Your benefits: Universal use - fits in any meter cabinet, regardless of manufacturer, thanks to a narrow width of only 27 mm. Installation in the pre-metering area thanks to conformity with application rule VDE-AR-N 4100 - confirmed by VDE approval. Tool-free and safe installation thanks to universal locking on 5 mm and 10 mm rail thickness. Integration in building management systems with optional telecommunication module. Lightning current arrester, according to Type 1 / Class I, for 3-phase power supply networks, with separate N and PE (L1, L2, L3, PE, N). Suitable for equipotential bonding in systems without external lightning protection with and without overhead line feed. For mounting on 40 mm busbar systems.