It sits in the SENTRON family, which covers the compact to high-performance range of Siemens MCCBs.
Breaking capacity across voltages — the real-world read
Breaking capacity drops as voltage rises: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. For 400 V class systems (common in European industrial panels), the 121 kA figure gives comfortable headroom for most transformer sizes up to 2 MVA.
Thermal derating — don't trust the nameplate alone
The 250 A rating holds up to 50 °C ambient. Above that, it derates linearly: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, 213 A at 70 °C.
That's enough status feedback for a PLC to know the breaker position and fault state without extra wiring. The undervoltage release is absent on this code — if you need UVR for safety circuits, this isn't the variant.
Four poles mean it occupies the full width of a typical 600 mm wide panel section; plan your bus bar takeoffs accordingly.