250 A continuous, 242 kA breaking — the SCCR anchor for a distribution backbone
The Siemens SENTRON 3VA2225-6HN32-0HL0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, holding that same 250 A rating all the way up to 50 °C before it starts to thermally derate — 241 A at 55 °C, 232 A at 60 °C, down to 213 A at 70 °C. That thermal headroom means this breaker doesn't force a upsized frame just because the panel runs warm in a packed enclosure. Breaking capacity is the headline here: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 6 kA at 690 V. That's enough status feedback for a PLC to map the breaker position, trip event, and electrical alarm separately.
Integration — panel fit and wiring considerations
Dimensions: 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint for the 250 A frame class. The 86 mm depth matters when the breaker mounts in a distribution panel with a shallow gland-plate clearance or a rear-connected bus system; verify the panel's internal depth against that figure before committing the layout. Maximum power loss is 48 W. The 70 °C operating ceiling matches the top end of the thermal derating curve, so if the panel ambient hits 70 °C the breaker is still within its rated operating range at 213 A.