Breaking capacity is the real selector here: 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. Thermal derating is published per ambient: full 250 A up to 50 °C, then 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 48 W, so factor that into your enclosure thermal budget if you're packing multiple breakers in a small cabinet.
Integration and connections
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — standard 3-pole MCCB footprint for the SENTRON 3VA2 frame. No undervoltage release or shunt trip is fitted on this variant. Communication function is present — the ETU850 supports optional communication modules for remote monitoring and parameterization, though the basic switch supplied is the 3VA2225-5KP32-0AA0. If you need ground-fault monitoring or phase-failure detection, those are not included on this version; you'd step up to a different suffix.