What this MCCB carries and where it fits
The Siemens 3VA2163-6HN36-0DC0 is a SENTRON molded case circuit breaker rated for 63 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. Its 242 kA interrupting capacity at 240 V and 187 kA at 415 V means it can sit upstream of a high-fault transformer or busway without worrying about cascading failure. The 3-pole design with undervoltage release (UVR) suits it for line protection in a main distribution panel where you want the breaker to trip if control power drops.
Panel fit and auxiliary wiring
The 105 mm width and 86 mm depth fit a standard 3-pole MCCB footprint on a DIN rail or panel-mount base. It ships with two HQ auxiliary switches built in — that's two sets of contacts for status feedback to a PLC or alarm annunciator without adding a side-mount block. The undervoltage release is factory-installed, so verify your control voltage matches the release coil rating before wiring.
What the interrupting ratings mean for selectivity
At 690 V the interrupting rating drops to 3.7 kA — that's still enough for most 690 V motor circuits, but if you're feeding a high-fault 690 V bus, check the available fault current. The 242 kA at 240 V and 187 kA at 415 V give you headroom for selective coordination downstream; you can size feeder breakers with lower interrupting ratings and rely on this one to clear a bolted fault without blowing the main.