Mitsubishi FFR-HEL-H37K-E1 DC Reactor for FREQROL Inverters

The Mitsubishi FFR-HEL-H37K-E1 is a power factor improving DC reactor designed for use with Mitsubishi FREQROL series variable frequency drives. Engineered for 400 V class industrial inverter systems with an operating rating of 37 kW, this DC link choke connects directly into the drive direct-current intermediate circuit between terminals P1 and P+. Its primary function is to suppress harmonic currents generated by the rectifier section, attenuate line distortion, and significantly improve the overall system power factor. In addition to reducing power supply harmonics in compliance with industrial guidelines, the unit minimizes peak inrush currents and helps protect upstream distribution equipment from excessive electrical stress. The FFR-HEL-H37K-E1 is compatible with FREQROL high-performance and general-purpose inverter lines, including FR-A840, FR-F840, FR-A740, and FR-F740 drive installations. Built for demanding automation environments, it provides reliable thermal dissipation and continuous operation across industrial applications such as pump stations, fans, compressors, extruders, and material handling systems where clean power distribution and drive longevity are essential.