What this MCCB carries and where it fits
The Siemens SENTRON 3VA2063-5HN32-0KG0 is a 3-pole molded case circuit breaker (MCCB) rated 63 A continuous current with a line-protection design — meaning it sits at the feeder or main distribution point in a panel, not on a motor circuit. Its interrupting capacity hits 187 kA at 240 V AC, 121 kA at 415 V, and 75.6 kA at 500 V, so it handles high-fault utility feeds without cascading upstream. The 86 mm depth and 105 mm width fit standard panel layouts; the 181 mm height leaves room for busbar connections above and below. This breaker holds its full 63 A rating across the entire operating temperature range from -25 °C to 70 °C — no derating curve to chase. That flat thermal performance simplifies panel design when the breaker shares an enclosure with heat-generating gear like drives or transformers.
Integrated accessories and wiring
Factory-fitted with a shunt trip (STL) auxiliary release and a combined 1 auxiliary switch + 1 trip alarm switch. The shunt trip lets a remote safety relay or PLC drop the breaker under fault or E-stop conditions without a manual action. The trip alarm switch signals the open state back to the control system — useful for a remote annunciator or a safety circuit that needs to confirm the breaker is open before allowing a restart. Power loss is 5.4 W maximum, low enough that ventilation slots in a standard enclosure handle the heat without forced air. The breaker includes a voltage trigger and a trip indicator — the indicator gives a local visual confirmation of a trip event, which speeds fault isolation on a multi-breaker panel.