Nws yuav tsum tsuas yog suav hais tias yog lub npe nominal specification, thiab qhov twg tam sim no ntws los ntawm lub fuse yog loj thiab thaum lub melting yog yaj. txawv. Lub fuse muaj qhov "fuse coefficient" ntau dua "1" (feem ntau ntawm 1.1 thiab 1.5). Nws yog qhov piv ntawm "paj tsis yog-melting tam sim no" thiab "rated tam sim no". Nws tuaj yeem pom tau tias txawm tias qhov tam sim no ntawm lub fuse ntau dua li qhov ntsuas tam sim no thiab tsis tshaj qhov tsis sib xws tam sim no, lub fuse yuav tsum tsis txhob fused.
