The smallest high-speed resistor-type tap-changer in the world with maximum reliability and maintenance free for lifetime due to superior vacuum-switching technology. Up to 20 tap-change operations per minute enable quick responses to changing grid situations. For regulating distribution grids, as well as for industrial and wind power applications.
| Number of phases | 3 | 3 | 1 |
| Highest voltage for equipment Um | 24 kV | 36 kV / 40,5 kV | 36 kV |
| Max. rated through-current | 30 A | 30 A / 100 A | 30 A |
| Max. rated step voltage | 550 A | 550 / 825 V | 825 V |
| Max. rated switching capacity | 24,75 kVA | 82,5 kVA | 24,75 kVA |
| Number of positions | max. 9 | max. 17 | max. 9 |
