The Siemens 4EU2722-0FG00-0AA0 is a three-phase mains choke (line reactor) for variable-frequency drives, rated for a maximum current of 86 A and a continuous rated current of 77.4 A at 575 V AC, 60 Hz. It delivers an inductance of 0.51 mH with a relative inductive voltage drop of 5 % — that 5 % figure is what limits harmonic distortion and smooths the DC bus on the drive input. The 161 W coil loss and 136 W iron-core loss add up to 297 W total heat that has to leave the panel; at IP00 with no enclosure, you mount this in a ventilated cabinet or a dedicated choke bay where that heat can rise out.
Sizing and thermal class
Thermal class H per IEC 60085 means the winding insulation handles a 180 °C hot-spot temperature — that's the margin that keeps this choke alive when the drive is pulling hard and the ambient in the cabinet hits 40 °C (the rated ambient temperature). The 86 A maximum is the thermal limit at that ambient; if your drive cabinet runs hotter, you derate. The 77.4 A rated current is the continuous line-side current you size the feeder and fusing for.
Flat-type terminals on the main circuit — that means bus-bar or crimp-on ring lugs, not screw-clamp wire ends. The footprint is 0.27 m wide by 0.248 m tall by 0.208 m deep; it's a substantial block that bolts into the panel floor or a mounting plate. IP00 means no drip shield, no finger-safe cover — this lives inside a locked cabinet, not out on the plant floor where washdown or dust could reach it.