The MGP2504XFO is a PowerPacT 4 basic frame — a 250 A, 4-pole panel-mounted breaker frame rated 50 kA Icu and Ics at 415 V AC 50/60 Hz, with an 800 V rated insulation voltage and 8 kV impulse withstand. It ships without a trip unit, so you add the appropriate thermal-magnetic or electronic trip block separately. Designed for distribution in 250 A or 400/630 A panelboards, it meets BS EN 60947-2 and carries a Category A utilization rating, meaning it's intended for non-discriminative (non-selective) coordination — downstream faults clear it, but it doesn't guarantee selectivity with series devices.
The 8 kV impulse withstand (Uimp) covers transient overvoltages typical in industrial distribution. Mounting is backplate, horizontal or vertical, occupying 4 modules of 35 mm width each.