The Siemens 3VA2163-7HN32-0AB0 is a 3-pole SENTRON molded case circuit breaker rated for line protection, with a continuous current Iu of 63 A at 40 °C, 45 °C, and 50 °C — meaning it holds full 63 A without derating through 50 °C ambient. The interrupting ratings are high: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 5.25 kA at 690 V. That 330 kA at 240 V covers most low-voltage fault scenarios in industrial distribution, so it can be placed upstream without worrying about cascading failure. The front face is IP40, so it's fine in a dry panel but not washdown-rated.
That 105 mm width is the standard 3-pole MCCB footprint for the SENTRON 3VA2 frame — it drops into the same panel cutout and bus-bar spacing as other 3VA2 3-pole units. The 86 mm depth means it clears most standard enclosure depths, but check your back-panel clearance if you're retrofitting into a shallow box.