Arrester , Class C, Code: 5094760(V20-C 1+NPE+FS)

This arrester is used for protection against switching, in fact this arrester is used as secondary protection against overvoltage and eliminates leakage voltage of class B arresters it also transfer the over voltage to the ground. Surge arrester class C is designed so that it makes an interface between the conductor and the ground and reduces the voltage in electrical devices. Serge arrester class C is unipolar and protect electrical equipment from lightning and when the applied voltage is changing. This surge arrester has a high disgorge capacity because it has been made with the metal oxide varistor.