The Siemens SENTRON 3VA2225-5HN32-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 250 A and a breaking capacity of 187 kA at 240 V AC.
Rated continuous current holds at 250 A from 40 °C through 50 °C ambient, then derates to 241 A at 55 °C and 213 A at 70 °C — no headroom loss in a typical 40 °C panel, but if your enclosure runs hot, check the derating curve. Breaking capacity drops with voltage: 121 kA at 415 V and 440 V, 79 kA at 500 V, and 5.1 kA at 690 V.
Integrated accessories and panel fit
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — standard SENTRON 3VA frame size for 250 A, mounts on a DIN rail or panel-mount plate in a distribution board or MCC bucket.