Siemens 3VA1225-6GF42-0JH0 — 250 A SENTRON MCCB for Line Protection
Four poles handle three-phase plus neutral, with an interrupting capacity of 220 kA at 240 V AC — that drops to 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V, so the SCCR you can claim downstream depends on the system voltage you feed it.
Above that it derates: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. Footprint is 140 mm wide, 158 mm tall, 70 mm deep. That 140 mm width for a 4-pole 250 A frame is standard for SENTRON 3VA — it fits the same DIN-rail or mounting-plate cutout as other 3VA breakers in this frame class. The shunt trip adds a couple of terminals on the left side; plan for wire bending space around it.