Silly question for the #ElectricalEngineering people hereโฆ I have DIN-rail fuse holders in my server's solar set-up which take a so-called "midget" fuse (10ร38mm cylindrical).
The holders are rated to 30A, I've actually got two lots of holders, the original ones are 600V rated, the others are 1000V. I'm using panes with an open-circuit voltage of <30V and they wire up in parallel *after* the fuse holders.
I have 10A fast-blow fuses in there now (Littelfuse 0BLF010.T). The panels I'll be putting up on Monday have a short-circuit current of ~18A, so they'll definitely blow at midday. I have some new 20A fuses (Littelfuse 0BLN020.T) coming.
They're kinda pricey and I've got to order them. I was looking at a 5AG fuse today, which I have a stack of 40A ones in stock (I realise my holders are 30A and the panels won't even break 20A)โฆ but really, what is the difference between a 5AG and a midget fuse?
The dimensions are reportedly the same. This is an extra-low-voltage DC install (<48V)โฆ are the midget fuses just a higher rating for industrial use or is there some other gotcha I need to be wary of?
#CircuitProtection #Fuse #5AGFuse #MidgetFuse
Doreen Xu
Stuart Longland (VK4MSL)