Ground fault detection is not included, so if that's a requirement, you'll need an external ground-fault relay or a different breaker variant.
The interrupting ratings are the headline: 100 kA at 240 V, 400 V, and 500 V, and 10 kA at 690 V. Fuse backup ratings are specified: gL/gG 25 A at 400 V, 32 A at 500 V, and 25 A at 690 V. If you're coordinating with upstream fuses, those are the maximum sizes the breaker is tested with. Main circuit connections are screw-type terminals accepting 2x (0.75 to 2.5 mm²) solid or stranded, or 2x 4 mm² — standard for panel wiring with ferrule or direct termination.
Clearance requirements: 50 mm upwards and downwards, 30 mm at the sides, and 0 mm forwards and backwards. That 0 mm backwards means it can sit flush against a back panel or enclosure wall — no extra breathing space needed behind the rail.