The 630 A full-scale rating means it protects a main feeder or large motor branch; the thermal derating curve drops to 450 A at 70 °C, so a hot panel costs you 180 A of headroom.
This MCCB delivers 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. At 690 V the 9 kA rating still clears a moderate fault, but it is not the part for high-fault 690 V switchgear.
Thermal performance and continuous current
Rated continuous current is 630 A at 40 °C ambient, derating stepwise: 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C. The 164.5 W maximum power loss means the breaker dissipates heat into the enclosure — factor that into panel ventilation if you are running near full load at elevated ambients.
Built-in protection and auxiliary functions
The communication function allows integration into a monitoring network, though the protocol is not specified in this listing. The basic switch variant is 3VA2463-6JQ32-0AA0, which omits the UVR and aux switches.