The breaking capacity is 121 kA at 240 V AC, 75.6 kA at 415 V, and 52.5 kA at 440 V — figures that tell you it can handle high-fault-current scenarios like large transformer secondaries or main feeders in industrial switchgear. At 500 V it still interrupts 17 kA; at 690 V, 11.9 kA. The continuous current holds at 250 A up to 50 °C, then derates to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C — a thermal curve you need if the breaker sits in a warm enclosure or next to other heat sources.
The 250 A frame size and 3-pole configuration are the primary fit check: this breaker goes into a 3-phase feeder or large motor circuit.
The 3VA1225-4EF32-0BC0 is a panel-mount MCCB.