It protects a single-phase AC circuit against both overload/short-circuit (C-curve, 10 A at 30 °C) and earth leakage (AC type fault current, instantaneous trip). Rated at 230/240 V AC, 50 Hz, the unit occupies 2 width units on a DIN rail (36 mm wide, 77 mm deep, 90 mm tall).
The 10 A rating holds at 30 °C ambient; derate to 9.5 A at 40 °C, 9 A at 50 °C, and 8 A at 70 °C. For a panel running at 40 °C, the effective continuous current is 9.5 A — factor that into load planning. Halogen-free and silicon-free construction suits installations with sensitive equipment or low-smoke cabling requirements.