The Siemens 4EU3022-3AA00-0AA0 is a 3-phase commutating choke for converter applications, rated at 405 A continuous current with a maximum of 450 A at 400 V AC, 50 Hz. Thermal class H (180 °C) insulation means the winding can tolerate sustained overloads that would cook a class B or F choke; the 220 W coil loss and 143 W iron core loss are the heat you have to vent in the enclosure.
Mounting dimensions are 0.3 m wide, 0.269 m tall, and 0.211 m deep; verify the panel floor space against those numbers before cutting the backplate.