IEEE Draft Standard for Preferred Ratings, Related Requirements, and Application Recommendations for Low-Voltage AC (635V and Below) and DC (3200V and Below) Power Circuit Breakers

This standard defines the preferred ratings for low-voltage ac (635V and below) power circuit breakers, general purpose dc (325V and below) power circuit breakers, heavy duty low voltage dc (3200V and below) power circuit breakers, and fused (integrally or non-integrally) low voltage ac (600V and below) power circuit breakers.