Its ETU320 electronic trip unit handles overload and short-circuit curves without a communication module or phase-failure detection — this is a straight line-protection breaker, not a power-monitoring device. The 242 kA breaking capacity at 240 V (187 kA at 415 V, 121 kA at 500 V, 6 kA at 690 V) gives serious fault-current headroom for distribution panels downstream of large transformers. An integrated undervoltage release (UVR) is built in; auxiliary contacts are not included on this variant.
Thermal derating — the real-world current limit
Above that it steps down: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. If your panel ambient runs 60 °C, you're sizing for 232 A continuous, not 250.