Kostal Inveor M INV Alpha IV02 PWxx LP01 AP12 GH01 DK01 CO00KOSTAL INVEOR M variable frequency drives The KOSTAL INVEOR M Alfa frequency inverter is our solid drive controller, which can be optimally adapted to the needs of our customers thanks to its modular concept. It is available as a three phase and a single phase variable frequency drive in five sizes from 0. 25 kW to 0. 75 KW, making it highly versatile. The robust aluminum housing supports its flexibility such that the INVEOR M Alfa can also easily