This PAS provides specification of voltage sub-classes for electric propulsion systems and conductively connected auxiliary electric systems of electrically propelled road vehicles.The voltage sub-classes are related to d.c. electric circuits.It applies only to electric circuits and components with maximum working voltages according to voltage class B.This PAS provides specifications of characteristics which are relevant for design and operation of components and systems for the standardized voltage sub-classes.It enables vehicle manufacturers and supply industry to evaluate the characteristics of components or systems for their specific vehicle applications.