The Siemens SENTRON 3VA2463-7HL32-0BA0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with a breaking capacity of 330 kA at 240 V and 242 kA at 415 V — high enough to handle large fault currents upstream in a distribution panel without cascading failure. Designed for line protection (feeder duty), this MCCB is sized for main incomer or large subfeed applications where selectivity and high interrupting capacity are non-negotiable.
Thermal derating — plan the real ampacity
At 50 °C it derates to 593 A, at 60 °C to 557 A, and at 70 °C to 520 A. If the panel runs hot — common in enclosed switchgear or near transformers — use the derated figure for your BOM ampacity, not the 40 °C number.
Breaking capacity by voltage — where it fits
At 240 V the MCCB interrupts 330 kA; at 415 V and 440 V it holds 242 kA; at 500 V it drops to 187 kA; at 690 V it is 9 kA.