What this MCCB carries and where it fits
The Siemens 3VA2225-6JQ32-0AH0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection at 250 A continuous, with a 3-pole configuration. Its breaking capacity hits 242 kA at 240 V and 187 kA at 415 V, dropping to 4.5 kA at 690 V — so it handles high-fault industrial mains up to 480 V class comfortably, but the 690 V figure tells you this isn't a 690 V primary breaker. The 250 A rating holds flat from 40 °C to 50 °C, then derates to 200 A at 70 °C; if your panel runs hot, size the load accordingly. It carries a communication function for remote monitoring or trip indication, plus 2 auxiliary switches and a trip alarm switch (HQ design) built in.
Physical fit and panel integration
Dimensions: 181 mm high, 105 mm wide, 86 mm deep. That's a 3-pole MCCB footprint compatible with standard Siemens SENTRON mounting — bolts into a panel or mounts on a mounting plate. The depth of 86 mm (3.39 in) means it clears most 200 mm deep enclosures with room for wiring gutters. Width at 105 mm (4.13 in) sets the spacing for busbar or cable lugs.
What the ratings mean for your application
The 250 A full-scale rating with a 50 A initial value (adjustable thermal-magnetic or electronic trip range) covers motor feeders, distribution panels, or large branch circuits. Power loss maxes at 48 W — factor that into enclosure ventilation if you're packing multiple breakers. Operating temperature spans -25 °C to 70 °C, storage from -40 °C to 80 °C, so it's fine for unheated electrical rooms or outdoor cabinets within that band. The basic switch variant is 3VA2225-6JQ32-0AA0 if you need the base unit without auxiliary switches.