The Siemens SENTRON 3VA2163-5JP32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, and it holds that same 63 A rating all the way up to 70 °C — no derating needed in a warm panel, which is a real advantage out here in the grease where cabinets sit next to hot machinery. Its interrupting ratings are what decide whether it clears a fault without welding its contacts shut: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V.
Built-in extras that matter on the route
The communication function means it can talk to a PLC or BMS for remote trip indication and load monitoring — useful when you're walking an eight-mile lube route and want to see a trip event from the control room instead of walking to every panel.