Our tungsten carbide-silver (WCAg) switch contacts are perfect for your power needs. They reliably switch short-circuit current in vacuum contactors in the 7.2 - 24 kV range, for instance, and have a life of more than a million switching cycles.
We manufacture WCAg compliant with the international standard ASTM B 663-94.
- high arc erosion resistance
- excellent electrical conductivity
- outstanding contact welding resistance
- very low chopping current
Our tungsten carbide-silver contact materials have a silver content between 25 and 60 wt.-%. We would be happy to advise you on the correct choice of material.
We use powder metallurgical techniques to manufacture our composite materials so that we can offer you the ideal combination of different material properties. The most important steps: We mix the input materials and then press and sinter the resulting material. This is the most cost-efficient way of giving our WCAg contact materials the required electrical and mechanical properties. Our manufacturing process allows us to achieve an extremely high material density in excess of 97 %.