The Siemens 3VA2225-5JP32-0KC0 is a 3-pole SENTRON molded case circuit breaker rated for line protection at 250 A continuous current, holding that rating flat from 40 °C up to 50 °C before it starts to derate — at 55 °C it's 238 A, at 60 °C it's 225 A, at 65 °C it's 213 A, and at 70 °C it's 200 A. That means in a warm panel you lose headroom fast; if your load pulls 240 A and the enclosure sits at 55 °C, this breaker is already at its limit. Breaking capacity is 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 5.1 kA at 690 V. At 690 V the 5.1 kA is modest; if your system runs 690 V with high fault current, this isn't the breaker for that bus. No undervoltage release, no phase-failure detection, no ground-fault monitoring module on this variant — those are separate add-on options.
Panel fit — footprint and wiring
In a multi-breaker lineup, factor that into the enclosure's thermal budget; a sealed stainless box with no fan will cook the trip unit electronics if you stack several of these at full load.
