The Siemens SENTRON 3VA2225-6HL42-0AA0 is a 4-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with an ETU320 electronic overcurrent release. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V, which puts it squarely in the high-fault category for industrial main feeders or large sub-distribution boards. The 250 A frame holds that rating steady up to 50 °C before derating begins — at 55 °C it's still good for 241 A, and at 70 °C it's 213 A. That thermal curve is what you need for the selectivity study, not just the headline number.
What the ratings mean for your panel
The 242 kA SCCR at 240 V tells you this breaker can safely interrupt a fault that large without welding contacts or cascading upstream — critical for a service-entrance or main-tie application where available fault current is high. At 415 V it still handles 187 kA, so it's equally at home in 400 V industrial distribution. The 4-pole design makes it suitable for three-phase plus neutral protection, common in European TN-S or TN-C-S systems. The ETU320 release is an electronic trip unit with adjustable long-time, short-time, and instantaneous settings — you dial in the protection curve rather than swapping thermal elements. No undervoltage release, no ground-fault monitoring, and no communication module on this variant, so if you need those functions you're looking at a different order code in the 3VA family.
Integration into the enclosure
140 mm wide, 181 mm tall, 86 mm deep. Front IP40. Maximum power loss 48 W. Operating range -25 °C to 70 °C; storage -40 °C to 80 °C.