630 A MCCB with high interrupting capacity
The Siemens 3VA1463-4EF32-0BH0 is a SENTRON molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C through 50 °C ambient, with a slight derating curve down to 583 A at 70 °C. That 630 A rating holds steady across the typical panel ambient range — you don't lose headroom until you're above 55 °C. The 3-pole design is configured for line protection, meaning it's set up to protect feeders and distribution circuits, not motor loads (no ground-fault monitoring version here). Breaking capacity is the headline: 121 kA at 240 V, 75.6 kA at 415 V and 440 V, 52.5 kA at 500 V, and 11.9 kA at 690 V.
Integrated auxiliary switch and undervoltage release
No communication module is fitted, so remote trip/close control would need external wiring to the UVR or a separate shunt trip. That 138 mm width is a 3-pole frame — fits standard Siemens SENTRON mounting patterns. The 110 mm depth includes the case body plus the rotary handle projection; verify clearance against enclosure depth and door swing before panel layout.