What this 250 A MCCB carries — and where the rating matters
The interrupting capacity is the headline number here: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V.
Above that it derates: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C.
The UVR means the breaker trips if control voltage drops — standard for safety circuits where loss of pilot power should open the main contacts. The auxiliary switches give remote status indication; the trip alarm switch signals a fault trip separately from a manual open. No communication function onboard — this is a hardwired breaker, not a smart metering unit.
If you're swapping from a 3VA1110 frame (100 A class), the 3VA1225 is physically larger; verify the mounting footprint and busbar spacing before committing the panel layout.
Maximum power loss is 59.5 W at rated current. That's heat that stays inside the enclosure — factor it into your panel cooling calculation, especially if the breaker is grouped with other high-current devices.