AC-1 (resistive) and AC-3e (enhanced motor) are also listed, but the AC-3 figure is the selection anchor. Mounts on DIN rail or plate, so it fits either a standard panel or a backplate layout. The IP2X finger protection means it's safe for open-panel mounting where accidental touch is a concern, but it's not sealed — keep it inside an enclosure rated for the environment. Operates from -5 °C to 55 °C ambient, stores from -60 °C to 80 °C, and runs at altitudes up to 3000 m without derating. That covers most indoor industrial sites; if you're above 3000 m, you'll need to derate the thermal current. Vibration resistance at 3 Gn closed and shock at 10 Gn closed keeps it on the rail in high-vibration machinery like compressors or crushers.
Also passes the glow-wire test at 850 °C per IEC 60695-2-1 and the appliance standard EN/IEC 60335-1 Clause 30.2 for fire resistance. That's the paperwork you need for a CE declaration or a UL-recognized subpanel — the contactor carries the marks for industrial control panels and appliance-level safety.