42. MOV Selection

Robert is designing surge protection for an industrial 3-phase 400VAC panel (230V Line-to-Neutral, 400V Line-to-Line, ±10% tolerance).
He needs MOVs placed across Line-to-Line (L-L) for differential mode protection.
The surge test requires each MOV to survive 6 kA (8/20 µs).
Four Littelfuse UltraMOV parts are available. Which one is the correct selection?
Note — Refer to the datasheet from DigiKey.