The Schneider Electric A9V14325 is an Acti9 Vigi iC60 add-on residual current device (RCD) — a 3-pole, 25 A, 300 mA Type AC block that clips onto the outgoer side of a compatible iC60 MCB. It's voltage-independent, so it trips on residual current even if the line voltage drops, and it's rated for 400 V AC networks at 50/60 Hz. The 300 mA sensitivity makes it suitable for general protection against earth faults where a higher threshold is acceptable, such as on distribution sub-mains or circuits with high leakage from connected equipment.
Mounts via clip-on to DIN rail, occupying 6 x 9 mm pitches (54 mm width). The bottom tunnel terminals accept 1 to 25 mm² rigid or 1 to 16 mm² flexible cable, with a stripping length of 14 mm and a tightening torque of 2 N.m. Electrical connection to the upstream MCB is made by screws.
Pollution degree 3 per IEC 60947-2 covers industrial environments with conductive or dry non-conductive pollution. The device complies with EN 61009-1 and IEC 61009-1.