SIRIUS Size S00 power contactor — 24 VAC coil, screw terminals
The 24 VAC coil (rated at 50/60 Hz) pulls in across 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz, so it holds in through typical line sags without drop-out. Screw-type terminals on the main circuit accept up to 2x 4 mm² stranded or 1x 12 AWG, matching the wiring common on 4 kW (690 V) or 3.5 kW (500 V) motor circuits.
Motor duty and coordination — AC-2, AC-4, and short-circuit ratings
For short-circuit coordination, Type 2 (no damage to the contactor or starter) requires a 20 A gL/gG fuse; Type 1 (contactor may need replacement) allows a 35 A fuse. That 20 A limit tells you the panel designer should size the upstream protection for selectivity with downstream motor loads, not just the contactor's thermal rating.
Auxiliary contact ratings and wiring
The contactor carries a built-in auxiliary contact block rated for 10 A at 24 V (AC-12 resistive), 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC. The auxiliary wiring accepts the same screw-terminal range as the main circuit: 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², or max 2x 0.75 to 4 mm² solid/stranded.