... control switches(FAg).2. AgNi Usage: Usually matched with argentine cadmium oxide and argentine carbon contact, AgNi ... contactor, voltage modulator, controller, starter switch for automobile, air circuit breaker, heavy –load relay, magnetic starter, vibrator rectifier, etc. ... Other fields of application are motor protective switches, residual current circuit breakers and AC relays.4. AgCuOUsage:AgCuO ...