The breaking capacity is the headline: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V.
The breaker occupies a 105 mm wide, 181 mm tall, 86 mm deep footprint — standard for a 3-pole SENTRON 3VA frame in this rating class. The supplied basic switch carries order code 3VA21107MS320AA0, so the internal switching mechanism is a known subassembly for replacement without pulling the whole breaker.
Undervoltage release and auxiliary release
That's typical for motor protection circuits where a brownout or phase-loss condition should drop the load rather than let the motor single-phase. There is no trip indicator, no voltage trigger, no communication function, no phase failure detection, and no ground-fault monitoring on this version — it's a clean electromechanical MCCB with UVR only.