The Mitsubishi FR-HEL-H160K is a 160kW inductor or choke from the FR-HEL series, intended for use in drive systems where line or DC bus filtering is required to manage harmonics and limit current rise.
This is a magnetic component—an inductor or choke—designed for 160 kW power levels, common in Mitsubishi drive installations.
You'll find this in the power path of a variable frequency drive, either as a line reactor on the input side or a DC link choke between the rectifier and inverter stages, smoothing current and reducing electrical noise.