Reduction of electrolytic corrosion in a brushless DC motor

Disclosed is a controller (1) to reduce electrolytic corrosion in a brushless DC motor (3). The control unit (1) is performed, phase (9, 11, 13) to control the brushless DC motor (3). The control device (1) has a potential equalization connector (5) and a potential equalization line (7). The potential equalization line (7) is executed thereby to connect the brushless DC motor (3) with the potential equalizing connection (5). At the potential equalization line (7) is an anti-corrosion resistance (R