It is the line-protection version — meaning it is configured for cable and feeder protection in distribution panels, not motor or generator protection. Breaking capacity is voltage-dependent: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V. That covers most industrial distribution voltages up to 690 V, with the highest fault-interrupting capability at the lower voltages typical of North American 240/480 V panels.
Temperature derating — what the 32 A rating actually means in a warm panel
Above that, the TM210 release begins to thermally derate: 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.
That 76.2 mm width is a standard 3-pole MCCB footprint — it occupies three 25.4 mm (1-inch) module positions on a DIN rail or panel-mount base. Mount it inside a panel with a door; it is not rated for open-wall washdown environments.