Siemens SENTRON 3VA2463-6JP32-0KH0 — 630 A Molded Case Circuit Breaker
The Siemens SENTRON 3VA2463-6JP32-0KH0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, designed for line protection in industrial distribution panels. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V — that's the fault-clearing muscle for high-available-fault-current mains or sub-feeders where a standard MCCB would weld shut. The 630 A frame size and 3-pole configuration mean it fits as a main breaker in a 400 V switchboard or as a feeder breaker feeding a large motor control center. This breaker carries a shunt trip release (STL) for remote tripping and comes with 2 auxiliary switches plus a trip alarm switch HQ — enough status feedback for a PLC or SCADA to know the breaker state without separate monitoring relays. The communication function is built in, so it can talk to a higher-level energy management system or automation controller over the plant network.
What the Ratings Mean for Your Panel
The 630 A continuous rating at 40 °C is the baseline — but the breaker derates as ambient temperature climbs: 600 A at 45 °C, 570 A at 50 °C, down to 450 A at 70 °C. If your panel runs hot (say 55 °C inside the enclosure), you're limited to 540 A continuous. That derating curve is the real selection gate, not the 630 A nameplate number. The interrupting ratings across voltages tell you where this breaker can sit without upstream fusing. At 690 V it drops to 9 kA — that's a warning: on a 690 V system with high fault current, this breaker needs a current-limiting fuse ahead of it or a higher-rated frame. At 500 V it still handles 121 kA, so it's fine for most 480 V industrial services. Physical footprint: 138 mm wide, 248 mm tall, 110 mm deep. That's a standard SENTRON 3VA frame size — it bolts into the same mounting pattern as other 3VA breakers in this current class. The 110 mm depth means it clears most standard enclosure backpanels without a sub-panel extension.
Panel Fit and Integration Notes
Width 138 mm fits a 3-pole MCCB slot. Shunt trip (STL) requires a separate control voltage. The auxiliary switches (2x) and trip alarm switch (HQ) are pre-wired to a terminal block on the breaker face. That saves panel-builder wiring time compared to adding separate aux contact blocks. The communication function uses the SENTRON 3VA communication module interface — verify protocol compatibility (PROFIBUS, PROFINET, or Modbus) with the specific module ordered alongside this breaker.