The interrupting ratings are the headline here: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V. That's a high-interrupting-capacity (HIC) frame — it handles fault currents that would vaporize a standard MCCB. At 690 V it drops to 3.7 kA, which is still adequate for most 690 V motor circuits but confirms this breaker is optimized for 240–500 V systems. That's unusual; most breakers start tapering above 40 °C. The ETU850 compensates electronically.
The 3VA2 series replaced the older 3VL series a few years back. If you're retrofitting a 3VL panel, the 3VA2 footprint is slightly different — check the 181 x 140 x 86 mm dimensions against your existing mounting base.
Integration Notes
Power loss is 25.5 W maximum at rated current. The ETU850's communication module adds negligible draw. The trip indicator and undervoltage release are not fitted on this variant (no voltage trigger, no UVR), but the ETU850 supports external signaling via the communication bus.