What is the applied voltage range for the nominal voltage rating of a contactor?

The applied voltage range for a contactor's nominal voltage rating is typically defined to ensure reliable operation and to prevent overheating or malfunction. The correct choice specifies a range of 85% to 110% of the nominal voltage. This range allows for tolerances in voltage supply while ensuring the contactor operates efficiently and remains within safe limits.

Operating within this range helps prevent over-voltage situations, which can lead to equipment failure or reduced lifespan due to increased wear on electrical components. Conversely, operating below the specified minimum voltage can lead to insufficient power to engage the contactor effectively, potentially leading to operational failures in the system it controls. This range is a standard in electrical systems to ensure that equipment can handle normal fluctuations in voltage that may occur in electrical supply networks.

The other options do not align with these operational standards for a contactor's nominal voltage, making them less suitable for ensuring reliable and safe performance.