That 630 A is the continuous current at 40 °C ambient — derate it if your panel runs hotter: at 50 °C it carries 570 A, at 60 °C it carries 510 A, at 70 °C it carries 450 A. The interrupting capacity shifts with system voltage: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V.
Trip unit and protection range
The electronic trip unit is set for line protection (overload and short-circuit) with a full-scale value of 630 A and an adjustable I²t pickup range from 945 A minimum to 5 670 A maximum. That range lets you dial in the magnetic trip for cable protection or to coordinate with downstream breakers. A trip indicator is present, and the breaker includes a communication function — the 3VA family supports PROFIBUS or PROFINET via a plug-in module, so you can pull status and fault data into a control system without climbing the panel.