That 630 A figure is the thermal base — at higher ambient temperatures the breaker derates in steps: 612 A at 45 °C, 593 A at 50 °C, all the way down to 520 A at 70 °C. Interrupting capacity is the real safety gate. This breaker clears 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V.
Integration — footprint and auxiliary wiring
The breaker measures 138 mm wide, 248 mm high, and 110 mm deep. That depth matters for enclosure depth planning — a 150 mm deep enclosure leaves about 40 mm behind the breaker for wiring and gland clearance. The width is standard for a 630 A frame; verify the mounting footprint against your existing busbar or lug kit. The shunt trip (STL) is built in — part number 3VA9688-0BL30 for the integrated auxiliary trip. The supplied basic switch is 3VA2463-5HL32-0AA0.