulating material: white polypropylene (UL94V2). Steel terminal connection. Zinc steel captive screws. Nominal voltage: 450 V. Self-extinguishing: 960°C, UNE 20672-2-1, VDE 0471, CEI 695-2-1. Temperature Range: from -5°C to 110°C.