The MGP0634X is a Schneider Electric PowerPacT 4 molded case circuit breaker (MCCB) with 4 poles (3P + N), rated 63 A at 40 °C, for distribution in panelboards up to 630 A. It uses a thermal-magnetic TM-D trip unit providing LI protection — thermal overload (L) adjustable 44.1...63 A and fixed magnetic short-circuit (I). Rated operational voltage is 415 V AC 50/60 Hz with an insulation rating of 800 V and impulse withstand of 8 kV. It is panel-mounted, fits both horizontal and vertical orientations, and occupies 4 module spaces (35 mm per module). The toggle control type gives clear visual indication of the contact position.
For a BOM freeze or replacement project, the official successor within the PowerPacT range should be verified against your panelboard's mounting and busbar pattern. The MGP0634X is isolation-capable per BS EN 60947-2, so any substitute must carry the same isolation marking if the application requires it.
The breaker complies with BS EN 60947-2, the standard for low-voltage switchgear and controlgear — circuit breakers. It is suitability for isolation conforming to that standard, meaning it provides a visible break and meets the touch-safe gap requirements when open.