At 30 °C the continuous rating is 20 A; derate to 17.8 A at 70 °C if the panel runs hot. That places it in the standard category for fixed-installation switchgear in building and industrial panels.
Snap-on mounting to DIN rail EN 60715; the 72 mm width occupies 4 modular width units. Depth is 72 mm, installation depth 70 mm — fits standard distribution boards with that clearance. All four poles are protected (4 poles with protection), and the design is instantaneous — no intentional time delay on the residual-current function. The energy limitation class is 1, which means it limits let-through energy in a fault condition to the lowest category per standards, reducing stress on downstream components.