What this MCCB carries — and what it means for your panel
The Siemens SENTRON 3VA2225-6HL32-0CL0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, designed for line protection in distribution panels. The 250 A frame holds that rating flat from 40 °C through 50 °C, then derates to 241 A at 55 °C and 213 A at 70 °C — so if your panel ambient runs hot, you still get full rated current up to 50 °C without oversizing. Breaking capacity is where this breaker earns its keep in high-fault installations: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V. That 187 kA at 415 V means it can sit upstream of a transformer or a busway with fault current well into the medium-voltage range without needing a current-limiting fuse ahead of it. The unit ships with an undervoltage release (UVR) and a full auxiliary switch complement: 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ type). The basic switch variant is 3VA2225-6HL32-0AA0 — the -0CL0 suffix adds the UVR and the HQ alarm package, so if your BOM calls for those signals, this is the exact order code, not a base frame you'd have to field-fit.
Panel fit and integration
Dimensions: 181 mm high, 105 mm wide, 86 mm deep. The 105 mm width is a standard 3-pole MCCB footprint for this current class — it occupies three 35 mm DIN-rail modules plus a sliver for the auxiliary switch housing. The 86 mm depth means it clears a 120 mm deep enclosure backplate with room for rear-connected busbars. Power loss at rated current is 50.5 W maximum — factor that into your enclosure thermal calculation if you're stacking multiple breakers in a sealed cabinet.