The Siemens 3VA2225-5HL42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, with a 4-pole configuration and an ETU320 electronic trip unit. It is designed for line protection in distribution panels where high interrupting capacity is required — 187 kA at 240 V and 121 kA at 415 V, tapering to 4.5 kA at 690 V.
The interrupting ratings are given per IEC/UL at multiple voltage levels: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. Continuous current holds at 250 A from 40 °C through 50 °C, then derates to 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C.