What this MCCB carries and where it fits
The Siemens 3VA2163-5HL36-0KH0 is a SENTRON molded case circuit breaker sized for 63 A continuous duty in a 3-pole line-protection configuration. It carries an ETU320 electronic trip unit and an integrated shunt trip (STL) for remote opening. The 187 kA interrupting rating at 240 V makes it a high-fault-current choice for main or feeder breakers in industrial panels where the available fault current is substantial. Rated insulation voltage is 800 V, and the breaker holds its 63 A rating from 40 °C up through 50 °C without derating; at 55 °C it steps down to 60.6 A and continues a linear derating curve to 53.6 A at 70 °C. That means in a warm panel you still get the full 63 A up to 50 °C — no headroom lost until the ambient climbs above that.
Breaking capacity across voltage levels
This breaker's interrupting performance drops as system voltage rises: 187 kA at 240 V, 121 kA at both 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. For a 480 V panel the relevant figure is the 79 kA at 500 V — that gives you headroom for most industrial service entrances without needing a current-limiting fuse upstream.
Panel fit and auxiliary wiring
Dimensions are 105 mm wide by 181 mm tall by 86 mm deep — that 86 mm depth is the body, not counting handle throw or rear terminals. It mounts on a DIN rail or directly to a backplate via the screw-down lugs. The auxiliary contact block is factory-fitted as 2 auxiliary switches plus 1 trip alarm switch (HQ configuration), so you have three dry contacts for status feedback without adding a separate module. The shunt trip (STL) is built in, not a field-add-on — part number 3VA9688-0BL33 for the integrated auxiliary trip. No undervoltage release, no ground-fault monitoring, no communication module on this variant. It's a straight line-protection MCCB with remote trip capability and basic alarm contacts.