所谓限流就是熔断器在短路电流达到峰值之前就将其切断的功能。
The current limit is fuse in short circuit current peak before cutting off its function.
此可熔断元件恰当的形状和横截面使其可连续通过额定电流，而对于严重过负荷或短路，按规定的时间一电流特性而熔断。
This element is of proper shape and cross-section to carry rated current continuously and to melt in accordance with a specific time-current characteristic on heavy overload or short circuit.
熔断器选择必须依据其使用条件来进行，主要有系统电压、额定电流、短路容量、保护配合等。
Selection of fuses must be carried out according to their use conditions, mainly they are system voltage, rated current, short circuit capacity, protection suitability etc.
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