QNC1K series QNC1K series of small contactors are applicable to the circuits with AC 50Hz or (60Hz) rated insulation voltage of 690V and rated working current of 06 ~ 12a when the rated working voltage reaches 380V under the use category of AC-3. They are used for remote connection and disconnection of circuits, frequent on-off and control of AC motors and electromagnetic coils. The contactors are combined with appropriate thermal overload relays to protect the circuits that may have overload.