Based on this product's specifications, here are some alternatives and similar models
Adapter CEE 16A 400V to 220V Schuko, Riff, model CEE/16A, 16 A, 400 V to 230 V
Summary description:
Riff Adapter CEE 16A 400V to 220V Schuko (model CEE/16A) converts a 3-phase CEE 16A 400V supply to a single-phase Schuko 220–230V outlet. Designed for connecting standard 220–230V Schuko devices to a CEE 16A power source, it supports a 16 A rating and is used for temporary power connections on sites, events, or workshops. Suitable for portable appliances within the adapter's current limit.