It carries a continuous current rating of 250 A at 40 °C and holds that rating through 50 °C, then derates to 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C — so in a warm enclosure you lose about 15% of headroom by 70 °C. The 4-pole construction handles three-phase plus neutral or a fourth pole for dual-feed applications. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. The shunt trip lets a safety PLC or emergency-stop circuit open the breaker remotely, which is the usual reason a buyer picks this suffix over the base 3VA2225-5HN42-0AA0.
Dimensions are 181 mm height, 140 mm width, 86 mm depth.