What kind of rated voltage do devices interrupt under standard test conditions defined by interrupting rating?

The rated voltage of a device is the maximum voltage at which the device can safely operate while interrupting an electrical circuit under standard test conditions as defined by its interrupting rating. This rated voltage indicates the level of electrical stress a device can handle without sustaining damage or malfunction during operation. Typically, this includes considerations for dielectric breakdown as well as the ability to safely manage fault currents.

While options like high voltage, standard voltage, and nominal voltage may pertain to various contexts in electrical systems, they don’t specifically define the category under which devices interrupt. High voltage often refers to voltages above a certain threshold but does not correspond directly with the interrupting rating. Standard voltage may suggest a commonly recognized operating voltage but lacks specificity in defining performance. Nominal voltage refers to an approximate value that devices are designed to operate around but is not the specific figure that describes a device's interrupting capability.

Thus, "rated voltage" is the most accurate term used to indicate the specific voltage at which a device is tested to ensure that it can perform its interrupting function effectively under defined conditions.