The Schneider Electric DF2JA1501 is a blade fuse from the TeSys range, sized NH2 with a DIN form factor and an aM (accompanied motor) curve. It is rated 500 A at 500 V AC, supplied as a set of three. This fuse is designed for motor protection — the aM curve means it holds through motor inrush and clears on sustained overloads or short circuits.
The 500 A rating at 500 V AC sets the maximum continuous current and voltage the fuse can interrupt. The NH2 body size is a standard European fuse footprint — it fits NH2 fuse holders and switch-disconnectors common in industrial distribution panels. The aM curve is the key selection parameter: it coordinates with motor starters, allowing the fuse to pass starting current without nuisance blowing while still providing short-circuit protection.