The high 220 kA figure at 240 V means it can sit at the service entrance of a high-fault industrial panel without needing a current-limiting upstream fuse; the 154 kA at 415 V covers the typical 400 V-class main breaker slot. If your system fault current exceeds these at the point of installation, you need a current-limiting device ahead of it or a higher-rated frame.
Above that it starts to derate: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C.
Dimensions: 158 mm height, 140 mm width, 70 mm depth. Verify the UVR coil voltage against your control circuit before wiring.