It carries a 480 V rated value of 40 A, which tells you the continuous current it can handle at that voltage level — useful for sizing against a motor nameplate or resistive load bank.
That 55 mm width and 114 mm height, 130 mm depth footprint fits standard panel layouts — just watch the side clearance if you're packing multiple contactors side-by-side.
Switching performance and thermal limits
Rated for 1 200 operations per hour at AC-1 (resistive), 1 000 at AC-3 (motor start/run), and 300 at AC-4 (plugging/inching). The arcing time runs 10 to 20 ms, and the closing time at AC is 10 to 18 ms. The mechanical life of the contactor typical is 10 000 000 operations — that's the mechanical endurance, not the electrical life under load, which depends on your switching duty and current.