SIRIUS S10 Power Contactor — 3RT1066-6AF36-3PA0
The Siemens SIRIUS 3RT1066-6AF36-3PA0 is a Size S10 power contactor rated for a 110... 127 V AC 50/60 Hz coil. The coil connection uses screw-type terminals. Mounting is by screw fixing with four 11 mm diameter holes on a 145 mm width and 210 mm height footprint, with a depth of 202 mm.
Duty-Class Switching Frequency and Contact Ratings
Maximum switching frequency varies by duty class: 750 operations per hour at AC-1 (resistive), 500 at AC-3 (normal motor starting), 250 at AC-2 (slip-ring motor), and 130 at AC-4 (plugging/inching). The AC-3e rating also permits 500 operations per hour. The auxiliary switch (1 NO + 1 NC) is rated for 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V.
The coil pick-up voltage factor is 0.8 of rated value (88 V minimum for the 110 V coil), and the full-scale value factor is 1.1 (121 V maximum).
Panel Integration and Sourcing
The S10 frame size and screw-fixing mounting with 11 mm holes suit standard backplate or sub-panel installation. The 202 mm depth must be accommodated in enclosure depth planning, particularly when combined with cable ducts or busbar systems. The main power cable range (70 to 240 mm² stranded) indicates this contactor is sized for higher-current motor circuits, typically above 100 A in AC-3 duty. The auxiliary contact ratings cover 24 V to 110 V control circuits commonly found in PLC and relay logic.