The Siemens SENTRON 3VA2463-6JP32-0CH0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with an ETU550 electronic trip unit and an undervoltage release. It is a line protection version — meaning it protects cables and busbars from overload and short circuit, not motor protection with phase-loss detection. The 164.5 W maximum power loss matters for enclosure thermal design — a sealed panel with this breaker needs ventilation or derating above 40 °C.
Temperature derating — the real-world current
The 630 A rating holds only at 40 °C ambient inside the enclosure. At 50 °C it drops to 570 A; at 60 °C to 510 A; at 70 °C to 450 A.
Auxiliary contacts and communication
The integrated auxiliary trip is order code 3VA9608-0BB24; the basic switch without auxiliaries is 3VA2463-6JP32-0AA0. If your panel design calls for a different auxiliary configuration, the base breaker and the aux kit are ordered separately.
Dimensions: 138 mm wide, 248 mm high, 110 mm deep. It is a 3-pole frame, so it occupies a single 138 mm-wide slot in a switchboard or panel.