S10 frame power contactor for motor and resistive loads
The 3RT1066-2AR36: The S10 frame is the largest in the SIRIUS contactor family, sized for high-current main circuits up to 240 mm² stranded cable per pole.
Panel fit and mounting flexibility
The dimensions are 210 mm height, 145 mm width, and 202 mm depth. Main circuit wiring accepts stranded cable from 70 mm² up to 240 mm² per pole — this covers the full range from moderate to very high current motor feeders in a single contactor frame.
Switching frequency and duty cycle limits
For AC-3e (enhanced AC-3 for variable-speed drive input switching) the limit is also 500 ops/hour. Arcing time is 10-15 ms, and the operating delay (both AC and DC) is 40-80 ms — these timing parameters matter when coordinating the contactor with upstream short-circuit protection devices or when sequencing multiple contactors in a star-delta starter.