The Siemens 4EU3052-7UA00-0AA0 is a 3-phase mains choke for variable frequency drives. Its 280 A AC maximum current and 252 A operational current at rated value indicate continuous capacity under 400/480 V, 50/60 Hz line conditions.
Thermal and environmental constraints
Rated for a 40 °C ambient, thermal class H per IEC 60085 — that insulation system handles a 180 °C hot-spot temperature, giving headroom for the 216 W coil loss and 104 W iron core loss under full load. The IP00 enclosure means no dust or moisture protection; this choke mounts inside a ventilated cabinet, not in a washdown or outdoor location. Dimensions are 0.3 m wide by 0.269 m tall by 0.221 m deep; verify panel floor space and clearance for the magnetic field to adjacent steel.