PROTECT surge arresters are designed to protect devices in low-voltage power systems against direct and indirect atmospheric overvoltages and switching overvoltages. They are primarily used on low-voltage overhead lines. The arresters meet the requirements of standards: IEC-EN 61643-11 and LVD 2014/35/EU (dated 26.02.2014). The PROTECT series of clamps is dedicated to limiters. These are insulation-piercing line terminals that meet the requirements of the PN-EN 50483-4:2009 standard. Short-circuit resistance – Class A; water-tight double-sided insulation-piercing terminals – Class 1.