630 A MCCB with 121 kA interrupting capacity
The Siemens SENTRON 3VA1463-4EF32-0HC0 is a 3-pole molded case circuit breaker (MCCB) rated 630 A at 40 °C ambient, with a maximum interrupting capacity of 121 kA at 240 V AC. That interrupting rating drops to 75.6 kA at 415 V and 440 V, 52.5 kA at 500 V, and 11.9 kA at 690 V — so the application voltage determines the fault-clearing capability you can rely on.
The 630 A rating holds up to 50 °C ambient; above that, the continuous current derates linearly — 618 A at 55 °C, 607 A at 60 °C, 595 A at 65 °C, and 583 A at 70 °C. Maximum power loss is 192.9 W at rated current.
Mounting dimensions and auxiliary options
Physical footprint: 248 mm height, 138 mm width, 110 mm depth — fits standard panel cutouts for 3-pole MCCBs in this frame size. Communication function is absent, so this is a standalone thermal-magnetic breaker for hardwired distribution.