What this MCCB carries — and what it means for your panel
The Siemens 3VA2225-5HL32-0DC0 is a SENTRON molded case circuit breaker rated for 250 A continuous current (Iu) across a 3-pole configuration. That 250 A holds steady up to 50 °C ambient; at 55 °C it derates to 241 A, at 60 °C to 232 A, and at 70 °C to 213 A — so if your panel runs hot near the top of a dense enclosure, use the 55 °C or 60 °C column for sizing, not the nameplate. The ETU320 electronic trip unit handles the overcurrent protection, and the breaker carries an undervoltage release (UVR) as standard, with two HQ auxiliary switches built in.
Breaking capacity — where the numbers matter
Short-circuit ratings here are not one-size-fits-all. At 240 V it interrupts 187 kA; at 415 V and 440 V it holds 121 kA; at 500 V it drops to 79 kA; at 690 V it's 5.1 kA. For a 480 V panel in North America (common industrial distribution), the relevant figure is the 500 V column at 79 kA — that's the one your coordination study needs. The insulation voltage rating is 800 V, so the breaker is physically built for 690 V systems even though the interrupting capacity falls off sharply above 500 V.
Panel fit and integration
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard 3-pole MCCB footprint for the 250 A frame class. It mounts on a DIN rail or can be screw-fixed to a backplate. The undervoltage release is wired separately; the two HQ auxiliary switches give you position feedback for your PLC or status lamp without needing an add-on module. Power loss at full load is 50.5 W max — account for that heat in your enclosure sizing if you're stacking several breakers side by side.