The Schneider Electric MGN02663 is an Acti9 D02 fuse-switch disconnector, 1P+N, rated 63 A. It's a panel-mount device for 35 mm symmetrical DIN rail, used to isolate and protect a single-phase circuit with neutral switching — common in distribution boards and sub-distribution panels where a fused disconnect is preferred over a breaker for high-fault or selective-coordination schemes.
The 63 A rating at AC-22A utilisation category (IEC 60947-3) means this switch handles mixed resistive and inductive loads up to that current — typical for general-purpose switching of distribution circuits, not motor starting (that would be AC-23A). The 400 V rated operational voltage (230...400 V AC 50/60 Hz) covers standard single-phase line-to-neutral and line-to-line supplies across European and many Asian grids. The D02 fuse size (15 x 36 mm) accepts standard cylindrical cartridge fuses with a GG or AM characteristic — GG for general-purpose cable/equipment protection, AM for motor-circuit backup. The 1P+N configuration switches the phase and breaks the neutral, but does not fuse the neutral; the neutral pole is a switching-only contact. IP20 rated. 6 kV rated impulse withstand voltage (Uimp).
Schneider lists the MGN02663 as obsolete. There is no direct drop-in replacement from the same manufacturer with the same D02 form factor and 63 A rating; a substitution would require a panel re-design or a parametric cross-reference check against current Acti9 or other Schneider fuse-switch ranges.
Occupies 6 x 9 mm pitches. Screw-clamp terminals accept 1.5...35 mm² rigid or 1.5...25 mm² flexible conductors.
Compliant with IEC 60269-1, IEC 60269-3, IEC 60947-1, IEC 60947-3, EN 60947-1, and EN 60947-3. Carries VDE quality label. The standards coverage confirms suitability for European low-voltage distribution installations where fuse-switch disconnectors are specified for isolation and short-circuit protection.