The Schneider Electric A9C22212 is a 2-pole contactor from the Acti9 iCT series, rated for 16 A in AC-7A duty and 6 A in AC-7B duty at 250 V AC, 50 Hz. The 48 V AC 50 Hz control coil is maintained-signal type, so the contactor stays closed as long as the control voltage is present — no pulse latching. This matters for motor, heating, and lighting circuits in small commercial and residential panels where you need a remote-controlled, normally open contactor that drops out on power loss.
The 16 A AC-7A rating covers resistive and lightly inductive loads — think heating elements or incandescent lighting. The 6 A AC-7B rating applies to inductive loads like small motors or fans. The 100,000-cycle electrical endurance at 16 A AC-7A (per IEC/EN 61095) is typical for this class — fine for lighting or HVAC contactor duty, not for high-cycle machine tool applications. Pollution degree 2 means it's intended for a clean, dry environment inside an enclosed panel — not for outdoor or dusty locations without additional enclosure protection.
Clip-on mounting to 35 mm symmetrical DIN rail. Width is 18 mm (2 x 9 mm pitches), so it takes up one standard modular position in a consumer unit or distribution board. Depth is 68.5 mm, height 81 mm — fits most domestic enclosures. Terminals are tunnel type: power circuit accepts 1.5 to 6 mm² rigid or 1 to 4 mm² flexible; control circuit accepts 1.5 to 2.5 mm². Tightening torque is 0.8 N.m for both power and control — use a torque screwdriver, overtightening can crack the tunnel.
Designed to IEC/EN 61095 (household and similar electromechanical contactors) and referenced to EN 60947-4-1 for certain endurance ratings. IP20 finger-safe terminals; IP40 in modular enclosure. Tropicalisation treatment per EN 60947-4-1 and IEC 1095 — suitable for high-humidity environments up to 95% at 55 °C.