It is a 3-pole unit rated 25 A continuous at 40 °C ambient, with a thermal derating curve: still 25 A at 50 °C, then 24 A at 55 °C, 24 A at 60 °C, and 23 A at 65–70 °C. The interrupting rating is the headline number: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. That means you can wire it to drop the breaker if control power fails, and get remote status of the breaker position and trip event — common for safety circuits or remote monitoring in a PLC panel.
Dimensions: 130 mm height, 76.2 mm width (3 inches), 70 mm depth. Power loss is 11 W maximum, so thermal rise inside the enclosure is manageable; no forced cooling needed for a single unit.