The Siemens SENTRON 3VA2225-7HL32-0BL0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with an ETU320 electronic trip unit configured for line protection. The interrupting rating hits 330 kA at 240 V, stepping down to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 6.3 kA at 690 V.
Above that, it derates: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C.
Standard SENTRON 3VA footprint — mounts on a mounting plate or DIN rail adapter. The UVR coil and auxiliary contact block are factory-integrated; no field wiring of separate accessories needed for the alarm and switch functions listed.
What the ETU320 trip unit does
The ETU320 is an electronic overcurrent release for line protection. It provides adjustable long-time, short-time, and instantaneous pickup settings, plus ground-fault alarm capability (though this variant ships without ground-fault monitoring).