The Siemens 3VA2563-5MN32-0CA0 is a 3-pole molded-case circuit breaker on the 3VA2 IEC frame 1000, rated In=630A with a breaking capacity Icu=55kA at 415V — class M, meaning it handles the high fault currents common in industrial distribution without needing a fused upstream backup. The ETU350M trip unit gives you LSI protection (long-time, short-time, instantaneous) adjustable for motor starting curves: overload Ir from 250A to 630A, short-circuit pickup Isd from 3 to 15 x Ir, and instantaneous fixed at 15 x In. That range covers most medium-voltage motor feeders and large transformer primaries. That UVR is a common spec on safety circuits and emergency-stop chains where loss of control power should open the main.
The adjustable Ir lets you dial in exactly the motor full-load amps, so you don't oversize protection and lose coordination downstream. The UVR coil draws from a 120-127V AC control supply; if your panel uses 110V or 230V control, you'll need a different undervoltage release module or an interposing relay. Standard DIN-rail mounting in the 3VA2 frame — fits the same footprint as other 3VA2 breakers up to 630A.