The MGP2504NAX is a Schneider Electric PowerPact 4 switch disconnector, 4 poles, rated 250 A continuous. It's built for isolation duty per BS EN 60947-3, with a toggle handle and a visible contact position indicator. Rated operational voltage is 415 V AC; insulation voltage is 800 V AC. Utilisation categories AC-22A and AC-23A cover resistive and moderately inductive loads.
The 250 A rating is the continuous current at 415 V AC; it's sized for a 250 A panelboard or as a main isolator in a 400/630 A panelboard feeder. Short-time withstand current is 3500 A for 1 s or 3 s, and 1350 A for 20 s — that's the fault current the switch can hold closed without damage during a downstream breaker clearing. Making capacity is 4.9 kA peak, meaning it can close onto a short-circuit up to that level. IP40 keeps out tools and wires over 1 mm but not dust or water. Class II double insulation means no earth connection needed on the enclosure.
Backplate-mounted in a panel or enclosure. The 140 mm width and 161 mm height fit a standard distribution board footprint; depth is 86 mm. Toggle handle protrudes through the door. Use it as a main switch disconnector for a 250 A panelboard, or as a load-break isolator for motor control centres where the utilisation category matches the load type.