It's configured as a line protection device — meaning the trip curve and accessories are set for feeder or main breaker duty, not motor protection. The interrupting ratings step down cleanly across voltage tiers: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V.
Above that, derate in roughly 2–3% steps per 5 °C: 612 A at 45 °C, 593 A at 50 °C, 575 A at 55 °C, 557 A at 60 °C, 538 A at 65 °C, and 520 A at 70 °C. If your panel internal ambient runs at 50 °C — common in a packed enclosure with drives — you lose about 6% of the headline ampacity.
The mechanical endurance of 15,000 operations is typical for a fixed-mounted MCCB used as a main disconnect; it's not designed for frequent switching like a contactor. The ETU320 release offers LSI protection (long-time, short-time, instantaneous) with adjustable pickups — no ground-fault or communication functions on this variant. Phase failure detection is not built in; that's handled upstream or by the motor protection relay.