Breakers traditionally have time delay built in. Don't the drives have current limit protection?
Most modern drives have this feature, and in most cases the drive current limit together with fast acting fusing in the motor lead would be sufficient, if you think it is needed.
AC breakers are not really designed for breaking DC, if you did use one, loop one of the conductors back through the 3rd terminal.
Also if the actuating mechanism is by current transformer method, they may not function correctly on DC.