The Siemens SENTRON 3VA2225-6HL32-0AE0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection duty. Its continuous current rating is 250 A, and it delivers a 242 kA interrupting capacity at 240 V AC — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream.
Interrupting capacity and thermal derating
Interrupting capacity drops with system voltage: 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V. That 4.5 kA figure at 690 V is the binding constraint for 690 V lineups — verify the available fault current stays under that threshold. Thermal derating is minimal up to 50 °C (full 250 A). Above that, the breaker linearly derates to 213 A at 70 °C ambient. In a crowded panel with multiple breakers ganged, that 70 °C ceiling is the practical limit for continuous load.
Dimensions and panel fit
Footprint is 105 mm wide by 181 mm tall by 86 mm deep. The 105 mm width is standard for a 3-pole MCCB in this frame size — fits existing SENTRON mounting bases and busbar systems without adapter plates.