关于保险丝的标记

dfcmie

电流保险丝有这样标记“F XXA”，，如“F1A，250V”；也有“T XXA”，如“T 1A，250V”
请问大家，上面的标“F”和“T”有什么不同，各代表什么意思？？？好像还“L XXA”的？

tnq1

Marking Fuse Element Characteristic

FF or UR - Very Fast Acting, Semiconductor Protection Fuse
F - Fast Acting Fuse
M - Medium Acting Fuse
T - Slow Acting Fuse
TT - Very Slow Acting Fuse
L - Low Breaking Capacity
H - High Breaking Capacity