1.This group of materials is especially arc and electric wear resistant and is used in high and medium voltage 2.fast delivery
1.This group of materials is especially arc and electric wear resistant and is used in high and medium voltage switchgears. In these applications CUW shows its high resistance to thermal and mechanical shocks. An additional field of application of CUW materials are electrodes for lighting protection devices.
2. In the most severe applications associated with power generation and transmission the switch may be totally immersed in oil. In these cases there is no advantage in using the tarnish resistant silver-based materials, as oxidation is prevented by the exclusion of air. Copper tungsten contacts are widely used in these cases, the selection of the grade used being dependent on the relative importance of conductivity and arc resistance.
Product Categories
Silver graphite ,silver tungsten,silver tungsten carbide,silver tungsten carbide graphite,silver nickel,silver oxide tin,silver zinc oxide,copper tungsten, copper tungsten carbide,copper graphite,silver nickel graphite
Product Features
1. Silver graphite contact has a good performance in resistance to contact wedding,low contact resistance and high arc erosion resistance;
2. AgWC contact is very hard and sufficient mechanical strength,during arcing a protective gas layer of CO is formed which limits the reaction of oxygen on the contact surface and therefore the formation of metaloxides
Main Application
1. Silver tungsten series applied in all kinds of universal type breaker,molded case circuit breaker,heavy load of ac&dc contactor and other switch electrical appliances.
2. Copper tungsten series are widely used in high voltage circuit breaker
3 Silver tungsten carbide,silver tungsten carbide graphite machine is mainly used for current load high switch device,like the breaker,leakage switch.In many cased,it is used with silver nickel or silver tungsten carbide.
4. Silver nickel graphite series are widely used in universal type breaker, such as DW45 ec,match with the silver tungsten electrical contact
5 Silver graphite machine is mainly used for protection switch,like miniature circuit breaker,leakage protection switch or engine protection switch,and the matching contact is usually silver nickel or copper
Copper Tungsten
