The Siemens SENTRON 3VA2225-8HL32-0AJ0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, designed for line protection in distribution panels. It carries a short-circuit breaking capacity of 440 kA at 240 V, 330 kA at 415 V, and 220 kA at 500 V, with 52.5 kA at 690 V — enough to handle high-fault scenarios upstream in an industrial plant.
What the ratings mean for fit
The 250 A continuous rating holds steady from 40 °C up to 50 °C ambient — no derating needed in a typical warm panel. Above that it drops to 241 A at 55 °C and 213 A at 70 °C, so if your enclosure runs hot you need to account for that headroom. The trip unit adjusts between 375 A and 2 500 A (the magnetic/instantaneous range), which covers most feeder and large motor circuits. At 86 mm deep, 105 mm wide, and 181 mm tall, it fits a standard MCCB footprint on a DIN rail or bolted to a backplate; wiring space is adequate for 250 A cable lugs.
Panel integration notes
Mounts on DIN rail or bolts directly to a backplate. The 105 mm width takes up three standard 35 mm module spaces — leaves room for adjacent breakers or contactors in a multi-pole lineup. Terminal design accepts copper or aluminum lugs up to the rated current; no special adapter required. The trip indicator is present, undervoltage release is not fitted, and there is no ground-fault monitoring version on this variant.