630 A MCCB with ETU320 — interrupting capacity and thermal derating
The Siemens 3VA2463-6HL32-0AC0 is a SENTRON 3VA2 molded case circuit breaker rated for continuous current of 630 A at 40 °C, with a 3-pole configuration and an ETU320 electronic overcurrent release. Its interrupting capacity reaches 242 kA at 240 V and 187 kA at 415 V, dropping to 9 kA at 690 V — per the datasheet, the 690 V figure is the low-end bound for this frame, so verify your available fault current at that voltage before specifying. The thermal derating curve is published: at 50 °C the continuous rating drops to 593 A, at 60 °C to 557 A, and at 70 °C to 520 A, which matters for a panel with elevated ambient near other heat sources.
Dimensions are 248 mm high by 138 mm wide by 110 mm deep. The 138 mm width is a 3-pole frame — check your existing DIN-rail or mounting-plate layout for that footprint.