The Schneider Electric A9S60240 is an Acti9 iSW switch disconnector — a 2-pole device rated 40 A at 415 V AC (AC-22A utilisation category per IEC 60947-3) designed for control isolation duty in a distribution panel. AC-22A covers mixed resistive and inductive loads, so this is the right utilisation category for switching motor circuits, lighting, and small transformer primaries where you need a visible break for lockout/tagout.
Rated operational current (Ie) 40 A at 415 V AC — this is the continuous current the switch can carry under normal load, not the breaking capacity. For motor isolation, match it to the full-load current of the load, not the breaker rating upstream. Rated insulation voltage (Ui) 500 V AC and impulse withstand (Uimp) 6 kV — the switch is insulated for 500 V systems and can survive 6 kV surges typical of industrial mains. Electrical durability 20,000 cycles, mechanical 50,000 cycles — the switch is rated for frequent operation, but if your application cycles the disconnect daily, the electrical life figure governs. Derate for switching under load. This covers common panel wire sizes up to 2 AWG. Standard comb busbar compatibility means it integrates with the Acti9 busbar system for distribution.