The Schneider Electric A9N26581 is a Vigi xC60 add-on residual current device (RCD) from the Acti9 range, designed as a 2-pole (2P) unit rated at 25 A with a 30 mA earth-leakage sensitivity, Type AC, instantaneous trip.
Rated 25 A continuous at 230...240 V AC, 50/60 Hz, per EN/IEC 61009-1 and 61009-2-1. The 30 mA sensitivity is the standard threshold for personal protection against indirect contact in residential and light commercial circuits. The instantaneous trip time (no intentional delay) clears earth faults within the standard response window, typical for socket-outlet and lighting final circuits. Rated insulation voltage (Ui) is 500 V AC, impulse withstand (Uimp) is 6 kV, and pollution degree 3 means it tolerates conductive pollution in a typical panel environment. The electromechanical, voltage-independent tripping mechanism operates without needing an external power supply — it draws its trip energy from the fault current itself, which is a reliability advantage in installations where auxiliary voltage might be lost. Physical dimensions: 63 mm wide (3 x 9 mm pitches), 87 mm tall, 74.5 mm deep. The 74.5 mm depth is a standard figure for this class of add-on block — verify it clears the enclosure door or gland plate clearance before committing the BOM line.
Clip-on mounting to DIN rail; the 63 mm width occupies three 9 mm pitch modules. Strip length is 14 mm for the bottom connection. The red indicator on the front face shows tripped status — useful for fault isolation during commissioning or troubleshooting.