The Siemens SENTRON 3VA2463-0HL42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with an ETU320 electronic trip unit that adjusts from 945 A to 5670 A — so you dial in the overload protection to match the downstream load, not the other way around.
Panel fit and derating reality
At 184 mm wide, 248 mm tall, and 110 mm deep, this breaker takes a standard MCCB footprint. At 50 °C it derates to 593 A, at 60 °C to 557 A, and at 70 °C to 520 A — if your panel runs hot inside, the actual continuous current you can pull is lower than the nameplate says. Maximum power loss is 162 W — that heat has to leave the enclosure, so factor it into the panel thermal budget, especially in a sealed cabinet.
Trip unit and protection features
Neutral protection is adjustable: OFF, 50%, or 100% of the phase current, set via a dial on the trip unit.