The fault-current sensing is Type A, so it catches pulsating DC residual currents from rectified loads like switched-mode supplies or variable-speed drives.
The thermal derating curve is published: 37.6 A at 40 °C, 36.4 A at 45 °C, 34.8 A at 50 °C, 32.4 A at 55 °C (the upper operating limit), and 29.2 A at 70 °C. The power dissipation is 15.6 W at rated load, which adds to the enclosure's internal heat rise; factor that into the thermal coordination for the distribution board.
Mounts on DIN rail, any position. The 2 MW width (36 mm) and 77 mm depth plus 70 mm installation depth mean it fits standard SENTRON distribution boards without crowding adjacent ways.