The Siemens 3VA2225-5KP42-0KD0 is a SENTRON molded case circuit breaker (MCCB) rated 250 A at 40 °C, in a 4-pole configuration with an ETU850 electronic trip unit. At 415 V the rating holds at 121 kA, and it still manages 75.6 kA at 500 V, so it covers most low-voltage distribution panels in North American and European installations.
At 55 °C it drops to 238 A, at 60 °C to 225 A, and at 70 °C to 200 A. The 86 mm depth and 140 mm width fit standard MCCB mounting footprints in distribution panels; front IP40 protection handles typical switchgear environments.