722.411.4.1 (iii) requires a device to provide isolation of all live conductors. An external device should be selected from Table 537.4, which includes contactors if the contactor is marked with the isolation symbol (I have been unable to find a contactor with this marking, so far).
An equivalent means of functionallity can be included within the charging equipment. This is usually a contactor. Does this contactor need to compy with Table 537.4, or is it sufficient to select a contactor that: meets the overvoltage category; has at least 3mm of contact separation and has been tested to BS EN 60947-4-1?