Based on the characteristics of this product series, the important factors needed considered when selecting MCB, such as current rating, breaking capacity, applicable condition, temperature derated coefficient, altitude etc. were expounded.

• 同时,结合该系列产品特点,阐述了在选用MCB时,其电流规格、分断能力、使用条件、温度降容系数、海拔高度等方面的考虑因素。