SENTRON 3VA2463-6JP32-0AG0 — 630 A MCCB with adjustable trip and communication
The Siemens 3VA2463-6JP32-0AG0 is a SENTRON molded case circuit breaker rated for 630 A continuous at 40 °C, with a 3-pole design and an adjustable trip unit covering 945 A to 5670 A. Its breaking capacity reaches 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V — numbers that tell you this breaker is built for high-fault industrial mains, not branch circuits. Rated for line protection, it includes a communication function and ships with one auxiliary switch plus one trip alarm switch. The trip indicator gives a clear visual on the front panel during fault isolation.
Thermal derating and power loss
The 630 A rating holds at 40 °C ambient. Above that, derate stepwise: 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C (–). Maximum power loss is 162 W — plan ventilation or spacing in a sealed enclosure.