Rated AC-3 at 16 A up to 440 V, it handles the inrush of a reversing motor load (like a conveyor or pump) within that duty class. The 127 V AC coil is a specific control voltage — verify your panel's control transformer matches before committing the BOM line.
AC-3 at 16 A means this contactor is rated for starting and switching off squirrel-cage motors under full load — the 16 A figure governs the motor FLA it can handle, not the resistive heating current. The 57 mm depth and 90 mm width fit a standard DIN-rail footprint, but the preassembled busbar adds a few millimeters of projection — check clearance to the cabinet door or adjacent devices.