The TM210 thermal-magnetic release gives it adjustable short-circuit pickup at 320 A (fixed, not a range), so it clears bolted faults fast while riding through motor inrush on the thermal side. The interrupting ratings tell the real story: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V — meaning it handles high available fault current on 480 V or 600 V class distribution without cascading upstream. Thermal derating is minimal through 55 °C — still 16 A — then drops to 15 A at 60 °C through 70 °C. That means in a warm panel (say 50 °C ambient) you get full ampacity; above 55 °C you lose 1 A.
At 76.2 mm wide (3 in), 130 mm tall, and 70 mm deep, this 3-pole MCCB fits standard SENTRON mounting footprints. An optional motor drive (product extension available) allows remote trip or reset.