Breaking capacity — what the numbers mean for coordination
The 3VA2063-6KQ46-0AA0: The interrupting ratings span a wide voltage range: 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V. That 187 kA at 415 V is the figure most panel designers will use for selectivity studies — it tells you this breaker holds in under a fault that would take out a lesser device upstream. The minimum trip setting is 95 A, and the maximum is 756 A, which gives you a broad adjustment band for coordinating with downstream branch breakers.
Thermal performance and panel fit
This breaker holds its full 63 A rating all the way from 40 °C up to 70 °C ambient — no derating curve to chase in a hot panel. Power loss is 5.4 W maximum, which is manageable for enclosure heat calculations. The dimensions are 181 mm high, 140 mm wide, and 86 mm deep, so it fits a standard MCCB footprint on a DIN rail or panel-mount base. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Communication and monitoring features
This variant includes a communication function, which means it can report status and trip events to a higher-level control system — useful for remote monitoring in a plant SCADA setup. It also has a ground-fault monitoring version using summation current formation on L + N conductors, so it can detect leakage to ground without a separate GFCI module. The trip indicator is not present on this version, and there's no undervoltage release or voltage trigger built in.