Motor power and current ratings across common voltages
The 3RA2318-8XB30-2AH0: At 480 V the rated current is 14 A; at 600 V it drops to 11 A — the current derates as voltage rises above 480 V, which matters when sizing upstream protection for a 480 V or 600 V panel. For AC-4 duty (plugging, inching) at 400 V the rating is 5.5 kW — expect roughly 25 % less power capability under severe switching conditions compared to AC-3.
Mounting, size, and terminal details
Size S00 frame — the smallest SIRIUS contactor frame, 84 mm high, 90 mm wide, 83 mm deep, fitting compact panel layouts. Main current circuit uses spring-loaded terminals; the magnet coil also uses spring-type terminals — no screw tightening needed, which speeds wiring and reduces torque-verification steps.
Supplied contactors and mechanical life
The assembly ships with two 3RT2018-2AH02 contactors — one for forward, one for reverse — mechanically interlocked to prevent simultaneous closure. Mechanical life is 10,000,000 operating cycles typical — suitable for high-cycle reversing applications like conveyors, hoists, or door drives where frequent direction changes are expected.
Environmental and compliance notes
Operates in ambient temperatures from -25 °C to +60 °C; storage range is -55 °C to +80 °C — covers most indoor industrial environments without derating at the low end. Shock resistance: 11.4 g for 5 ms and 7.3 g for 10 ms on both AC and DC supplies — rated for installations near vibrating machinery or on mobile equipment.