The Siemens SENTRON 3VA2463-5HL32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for 630 A continuous current (Iu) at 40 °C, with an ETU320 electronic trip unit. That 630 A figure is the base rating — the breaker can carry that load continuously in a 40 °C ambient without tripping. Above 40 °C, the current must be derated: at 50 °C it handles 593 A, at 60 °C it handles 557 A, and at 70 °C it handles 520 A. For a panel running hot near the top of a sealed enclosure, that derating curve is what decides whether this frame size works or you need to step up. Breaking capacity is the other headline: 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.
Trip unit, auxiliaries, and release options
The ETU320 is an electronic overcurrent release — it provides LI (long-time and short-time) protection with adjustable pickups and time delays, plus instantaneous (I) protection. Latching endurance is rated at 15 000 cycles, which is typical for a fixed-mounted MCCB in a distribution board where it is not switched daily.
Dimensions: 248 mm height, 138 mm width, 110 mm depth. No communication function or phase-failure detection on this variant — it is a straight line-protection breaker.