What does increased touch protection add to this Schuko cover?

Increased touch protection (erhoehter Beruehrungsschutz) means the cover plate is designed to prevent accidental contact with live terminals behind the socket insert. For Schuko sockets installed in publicly accessible areas — schools, hospitals, commercial lobbies — VDE regulations require this elevated safety rating.

How does the 5UH1202 differ from the standard 5UH1083?

Both are 55x55mm DELTA i-system Schuko cover plates in aluminum metallic. The 5UH1202 adds increased touch protection. If your installation does not mandate this rating, the 5UH1083 offers the same finish without the safety premium.