The AC-3 rating of 16 A at 440 V governs motor switching — that is the current the contactor can make and break under full-load motor starting. The 48 V AC coil pull-in voltage must match the control transformer tap; a coil outside ±10 % of nominal may not hold closed under brownout. IP20 finger-safe terminals (VDE 0106) mean it is intended for enclosed panel mounting, not exposed washdown areas. The V1 flame-retardance rating per UL 94 and NF F 16-101 is a material-level safety property for rail and industrial enclosures.
The 90 mm width × 58 mm height × 57 mm depth footprint clips onto standard DIN rail. The preassembled reversing busbar saves one wiring step — incoming line lands on the common terminals, and the two contactor coils are interlocked via the built-in mechanical linkage so both cannot close simultaneously. Operating altitude is 2000 m without derating; above that, the dielectric withstand drops and the contactor must be de-rated per IEC 60947.