For UL 1077 / CSA C22.2 No. 235 applications (supplemental protection), it's rated 5 kA — keep that in mind if the panel requires branch-circuit rated devices.
Terminals accept 0.75 to 35 mm² solid or stranded copper, with a listed tightening torque of 2.5 to 3.5 N·m. That 35 mm² top end is unusual for a 40 A breaker — it makes terminating larger supply feeders straightforward. Combined terminal at top and bottom; sealable cover is available for lockout/tagout.
Halogen-free and silicon-free construction, which matters for clean-room or sensitive electronics environments. Overvoltage category III, energy limiting class 3. Touch protection is built in. The part is classified per DIN EN 61346-2 and DIN EN 81346-2 function code F.