Universal plug-in lightning current / surge arresters based on Varistor for 3-phase power supply networks with separate N and PE (5 conductor system: L1, L2, L3, N, PE), for the lightning protection classes III and IV.
Universal plug-in lightning current / surge arresters based on Varistor for 3-phase power supply networks with separate N and PE (5 conductor system: L1, L2, L3, N, PE), for the lightning protection classes III and IV, with telecommunication contact.