Its 3-pole construction handles three-phase loads up to 250 A without derating up to 50 °C — above that, the thermal curve drops to 238 A at 55 °C and 200 A at 70 °C, so panel ambient temperature directly governs the usable ampacity. Breaking capacity varies sharply with line voltage: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V.
Maximum power loss is 50.5 W — plan for that heat in a sealed enclosure; it's not extreme for a 250 A frame but enough to matter in a densely populated panel.
