Mitsubishi FR-HEL-H250K DC Reactor for FREQROL Drives

The Mitsubishi FR-HEL-H250K (FR-HEL-H250K) is a DC reactor engineered for use with Mitsubishi FREQROL series variable frequency drives. Operating as an essential power quality and drive protection component, the unit connects to the direct-current intermediate link of compatible FREQROL inverters. Its primary function is to suppress harmonic currents generated on the power line, improve the overall input power factor of the drive system, and reduce stress on the internal converter components. In addition, the reactor limits high peak currents, mitigates mains voltage disturbances, and protects inverter rectifiers from rapid line surges. Built to support heavy industrial operations, the FR-HEL-H250K is deployed across high-capacity motor control installations, including industrial pumps, fans, compressors, conveyors, and material handling machinery. Integrating this DC reactor into industrial automation control panels enhances system operational reliability, extends drive service life, and ensures stable electrical performance in demanding factory environments.