The adjustable trip range runs from 300 A minimum to 1500 A maximum, so you're setting the overload and short-circuit thresholds to match the motor full-load amps, not the bus. Short-circuit breaking capacity is where this thing earns its keep: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That's a lot of fault current headroom for a 100 A frame — useful when you're coordinating downstream of a large transformer or a high-capacity bus.
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard 3-pole MCCB footprint for the SENTRON 3VA platform. It's a panel-mount device, not DIN-rail, so plan for a mounting plate cutout and bus bar connections. The trip indicator on the front gives a quick visual on whether it's tripped on fault or manually opened.