What this MCCB brings to a panel
The Siemens SENTRON 3VA2063-5HN36-0KH0 is a 3-pole molded case circuit breaker rated at 63 A continuous, sized for line protection in distribution panels. Its 187 kA interrupting capacity at 240 V AC means it can clear a fault at that level without the arc flashing upstream — critical for high-fault-current service entrances or transformer secondaries. At 415 V it still holds 121 kA, and at 500 V it delivers 75.6 kA, so it handles industrial feeders where the available fault current is substantial. The 3 kA at 690 V is a derated tail, not the main event; this breaker is built for the 240–500 V range. The 63 A rating holds flat across the full 40 °C to 70 °C ambient range — no derating curve to chase in a warm enclosure. That's a solid advantage when the panel sits near a furnace line or in a non-conditioned electrical room.
Auxiliaries and release config
Factory-fitted with 2 auxiliary switches plus 1 trip alarm switch (HQ designation) and a shunt trip release (STL). That gives you remote status and remote trip capability without field-wiring additional modules — one less thing to order and mount. The shunt trip is wired separately from the power circuit, so a safety PLC or E-stop chain can open the breaker independent of the overload condition. No undervoltage release fitted on this variant, and no ground-fault monitoring. If UVR or GF protection is required on the feeder, this isn't the order code for that — you'd look at a different suffix in the 3VA2 family.
Physical fit in the enclosure
Footprint is 105 mm wide by 181 mm tall by 86 mm deep — a standard 3-pole MCCB envelope that drops into most SENTRON panelboards and DIN-rail adapter plates. The 86 mm depth means it clears shallow backboxes without the cover bulging. Power loss at rated current is 5.4 W maximum.