The Schneider Electric A9D17325 is an Acti9 iC60 RCBO — a combined residual-current circuit breaker with overcurrent protection, in a 3-pole form rated 25 A with 30 mA earth-leakage sensitivity and a C-curve magnetic trip characteristic (5 to 10 x In). Breaking capacity is 10 kA Icn at 220...240 V AC per EN/IEC 61009-2-1, with an ultimate breaking capacity Icu of 15 kA at the same voltage per EN/IEC 60947-2 — adequate for most commercial and light industrial distribution boards where the upstream fault level is under 10 kA. The thermal-magnetic trip unit covers overload and short-circuit protection; the integrated earth-leakage block detects ground faults down to 30 mA, protecting both the circuit and personnel against indirect contact.
Clip-on mounting to a DIN rail (35 mm per EN 60715) — the 54 mm width occupies 6 pitches of 9 mm spacing, fitting standard distribution enclosures with an IP40 rating in the enclosure and IP20 at the terminals.