... , plastic breakers, heavy charge AC/DC contactor,other switches.(2)CuW seriesWidely used in high voltage breaker.(3)AgWC,AgWCC ... are used with AgNi ,AgWC together.(4)AgNi seriesWidely used in DC/AC relay, designation switch, contactor, light switch, thermal controller ... metal seriesMainly used in middle and large capacity relay, contactor, middle and small capacity low voltage breaker, DC/AC switch, ...