It carries a 330 kA breaking capacity at 240 V, stepping down to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V — the full fault-interruption curve for a high-capacity distribution main. The 630 A rating at 40 °C derates with ambient temperature: 612 A at 45 °C, 593 A at 50 °C, 575 A at 55 °C, 557 A at 60 °C, 538 A at 65 °C, 520 A at 70 °C. This MCCB uses an ETU350 electronic trip unit.
Panel integration
The breaker measures 138 mm wide, 248 mm high, and 110 mm deep — a standard SENTRON 3VA2 frame footprint for 630 A class.
Operating conditions
Maximum power loss is 164.5 W — account for heat dissipation in the enclosure sizing. Mechanical endurance is 15,000 operations. No communication function, phase failure detection, or ground fault monitoring is built in — the ETU350 handles overcurrent protection only.