FNH1-200K-A 200A High Speed NH1 Fuse. 200A High Speed thyristor protection AC Fuse.
NH (Blade) type in DIN01 size. 170A continuous rating in enclosed off-load power circuit isolator.

 

Ixt is 9.5kA²Sec peak at 400V.
Voltage rating is 690V AC maximum.
Heat loss is 34.5 Watts at 0.8 x nominal Current.