That 1000 A rating holds from 40 °C up to 55 °C ambient, then derates to 955 A at 60 °C, 885 A at 65 °C, and 815 A at 70 °C — so in a warm panel you still have headroom down to 815 A before the trip curve shifts. Breaking capacity runs 187 kA at 240 V, 121 kA at 415 V, and 53 kA at 690 V — that's serious fault-interruption muscle for a 1000 A frame, meaning it can sit on a high-capacity transformer secondary or a large motor control center without needing upstream current-limiting fuses.
Trip unit and adjustability
The ETU860 electronic trip unit gives you adjustable long-time pickup (Ir) from 0.5 s to 25 s, and short-time delay (tsd) from 0.05 s to 0.5 s — that lets you coordinate selectivity downstream without sacrificing arc-flash compliance.
The 3VA2510-5KQ32-0AC0 measures 320 mm tall, 210 mm wide, and 120 mm deep — that's a 12.6 x 8.3 x 4.7 inch footprint, so it needs a decent cutout in the panel but fits a standard MCC bucket depth.