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- 6815-13 Class 6815 Type M10/M20, Magnet Controllers, 4-10 & 8-20A, Series A
- 6815-14 Class 6815 Type M35/M60/MF35/MF60, Magnet Controllers, 15-35 & 25-60 A, Series A
- 6815-15 Class 6815 Type M85/MF85, Magnet Controllers, 40-85 A, Series A
- 6815-16 Class 6815 Type M135/MF135, M175/MF175 Magnet Controllers, 60-135 A & 85-175 A, Series A
- 6815-17 Class 6815 Type M10/M20, Magnet Controllers, 4-10 & 8-20, Series B
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