Efficient protection against transient overvoltages for electrical supply lines with or without neutral using a metal oxide varistors and gas discharge tubes. It allows protection of three-phase lines type TT, TNS, TNC and IT. Medium protection according to coordinated stages protection recommended in Regulation of Low Voltages (REBT ITC23).
Its provided with removable cartridges that allows its replacement in case of fault thus without changing the base.
Tested and certified as Type 1, 2 and 3 according to regulations EN 61643- 11 and GUIDE-BT-23 from REBT. Suitable for Categories I, II, III and IV equipment according to ITC-BT-23 from REBT.