It carries 3 poles, rated 400 A continuously from 40 °C all the way up to 70 °C without derating, which is unusual: most breakers start dropping current above 40 °C, so this one holds full rating in a hot enclosure. The interrupting capacity is 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V — meaning it can safely clear a fault up to those levels depending on the system voltage. A 5 kA short-time rating (limited to 1 s) supports selective coordination downstream.
Dimensions are 110 mm deep, 138 mm wide, 248 mm tall — a standard 3-pole MCCB footprint for a 400 A frame.