At 240 V it interrupts 220 kA — enough for a high-capacity transformer secondary. At 415 V it still clears 154 kA, and at 440 V it handles 121 kA.
Three-pole construction, 76.2 mm wide (3 in), 130 mm tall, 70 mm deep. That depth is the dimension that catches panel builders — at 70 mm it clears most standard gland plates and backpanels without a sub-panel spacer. Power loss is 17.3 W maximum at rated load. In a sealed, uncooled enclosure that heat adds up; account for it in your thermal budget if the panel packs multiple breakers in a row.