The Siemens SENTRON 3VA2225-6JP32-0JL0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, with a breaking capacity of 242 kA at 240 VAC. This is the line-protection variant with integrated communication function, a shunt trip release (STL), and a full auxiliary switch complement: 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ. The basic switch core is order code 3VA2225-6JP32-0AA0. It carries a voltage trigger and a trip indicator; no undervoltage release or ground-fault monitoring is fitted.
Breaking capacity and selectivity headroom
The 242 kA at 240 V and 187 kA at 415 V ratings put this MCCB in the high-interrupting category — it clears bolted faults at the service entrance or large motor control center without cascading upstream. At 500 V the rating drops to 121 kA; at 690 V it holds 4.5 kA, which still covers most 690 V distribution faults. For a site electrical engineer sizing selective coordination, the 250 A continuous frame and the 375 A minimum to 2 500 A maximum trip range give enough band to coordinate with downstream 100 A or 160 A MCCBs.
Thermal derating and enclosure fit
The breaker holds its full 250 A rating up to 50 °C. Above that it derates linearly: 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. The operating temperature range is -25 °C to +70 °C; storage range is -40 °C to +80 °C. Maximum power loss is 48 W. Mounting dimensions: 105 mm wide, 181 mm tall, 86 mm deep — fits a standard MCCB footprint on a DIN rail or panel-mount adapter. A panel OEM should account for the 48 W heat dissipation in the enclosure thermal budget, especially when grouping multiple breakers.