Rating and selection
The Siemens 3VA2225-6JP32-0DC0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, with a 3-pole configuration designed for line protection. Its breaking capacity reaches 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V — so the SCCR you can declare downstream depends on the system voltage you're coordinating.
Above that, the continuous current derates linearly: 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. Maximum power loss is 50.5 W.
