Interrupting ratings and thermal derating
Interrupting capacity drops as voltage rises: 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. Thermal derating is flat from 40 °C to 55 °C (16 A), then steps to 15 A at 60 °C through 70 °C. Ambient temperature inside a crowded panel pushes the actual ampacity down; the 13.1 W maximum power loss adds to the enclosure heat load.
Built-in undervoltage release and auxiliary switches
It also carries two auxiliary switches plus a trip alarm switch (HQ), so you get remote status indication without adding a separate accessory block. The trip indicator on the front gives a local visual flag.
Width at 76.2 mm (3 inches) is a standard 3-pole MCCB footprint; it occupies three 25 mm module spaces on a DIN rail or panel-mount base.