MCCB for high-fault panels
The Siemens SENTRON 3VA2225-6JQ32-0CC0 is a 3-pole molded case circuit breaker rated 250 A at 40 °C, designed for line protection in distribution panels. Its interrupting rating hits 242 kA at 240 V AC — that's the short-circuit current it can safely clear without welding contacts or rupturing the case, so it handles high-fault service-entrance or sub-feed positions where upstream transformer capacity is large. The 250 A continuous rating means it carries that load continuously at 40 °C ambient; above that, the thermal derating curve drops to 200 A at 70 °C, which matters if the breaker sits in a hot enclosure near other heat sources. This MCCB includes an undervoltage release (UVR) that trips the breaker if supply voltage drops below a set threshold — standard for safety circuits where a loss of control voltage must open the main disconnect. It also carries two auxiliary switches (HQ type) for remote status indication back to a PLC or annunciator panel. The basic switch variant is 3VA2225-6JQ32-0AA0; this -0CC0 suffix adds the UVR and the aux switches as factory-fitted options, so you don't have to field-install add-on modules.
Panel fit
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. That's a standard 3-pole MCCB footprint for a 250 A frame — it fits a typical DIN-rail or panel-mount base without crowding adjacent breakers. The 50.5 W maximum power loss at full load means the enclosure needs some ventilation or derating if packed tightly; a sealed stainless-steel box with no airflow will run hot, so plan for that in the thermal calculation.