It's the part that protects a single outgoing circuit against both overload/short-circuit and earth leakage, all in one 18 mm wide DIN-rail module.
Key ratings — what they mean for the panel
Rated at 10 A at 50 °C. That 50 °C ambient derating is worth noting: if your enclosure runs hotter, the continuous current capacity drops. The integrated earth-leakage protection means you don't need a separate RCCB upstream for this circuit, saving a DIN module. Breaking capacity is 6000 A Icn at 230/240 V AC 50/60 Hz. Limitation class 3 means it lets through limited energy during a short-circuit, which helps with downstream coordination.
Mounting and wiring — what fits
Clip-on to DIN rail. At 18 mm wide and 77.5 mm deep, it's the standard single-module footprint — no surprises in a crowded enclosure. The neutral is on the left; wire it consistently and the panel stays clean. Terminals: top accepts 1...25 mm² rigid or 1...16 mm² flexible; bottom accepts 1...16 mm² rigid or 1...10 mm² flexible. Strip 13 mm for bottom connections, 14 mm for top. Screw-clamp terminals — torque them properly and the connection holds. Keep it inside the enclosure, not in a washdown zone.