The 630 A frame carries a magnetic trip range from 945 A to 5 670 A — meaning the instantaneous trip threshold is adjustable within that band, so you set it to ride through motor inrush or transformer energization without nuisance tripping. Breaking capacity runs 121 kA at 240 V AC, 75.6 kA at 415/440 V, 52.5 kA at 500 V, and 9 kA at 690 V; that covers most low-voltage distribution bus faults without cascading upstream.
The 630 A rating holds only at 40 °C ambient. Above that, derate linearly: 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. Maximum power loss is 162 W, so factor that into the enclosure thermal budget.
Ground-fault monitoring and communication
This MCCB includes ground-fault monitoring via summation current formation on L + N conductors — it measures the vector sum of line and neutral currents to detect leakage to earth. Communication function is onboard, so it can report status and trip events to a higher-level control system without an add-on module. No undervoltage release or voltage trip fitted on this variant.