It carries a 110-127 V AC coil with screw-type terminals, and the main power path accepts stranded cable from 70 up to 240 mm² — sized for the higher-current end of the S10 range. Rated for AC-3 duty (motor switching) at up to 500 operating cycles per hour, and AC-4 (plugging/reversing) at 130 cycles per hour. The 10-15 ms arcing time is typical for a contactor this size; the 40-80 ms operate time on both AC and DC means it coordinates cleanly with upstream short-circuit protection without nuisance tripping. Clearance requirements are tight: 10 mm upward, downward, and to the sides, 20 mm forward — workable in most standard enclosures.
The built-in auxiliary switch is rated 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V. That covers typical PLC input and relay coil loads without needing a separate auxiliary contact block for basic applications.
If you are comparing it against the 3RT1264-6AP36-0KA1, note that the 3RT1264 variant uses a different coil voltage and includes an electronic coil interface; the 3RT1064-6AF36 is the straightforward electromechanical version with a conventional AC coil.