It's built for line protection — the primary job is protecting cables and busbars from overloads and short circuits in a distribution panel.
Breaking capacity — what those numbers mean
This breaker carries a 330 kA interrupting rating at 240 V AC, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V. For a 25 A frame, 330 kA is high-end — it's meant for installations with very high available fault current, like large transformer secondaries or industrial switchgear. The steep drop at 690 V (3 kA) tells you this is really a 480 V class breaker being pushed; don't spec it for 690 V primary protection unless the fault study says you're under 3 kA.
That's unusual for an MCCB; most start dropping current above 40 °C.
The 86 mm depth includes the arc chute and terminals — make sure your enclosure has clearance for the line and load lugs plus bending radius on the cables.