The Schneider Electric A9SCO225 is an Acti9 iSSW changeover switch — a 2-pole, 25 A device rated for 400/415 VAC networks at 50/60 Hz. It switches the source of supply between two incoming lines, with a toggle control (3 positions, white) and a clear contact position indicator. The utilisation categories are AC-22A (resistive/mixed loads) and AC-23A (motor loads with occasional switching), so it handles both general distribution and moderate motor duty.
Rated operational current is 25 A (Ie) at 400/415 VAC. That is the continuous current the switch carries under normal load — not a peak or inrush figure. For motor loads (AC-23A), the rated power is 4 kW at 240 V and 3.7 kW at 230 V; for resistive/mixed loads (AC-22A), it is 4.8 kW at 240 V and 4.6 kW at 230 V. The rated short-time withstand current (Icw) is 0.5 kA for 1 second at 400/415 V, and the peak making capacity (Icm) is 0.5 kA — these define the fault-handling capability upstream of the load. Insulation voltage (Ui) is 690 V, impulse withstand (Uimp) is 6 kV, and pollution degree 3 is specified — meaning the switch is designed for industrial environments where conductive pollution may occur. It is suitable for isolation (positive break indication), and the contacts are 2 C/O (changeover).
The 2-pole body occupies 4 modules of 9 mm pitch (36 mm total width). Tightening torque is 2.5 N·m. Wire stripping length is 12 mm. IP20 rated (IP40 inside an enclosure).