SIRIUS S10 power contactor — 110-127 VAC coil, screw terminals
It carries a rated control supply voltage of 110-127 VAC on the magnet coil, which terminates at screw-type terminals for field wiring. The contactor mounts via screw fixing with a single 11 mm hole, and the enclosure dimensions are 210 mm height, 145 mm width, and 202 mm depth — a compact footprint for the S10 current class.
Duty-cycle switching frequencies and auxiliary contact ratings
Maximum switching frequency varies by duty category: AC-1 (resistive) at 800 operations/hour, AC-2 (slip-ring motor) at 250 ops/h, AC-3 (squirrel-cage motor starting) at 500 ops/h, AC-3e at 500 ops/h, and AC-4 (plugging/inching) at 130 ops/h. These limits govern thermal rise in the contactor; exceeding them in a high-duty application like a frequent-reversing conveyor will require derating or a larger frame. The auxiliary switch is rated at 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V — sufficient for signaling to a PLC input or holding in a control relay.
Wiring and clearance specifications
The main power circuit accepts stranded conductors from 70 to 240 mm², sized for the S10 current range. The coil and auxiliary terminals accept solid or stranded wire: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or max 2x 0.75-4 mm². The pickup voltage threshold is 0.8 of rated value, and the dropout (full-scale value) is 1.1 — meaning the coil will pick up at 88-102 VAC and drop out above 140 VAC, providing a clean on/off characteristic without chatter near the undervoltage region.