The Siemens SENTRON 3VA2163-6HL36-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across its full operating temperature range from -25 °C to 70 °C. The interrupting ratings are substantial: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That kind of high-fault capacity means this breaker can sit close to the transformer or service entrance without worrying about cascading failure upstream.
That's unusual; most MCCBs start shedding current above 40 °C. If your panel runs hot, this breaker doesn't force a larger frame size. The adjustable thermal-magnetic trip (the 95 A minimum to 756 A maximum range on the magnetic pickup) lets you fine-tune the short-circuit protection to the load without swapping the breaker body.
The 3VA2163-6HL36-0DA0 measures 105 mm wide, 181 mm high, and 86 mm deep — that's a 4.13 x 7.13 x 3.39 inch footprint. The 3-pole design fits standard 3-phase distribution panels; the UVR adds a small coil draw but no extra width.