The DF2FGN20 is a DIN NH000 blade fuse from the Schneider Electric TeSys GS range, rated 20 A and 690 V AC with a gG (general-purpose) characteristic. It comes as a set of 10 fuses without striker. The gG curve means it handles both overload and short-circuit protection for general distribution and motor circuits — a standard choice for branch-circuit protection in industrial panels.
This part is marked obsolete by the manufacturer. There is no official successor listed in the record. If you are freezing a new design, the TeSys GS range still offers active NH fuse-lines; a parametric review against your voltage, current, and curve requirements will identify a current-production equivalent.
The NH000 form factor is the smallest DIN NH blade size, fitting standard NH fuse holders and switch-disconnectors in the TeSys GS family. The gG curve provides time-delay characteristics suitable for motor-starting inrush — a common requirement when protecting motor feeders.