Two single phase Dual voltage Transformer as one Three phase open delta transformer

[PowerdT]

Please find the attached wiring connections.



I need help on what disconnect switch is required for this type transformer .
The transformers are:
T1: 1.5kva, 480/240V
T2: 1.5kva, 480/240V

For the primary protection, 480V, 10A heavy duty switch.

For the secondary protection, 240V, 10A heavy duty switch.

Does this sounds about right?