Rated for the line — what the interrupting numbers mean
The interrupting rating climbs to 187 kA at 240 V and drops to 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — so the available fault current at your service voltage is what governs fit, not the headline number.
Thermal derating — don't ignore the ambient curve
Above that, it derates: 30.72 A at 55 °C, 30.08 A at 60 °C, 29.44 A at 65 °C, and 28.8 A at 70 °C. If your panel sits near a furnace or drive cabinet that pushes internal air past 50 °C, size the load side accordingly — the breaker will trip earlier than a cold-bench test suggests.
Dimensions: 130 mm height, 76.2 mm width (3-pole base), 70 mm depth. The shunt trip release (order code 3VA9688-0BL33) is integrated; no external wiring needed for the trip coil.