What this 3VA2 is — and what it isn't
Rated continuous current Iu is 63 A, and it holds that rating from 40 °C up through 50 °C without derating; at 55 °C it's still at 60.48 A, and at 70 °C it's 56.7 A, so the thermal headroom is generous for a 63 A frame. The ETU310M electronic trip unit handles the overcurrent release, and there's an undervoltage release (UVR) integrated — the auxiliary release design is UVR, and the supplied basic switch is order code 3VA2163-7MS36-0AA0 with an integrated auxiliary trip of 3VA9608-0BB24. No communication function, no phase failure detection, no ground fault monitoring — this is a straightforward motor-protection MCCB, not a networked power monitor.
SCCR — what the interrupting ratings mean for panel coordination
The interrupting capacity is given across five voltage points, which is what you need for selectivity studies. At 240 V it's 330 kA; at 415 V and 440 V it's 242 kA; at 500 V it's 187 kA; at 690 V it's 52.5 kA.
Mechanical endurance is 20,000 operations — adequate for motor starting duty where the breaker isn't cycled daily as a disconnect.