What this MCCB does and the rating that matters
The interrupting capacity is what decides its fit in a distribution board: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V.
Thermal derating and trip unit
At 55 °C it derates to 238 A, then 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C.
That 105 mm width is three-pole wide — standard for a 250 A frame in a distribution board. Communication function is built in, and a motor-drive extension is optional for remote tripping or re-closing.
Lifecycle stage is marked as current — meaning Siemens still lists it as an active catalog number with no announced end-of-life. That is the cleanest procurement scenario: no LTB window to chase, no successor to qualify. If you are freezing a BOM for a multi-year panel run, this is a stable line item.