According to the standard, Type A residual current protection is the absolute minimum requirement.
However, it is more important to determine whether the charging stations are equipped with a DC leakage sensor.

If they are, you can use Type A or, preferably, Type Asi.

If the charging station does not have a DC leakage sensor, you should use Type B.

Cascading or filiation can be applied between the downstream iC60 RCBO with reference A9D67432 and the upstream NSX250F circuit breaker.

Please refer to the tables in the supplementary technical information guide Selectivity, Cascading and Coordination on page 171 or A-165

Released for: Schneider Electric Belgium