Its headline rating is 125 A at 40 °C, meaning it carries that current continuously in a 40 °C ambient without derating; at 70 °C it still holds 114 A, which is the figure to check if the breaker lives in a hot enclosure next to other dissipating gear. At 415 V it still handles 75.6 kA, and at 690 V it drops to 11.9 kA. For a 480 V panel the relevant figure is the 415 V rating (the closest standard voltage below 480 V in the evidence), which covers most North American industrial service-entrance requirements. Three poles, 800 V rated insulation voltage.
Deployment context
This MCCB mounts on a DIN rail or directly to a backplate in a standard 3-pole footprint: 76.2 mm wide (3 inches), 130 mm tall, 70 mm deep.