No ground fault detection here — that's a separate device if your installation requires it.
Breaking capacity and where it fits
Short-circuit breaking capacity is 100 kA at 240 V AC, 50 kA at 400 V AC, 8 kA at 500 V AC, and 5 kA at 690 V AC (–). At 400 V — the most common industrial supply in Europe and much of Asia — that 50 kA SCCR gives you headroom for high-fault panels without cascading upstream. Any mounting position works, which helps when you're shoehorning it into a tight enclosure. Front protection is IP20 — finger-safe when the panel door is open, but not washdown-rated.
Main circuit terminals are screw-type with box terminals. Solid conductors: 2x (2.5 to 16 mm²). Stranded: 2x (10 to 50 mm²) or 1x (10 to 70 mm²). Finely stranded with ferrules: 2x (2.5 to 35 mm²) or single 2.5 to 50 mm². That's enough cross-section for the full 90 A without derating the terminals. Auxiliary and control circuit terminals are also screw-type. The auxiliary switch slot is populated — product extension auxiliary switch is marked Yes, so you get a signal contact for PLC feedback or status lamp without adding an external block.