It protects downstream wiring and loads against overloads and short-circuits, and meets IS/IEC 60947-2 for distribution applications. Breaking capacity is 10 kA at 380–415 V AC 50/60 Hz and 15 kA at 100–125 V DC, both per IS/IEC 60947-2. The C-curve magnetic trip is set at 8 x In ±20 %, so it holds through moderate inrush (typical of small motors or lighting ballasts) but trips fast on hard shorts. Rated current is 2 A, so it's sized for a 2 A branch circuit — not for motor feeders or high-load panels. Clip-on mounting to a 35 mm DIN rail, 54 mm wide (6 x 9 mm pitches), 85 mm tall, 77.5 mm deep. IP20 finger-safe terminals. Pollution degree 3, overvoltage category IV — rated for main panel installation, not just sub-distribution.
Wire strip length is 13 mm. Tightening torque 2 N.m. Earth-leakage protection requires a separate block — not built-in.