At 415 V and 440 V it still holds 242 kA, and at 690 V it's 52.5 kA, so it handles high-fault scenarios in industrial distribution panels where upstream transformers or large motors can dump serious energy into a fault. The electronic trip unit is an ETU350M, which gives adjustable thermal-magnetic curves plus phase-failure detection — that last bit matters for motor protection circuits where a lost phase can burn out a winding before a standard thermal overload reacts.
At 55 °C it derates to 60.48 A, at 60 °C to 59.22 A, at 65 °C to 57.96 A, and at 70 °C to 56.7 A. Maximum power loss is 75 W, which is typical for a 63 A MCCB with an electronic trip unit. That heat has to leave the enclosure; plan ventilation or a larger cabinet if you're grouping several of these side by side.
Built-in shunt trip and auxiliary options
That's useful for emergency-stop circuits or remote shutdown from a PLC. The integrated auxiliary trip is a separate order code (3VA9688-0BL32), so if you need an alarm contact or status feedback, that's an add-on. If those are required, you'd step up to a different suffix in the 3VA2 family.
Verify the gland plate clearance for the 86 mm depth, especially in shallow wall-mount boxes.