630 A MCCB with 330 kA interrupting capacity — the main feeder breaker for high-fault panels
The Siemens SENTRON 3VA2463-7HL32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for 630 A continuous current, with a breaking capacity of 330 kA at 240 V AC — that's the headline number that decides whether this breaker clears a high-fault bus without upstream coordination issues. At 415 V and 440 V it still interrupts 242 kA, and at 690 V it holds 52.5 kA, so it's sized for main or tie-breaker duty in industrial switchboards where the available fault current is substantial.
Current derating and thermal management in the panel
The maximum power loss is 162 W, which drives ventilation requirements in a sealed cabinet: at full load that heat has to be moved out, either by natural convection through a properly sized gland plate or by forced air. The 110 mm depth means it clears shallow backpanels, but verify the door clearance for the rotary handle if one is fitted.