The Schneider Electric MGP6304X is a PowerPacT 4 molded case circuit breaker (MCCB) with 4 poles (3P + N), rated 630 A at 40 °C, and built to BS EN 60947-2 for distribution duty in panelboards up to 400/630 A. Its MicroLogic 2.3 electronic trip unit provides LSoI protection — thermal overload (L), short-time short-circuit with fixed delay (So), and instantaneous short-circuit (I) — with an adjustable thermal range of 252 to 630 A. Rated operational voltage is 415 V AC at 50/60 Hz, with an insulation voltage of 800 V and impulse withstand of 8 kV.
If you need a like-for-like replacement, the PowerPacT 4 range has been superseded by newer MCCB families; verify the specific mounting and trip-unit requirements for a drop-in fit.
Panel-mounted on a backplate, this MCCB accepts horizontal or vertical orientation and occupies a 6-module (35 mm per module) footprint. The toggle control and front-accessible MicroLogic trip unit make it straightforward for panel builders to wire and commission. Electrical endurance is rated at 8000 cycles at 440 V at rated current (In/2) and 4000 cycles at full In; mechanical durability is 15,000 cycles.