The free space between the sockets placed horizontally on the power strip is approximately 45 mm. This allows slightly wide chargers to be inserted without any problems.
This is basically because the manufacturer itself does not provide any more precise information. The max. current is normally specified by the socket itself, which in Switzerland is max. 10A, which in turn should also be the basis for the product. The load itself is 2300W according to my information and comparison with similar products. But it is best to contact the manufacturer directly about this.
See also:
https://de.wikipedia.org/wiki/SEV_1011
https://de.wikipedia.org/wiki/Mehrfachsteckdose