What this MCCB delivers — and what the ratings mean for your panel
The Siemens SENTRON 3VA2225-6HL32-0AC0 is a 3-pole molded case circuit breaker rated for line protection, carrying a continuous current Iu of 250 A at 40 °C through 50 °C, then derating to 213 A at 70 °C. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V and 440 V, dropping to 121 kA at 500 V and 6 kA at 690 V. That 242 kA at 240 V means this breaker can clear a fault at the full available short-circuit current of a large industrial service entrance without the arc flashing over — it's sized for high-fault panels where a standard MCCB would fail closed. The overcurrent release is an ETU320 electronic trip unit — no voltage trigger, no undervoltage release, no ground-fault monitoring. It's a straight line-protection breaker: thermal-magnetic replacement with adjustable long-time, short-time, and instantaneous pickups. The 48 W maximum power loss at full load matters for enclosure heat budgeting; if you're packing multiple breakers in a sealed panel, that's the number to derate around.
Integration and mounting — fits a standard MCCB footprint
Dimensions are 181 mm high, 105 mm wide, and 86 mm deep. The 105 mm width is three-pole standard for this class — it occupies the same DIN-rail or panel-mount slot as other 250 A frame MCCBs. The IP40 front protection means the breaker face is sealed against tools and fingers but not washdown; install it in a dead-front enclosure or behind a gland plate. Two auxiliary switches (HQ type) are built in — no separate aux kit needed for status feedback to a PLC or annunciator. The basic switch variant (3VA2225-6HL32-0AA0) is the underlying mechanism; this order code adds the aux switches at the factory.