The MGN15708: For a project buyer with a BOM freeze or a commissioning window to protect, this obsolete status is the critical decision point: the part cannot be ordered fresh from Schneider.
The 14 x 51 mm fuse size and AM GG curve are specific: this is a gG (general-purpose) fuse link for cable and equipment protection, not a motor-protection (aM) curve. If your application requires motor starting with inrush, verify the fuse coordination — the AM GG designation here indicates the fuse-link class the holder accepts, not the curve of the included fuse. Compliance with IEC EN 60947-3 means the disconnector is certified for isolation and switching under load, with defined making and breaking capacities.
The 26.5 mm width (3 x 9 mm pitches) occupies three modular spaces, so factor that into your DIN-rail fill calculation. Screw-clamp terminals accept 2.5 to 25 mm² rigid or flexible cable — sized for the 50 A rating. The non-padlockable locking option means it cannot be locked off for isolation; if padlocking is required for your safety procedure, this is not the right variant.
Sourcing reality for an obsolete part
Because MGN15708 is obsolete, the normal supply chain is closed. If you are at the design stage and can choose an alternative, look at current Acti9 fuse-disconnector variants with the same 1N pole configuration and 14 x 51 mm fuse acceptance. The key parameters to match are the 690 V AC rating, the 50 A capacity, and the DIN-rail footprint. A sourcing specialist can help identify the closest active equivalent once the BOM context is known.