It's an instantaneous unit, designed for use with the 5SP4 distribution board series.
The 100 A rating at AC is the headline number, but what matters for a real install is the temperature derating: at 70 °C ambient it's good for 80 A, so if you're packing this into a hot panel with other breakers, you need to watch the load. The insulation voltage (Ui) is 460 V, and it's rated for overvoltage category III with pollution degree 2 — standard for fixed-install distribution boards. It's a 5-module-width unit (124 mm wide) with a depth of 70 mm. Mounts in any position, top or bottom feed. Sealable? No, but that's typical for this class of RCD.