Qhov kub nce ntawm lub fuse yog hais txog kev txaus siab ntawm qhov ntsuas kub ntawm lub fuse ntawm qhov kub ntawm 1.1 npaug (110 feem pua) cov ntsuas tam sim no ntws hauv lub fuse, uas yog, ntsuas kub rho tawm tus nqi ntawm qhov ntsuas kub. UL tus qauv qhia nws qhov kev txwv siab ntawm 75 degree. Vim hais tias lub fuse lub yaj yog rhiab heev rau qhov kub thiab txias, nyob rau hauv qhov kev txiav txim ntawm ib tug tej yam kub kub rau lub sij hawm ntev, nws melting point thiab impedance yuav hloov, uas yuav cuam tshuam qhov tseeb ntawm lub fuse. Qhov no feem ntau yog fuse aging. Kev laus fuse yog qhov txaus ntshai heev rau kev siv hauv Circuit Court, yog li peb yuav tsum tau them sai sai rau qhov kub ntawm lub fuse thaum ua thiab siv lub fuse. Ib yam li ntawd, peb yuav tsum nco ntsoov tias txawm tias tom qab siv lub sijhawm ntev, cov fuses tsis tau yaj, nws yuav muaj kev laus, thiab nws yog qhov zoo tshaj los hloov nws nyob rau lub sijhawm no.
