It carries a rated current of 1350 A and a maximum of 1500 A at 400/480 V AC, 50/60 Hz — that is the continuous current the choke can handle without saturating or overheating, sized for the drive's nominal input, not its peak. The 0.018 mH inductance (18 µH) and 4% relative inductive voltage drop mean it limits harmonic distortion and reduces di/dt stress on the drive's rectifier; the 4% drop is a standard value for input chokes in industrial drives, balancing line impedance against voltage sag. The 660 W coil loss plus 260 W iron-core loss (920 W total at rated load) must be dissipated — the IP00 enclosure means it is open-frame and relies on the panel's forced-air or natural convection; mount it with clearance per the manufacturer's thermal guidelines.
Thermal class and ambient conditions
Rated for a 40 °C ambient with thermal class H per IEC 60085 — that means the insulation system can withstand a 180 °C hot-spot temperature, giving headroom for overloads or higher ambient if derated. The 920 W total power loss is the heat that must be removed from the panel; factor it into your enclosure cooling calculation.