It protects a 230/240 V AC circuit against both overload/short-circuit (via the Type C magnetic trip) and earth leakage (30 mA residual current).
Rated 10 A at 30 °C ambient, but the thermal derating is significant: 8.9 A at 40 °C, 8.6 A at 45 °C, 8.1 A at 50 °C, and 7.7 A at 55 °C. The Type C characteristic (5–10x In magnetic release) suits motor, lighting, and transformer inrush without nuisance tripping. The 30 mA residual sensitivity covers personnel protection (indirect contact) and fire prevention; it's the standard threshold for socket-outlet circuits in most IEC-based codes.
Snaps onto DIN rail in any mounting position. 4 module-widths wide (72 mm), 77 mm deep, 90 mm tall, with an installation depth of 70 mm. Halogen-free and silicon-free construction, which matters for environments with sensitive electronics or strict fire-safety requirements (e.g., rail, marine, or data-center auxiliary boards).