... rivet etc which are widely used in Relays, Switches, Breakers Thermostats and other Electro-mechanical Devices. We also can ... 3. AgZnO Usage: Mainly used in circuit breakers, especially in universal circuit breakers. Other fields of application are motor protective ... switches, residual current circuit breakers and AC relays.4. AgCuOUsage:AgCuO contact materials are ...