The Siemens SENTRON 3VA2225-7HN32-0BA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with a maximum interrupting capacity of 330 kA at 240 V. This is the line-protection variant, designed for main feeder or large subfeed applications in commercial and industrial distribution panels. The 250 A frame is the full-rated continuous current — no derating needed at 40 °C, though above 55 °C the rating steps down to 241 A and continues to 213 A at 70 °C. That thermal behavior matters if this breaker lands in a non-climate-controlled enclosure next to transformers or drives.
The interrupting capacity is what makes this breaker distinct: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V.
Dimensions are 181 mm height, 105 mm width, 86 mm depth. The 105 mm width is a 3-pole MCCB standard footprint — fits most Siemens SENTRON mounting plates and panelboard interiors. The 86 mm depth includes the handle and terminals; allow extra clearance for cable bending radius on the line and load lugs. No auxiliary switch is fitted as standard (design without), so if remote status indication is needed, a separate auxiliary switch block must be added to the breaker. The undervoltage release is wired separately from the main power path — confirm control voltage matches the UVR coil rating before commissioning.