The VFD68 drives meet the requirements for their respective rating categories (Table 1).
| Rating Category | Suitable for use in a circuit capable of delivering not more than |
|---|---|
| VFD68Bxx Drives (230 VAC Class) | 100 kA rms symmetrical amperes, 264 V maximum |
| VFD68Cxx Drives (460 VAC Class) | 100 kA rms symmetrical amperes, 528 V maximum |
| VFD68Dxx Drives (575 VAC Class) | 100 kA rms symmetrical amperes, 600 V maximum |