... kinds of omnipotence breakers, plastic breakers, heavy charge AC/DC contactor,other switches.(2)CuW seriesWidely used in high ... with AgNi ,AgWC together.(4)AgNi seriesWidely used in DC/AC relay, designation switch, contactor, light switch, thermal controller ... , contactor, middle and small capacity low voltage breaker, DC/AC switch, drive protective switch, creepage protective switch etc.Production ...