It's a 3-pole unit rated 400 A continuous at 40 °C, with a full-scale adjustment range from 80 A up to 400 A — meaning you dial in the actual trip threshold to match the downstream load, not just the frame size. Breaking capacity is the headline: 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. The comms port means it can talk to a BMS or PLC for remote trip indication and load monitoring, though the exact protocol isn't specified here.
At 55 °C it drops to 375 A, at 60 °C to 350 A, at 65 °C to 325 A, and at 70 °C to 300 A. Maximum power loss is 98.5 W at rated current — that's the heat the breaker dumps into the panel. For a multi-breaker lineup, that adds up; factor it into your enclosure ventilation or forced-air cooling budget.
The 248 mm height and 110 mm depth are within the envelope for most distribution boards and motor control centers.
As a Siemens SENTRON product, this MCCB carries the expected certifications for industrial distribution: IEC 60947-2 (the global standard for MCCBs), likely UL 489 listing for North American panels, and CE marking for European installations. RoHS and REACH compliance documentation is standard from Siemens for this active series.