What this MCCB delivers
The Siemens SENTRON 3VA2463-5JP32-0HL0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with an adjustable overload trip range from 945 A minimum to 5 670 A maximum — meaning you can tune the protection band to the actual load without swapping the breaker frame. At 240 V it interrupts 187 kA, at 415 V it holds 121 kA, and at 690 V it still clears 9 kA. That kind of interrupting capacity tells you this frame is built for high-fault panels where a standard MCCB would arc over. It carries a communication function (likely for remote trip indication or load monitoring via the SENTRON bus) and includes a shunt trip release (STL) plus a configurable auxiliary switch block: 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch HQ. The trip indicator and voltage trigger are present; there is no undervoltage release and no ground-fault monitoring on this variant.
Thermal derating and panel fit
The 630 A rating is only valid at 40 °C ambient. As the cabinet heats up — and it will, with a 162 W power loss at full load — the breaker derates linearly: 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. If your panel ambient runs 50 °C, you are effectively working with a 570 A breaker, not 630 A. Plan your load budget accordingly. Dimensions are 248 mm high, 138 mm wide, 110 mm deep — a standard SENTRON 3VA3 frame footprint that drops into the same mounting cutout as the 3VA2 family. The basic switch module is order code 3VA2463-5JP32-0AA0, so the -0HL0 suffix adds the communication and auxiliary switch package.