The Siemens SENTRON 3VA2225-5HN32-0CA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current, with a breaking capacity of 187 kA at 240 V AC — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream.
This MCCB delivers 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.
Rated 250 A from 40 °C to 50 °C ambient; above that, derate linearly to 213 A at 70 °C. Maximum power loss is 50.5 W — plan ventilation or spacing in a sealed enclosure to keep internal temperature below the 70 °C operating limit.