The interrupting rating drops as voltage climbs: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. At 690 V the breaker is still usable but only for relatively low-fault locations — think downstream of a transformer with limited secondary fault current. For most 400 V class industrial panels the 121 kA figure gives plenty of headroom against typical 50-65 kA available fault currents.
Adjustable trip and auxiliary contacts
The breaker has a 20 A minimum trip setting and a 100 A full-scale value.
The 86 mm depth means it stays clear of gland plates and backpanel wiring troughs in a typical 200 mm deep enclosure.
Maximum power loss is 13.5 W at rated current. That's modest — it won't cook adjacent components, but in a densely packed panel with multiple breakers running near 100 A, it's worth checking the total dissipation against the enclosure's thermal rating.