The ABB AF09-40-00-13 is an IEC contactor from the AF-Line series, rated for 9 A and carrying 4 normally-open power poles.
What the 9 A rating means for fit
The 9 A figure is the general-purpose (AC-1) thermal current rating. In motor-switching duty (AC-3), the contactor's rated operational current will be lower — typically around 4–5 A for a 4-pole frame this size. That makes the AF09-40-00-13 a fit for small motor loads (fractional-horsepower pumps, fans, conveyors) or for resistive heating banks where the full 9 A per pole is usable. The 4-pole arrangement with all N.O. contacts suits applications needing three-phase switching plus a neutral or an additional load circuit.