The TM240 designation means the thermal element is fixed at 32 A and the magnetic short-circuit pickup is adjustable — per the release design, the magnetic trip threshold is set at 240 A (7.5× Iu), which is the standard fixed-magnetic value for this release family. The 32 A rating holds flat from 40 °C to 50 °C ambient; above that it derates to 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. The breaking capacity is the headline figure for fault coordination: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. For a site electrical engineer checking selectivity, that 75.6 kA at 415 V gives substantial headroom against a typical 50 kA or 65 kA available fault current on a large industrial service. This is a line-protection version (not motor-protection), so it is intended for feeder and distribution circuits — cable protection, busway taps, panelboard mains.
The breaker occupies a 76.2 mm width (roughly 3 inches — three 1-inch pole spaces on a DIN rail or panel-mount footprint), 130 mm height, and 70 mm depth.