The MGN02363 is a Schneider Electric Acti9 D0 fuse-switch disconnector — three poles, rated 63 A, designed for 230-400 V AC 50/60 Hz circuits. The 3-pole form factor handles three-phase loads: a motor branch, a lighting distribution board, or a sub-feed from a main switchboard.
The 63 A rated current (In) and AC-22A utilisation category per IEC 60947-3 tell you this part is built for switching mixed resistive and inductive loads — not just isolating. AC-22A covers on-load making and breaking of circuits with a mix of resistive and inductive elements, which is the typical duty for a fuse-switch in a distribution panel feeding motor starters or lighting contactors. The 1500-cycle electrical endurance and 8500-cycle mechanical endurance give a realistic service life for a panel that sees a few switching operations per shift; it is not a daily-break disconnect for a production machine. Rated insulation voltage (Ui) is 400 V, and the rated impulse withstand voltage (Uimp) is 6 kV — that 6 kV figure is the surge it can survive without flashover, matching typical IEC 60947-1 coordination levels for a 400 V distribution panel. The operating temperature range of -5 to 40 °C is standard for indoor panels; storage from -25 to 55 °C covers shipping and warehouse conditions.
Terminal and fuse details
Screw-clamp terminals accept 1.5 to 35 mm² rigid or 1.5 to 25 mm² flexible cable; wire stripping length is 14 mm, and the tightening torque is 3 N·m. The fuse size is 15 x 36 mm, D02 fuse-link format — the GG and AM curves are both listed, so you can fit either a general-purpose gG fuse for cable protection or an aM fuse for motor-circuit short-circuit backup. The 9-mm pitch per pole means the 3-pole unit occupies 81 mm of DIN-rail width, which is the standard Acti9 D0 footprint.