63 A MCCB with 187 kA interrupting capacity
The Siemens 3VA2163-5HL36-0HC0 is a 3-pole SENTRON molded case circuit breaker rated for 63 A continuous current at 40 °C ambient, with a breaking capacity of 187 kA at 240 V AC. That interrupting rating drops to 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V — so the voltage class you're protecting determines which fault level this breaker can clear.
Above that it derates: 60.6375 A at 55 °C, 58.275 A at 60 °C, 55.9125 A at 65 °C, and 53.55 A at 70 °C. The 4 W maximum power loss matters for enclosure heat budgeting in a sealed panel.
Line protection configuration
The shunt trip (STL) allows a remote signal to trip the breaker, useful for emergency-stop circuits or supervisory shutdown. Two HQ auxiliary switches provide normally-open/normally-closed contacts for panel indication or PLC inputs.