SIRIUS S0 Power Contactor with 110 V AC Coil
The contactor is rated for a main contact operating current of 18 to 8 A, and provides a mechanical service life of 10,000,000 operating cycles typical.
Switching Frequency and Duty Ratings
Maximum switching frequency depends on the duty category: 1,000 cycles/hour under AC-1 (resistive loads), 750 cycles/hour under AC-2 or AC-3 (slip-ring or squirrel-cage motors), 750 cycles/hour under AC-3e (enhanced motor starting), and 250 cycles/hour under AC-4 (plugging or inching). These limits govern thermal rise in the contactor — exceeding them accelerates contact wear, particularly under AC-4 where the arc energy is highest.
Mounting, Clearances, and Environmental Range
The contactor measures 45 mm wide, 102 mm high, and 154 mm deep. Conductor cross-sections accepted are 1 to 10 mm² solid or stranded, with 2x (0.5 to 2.5 mm²) for parallel wiring.
Auxiliary Contact Ratings and Switching Times
This variant ships without an auxiliary switch block. For auxiliary contact ratings at various voltages: 6 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. The motor horsepower rating at 230 V is 5 hp.