The DF2GGA1061 is a Merlin Gerin NH0-size cartridge fuse, AM type, rated 63 A at 690 V AC. It's a protection device — the kind that sits in a fuse-switch disconnector or fuse base on a distribution board, clearing overcurrents and short-circuits before they cook the cable or the load.
The NH0 form factor is the smallest of the standard NH fuse sizes — it fits NH0 fuse holders and bases, which are common in sub-distribution boards and smaller motor control centers. The AM type (aM, motor-protection characteristic) means it's designed to withstand motor inrush without nuisance blowing, while still clearing a fault fast enough to protect the motor circuit. The 63 A rating at 690 V AC tells you it's sized for a motor full-load current around 50-55 A, leaving headroom for starting current without exceeding the fuse's continuous rating.