Komponenttivalmistajat antavat speksit, että suunnittelijoiden ei tarvitse käydä tällaista keskustelua. Etenkin jos speksataan kaupallista tuotetta ei valmistajan antamille spekseille kannata viitata kintaalla. Eikä valveutuneen harrastajankaan minusta kannata. Tai sitten unohtaa varolaitteet kokonaan. Esim. kuten tässä ehkä on tehty. https://enerprof.de/en/ebike-batteries/ ... h-50m?c=10
Tässä oli aika hyvin avattu "voltage rating":
"Fuses are first rated by the ac and/or dc circuit voltage into which they can be safely applied. A fuse installed in an AC circuit performs differently than when installed in a DC circuit. With AC circuits, the current is crossing the zero potential at 60 or 50 cycles a second. This helps in breaking the arc that forms when the fuse element melts and creates a gap. In dc circuits, the voltage does not go to a zero potential, making it more difficult to suppress the arc in the melting element’s gap.
Generally, fuse ac voltage ratings coincide with the utility supply, e.g., 110V, 240V, 415V, etc. This means that a fuse is suitable for use with these nominal voltages and is tested for voltage levels at least 15% higher than the nominal rating. This is not true with dc voltage ratings, which are normally maximum ratings and should not be exceeded. More specifically, the voltage rating of a fuse must be equal to or greater than the maximum voltage expected in the application.
Fuses are insensitive to voltage changes within their ratings so selecting the proper voltage rating is strictly a safety issue. Fuses can operate at any voltage below or equal to their rated voltage." Lähde: https://www.powerelectronics.com/techno ... pplication.
Esimerkkinä ATO-sulakkeen datalehti: https://m.littelfuse.com/~/media/automo ... asheet.pdf