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Class L and Class RK1 Current Limiting Fuses

Class L and Class RK1 Current Limiting Fuses

Class L and Class RK1 Current Limiting Fuses

(OP)
Can anyone inform me as to what the differences are between current limiting fuse type L and RK1s?  IEEE1584 has different arc flash calculation parameters for each of these different types.  

Any ideas why?

RE: Class L and Class RK1 Current Limiting Fuses

Different clearing times.  Look at a fuse catalog for the characteristic curves of both types of fuses, through in RK5 also just for good measure.

RE: Class L and Class RK1 Current Limiting Fuses

Class L fuses are not normally considered as current limiting.

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