It carries a 187 kA interrupting capacity at 240 V, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 4.5 kA at 690 V — that SCCR curve tells you where this breaker has headroom and where it doesn't.
Above that it steps down: 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. Max power loss is 48 W, which matters for enclosure heat calculations.
Three-pole construction. If you're swapping into an existing panel, check the busbar spacing and the auxiliary switch wiring — this one ships with three HQ aux switches pre-installed.