Electrical Contact Sheet, which are manufactured both by traditional and vacuum casting (silver-based alloys) and by powder mixing (silver-based pseudo-alloys). Amongst the materials that are added to the silver in order to produce a specific electric function, we employ graphite (AgC), nickel (AgNi), iron (AgFe), tungsten (AgW), tungsten carbide (AgWC). Composition: AgWC The silver carbonized tungsten material, containing 12 - 65% carbonized tungsten, has extremely high durability. Its contactor resistance is slightly higher than silver tungsten, but is very stable. Applications: Used in low voltage automatic switches, high-voltage breakers, protective switch breakers, leakage switches and rail switches. This product has a high arc and burning resistance, a low fusion trend, and can be used with silver nickel contactors.