It's a 3-pole (3P) unit rated for AC-3 duty up to 16 A at 440 V, with a 42 V AC coil. The utilisation category covers both AC-3 (squirrel-cage motor starting) and AC-4 (plugging/inching), so it handles reversing and jogging applications where the motor sees frequent starts under load.
The AC-3 rating of 16 A at ≤440 V tells you this contactor is sized for motor loads up to roughly 7.5 kW at 400 V — that's a typical small conveyor, pump, or fan reversing application. The 42 V AC coil means it's intended for control circuits running at that voltage, common in older panel designs or where safety extra-low voltage isn't required but a lower control voltage is preferred. The mechanical robustness specs are worth noting if this contactor sees vibration: it's tested to 4 Gn closed and 2 Gn open across 5–300 Hz, with shock ratings up to 15 Gn on Y and Z axes when closed. That's solid for industrial environments but not extreme — think machine tools or conveyors, not crushers or presses.
The preassembled reversing busbar saves panel space and wiring time compared to building a reversing pair from two separate contactors plus an interlock.
Flame retardance meets V1 per UL 94 and also NF F 16-101 and NF F 16-102 (railway fire standards). Protective treatment is TC per IEC 60068 and DIN 50016 (corrosion protection for tropical climates). The IP20 rating is per VDE 0106. Operating altitude is 2000 m without derating.