The Siemens 3VA2225-6KP32-0BL0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, with an adjustable thermal-magnetic trip unit covering 375 A to 2500 A — so it protects feeders and large motor loads where the fault current can reach 242 kA at 240 V or 187 kA at 415 V.
The interrupting capacity drops from 242 kA at 240 V to 187 kA at 415/440 V, then to 121 kA at 500 V, and finally to 4.5 kA at 690 V — the 690 V figure is low enough that you need to verify the available fault current at that voltage before specifying. Continuous current derates with ambient temperature: it holds 250 A up to 50 °C, then steps down to 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C — so in a hot panel you lose 20 % of the rating. The adjustable trip range (375–2500 A) means you can set the magnetic pickup to coordinate with downstream devices without changing the breaker frame.
Panel integration and auxiliaries
A communication function is built in — this variant supports remote monitoring and control, which saves wiring on a distributed line-up.
Maximum power loss is 50.5 W, so factor that into the enclosure thermal budget if you are grouping several breakers.