Breaking capacity runs from 52.5 kA at 240 V down to 7.5 kA at 690 V, which gives selectivity headroom for most industrial service-entrance or sub-feed applications.
Fit and ratings
The 63 A frame at 40 °C holds flat to 50 °C, then drops 1 A per 5 °C step — useful to know if the breaker lives in a non-conditioned enclosure. The UVR means the breaker drops out on loss of control voltage — standard for safety circuits where a downstream contactor or PLC must not re-energise without deliberate reset.
Panel fit
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — standard 3-pole MCCB footprint for the 3VA frame. The auxiliary switch block and UVR are pre-assembled, so no field-stacking of accessories; the wiring diagram stays clean.