Quick fuse question

@rodman99999  they are made in China but they are they same as AMR fuses from the UK. I really don't just want to place a higher value fuse in the amp. The original MDQ 5A fuse still works fine, the 5A standard fuse was a Bussman that I had from another component and it blew. I was going to get some HIFI Tuning but dont want to just through money down the drain if there not going to work.

Dual element fuse sizes are selected by different maths than the typical fuse. The ARC fuse is sized closer to the overload trip than the short trip. Single element fuses only do shorts. In this case, the overload trip is the fuse rating and is 5 amps and the short trip is, I dunno, 7 amps. If you substitute a 5 amp single element it will trip since 7 amps is coming through on inrush.

mktracy-    Was the Bussman 5A a dual-element?     If a single wire, twisted around a small rod, it was a Slo-Blo.        There’s a difference in time and function, between those two designs (see, "Selection Considerations" and, "Fuse Characteristics Curves and Charts", page 6 and on, in the link below).     If a higher value seems too great a gamble, but- the only recourse (far as an upgraded fuse); that stock dual-element must remain.                 Peace of mind’s important! https://m.littelfuse.com/~/media/electrical/application-notes/powr-gard-technical-application-guide....

@gs5556 Thank you for the info.@rodman99999 No the Bussman 5A was just a regular Slow-Blow 5A fuse. Not sure what brand the original MDQ5A is but it is back in the amp and works fine. So guys is it safe to say that if I put a 6.3A boutique fuse (AMR fuse) in the ARC D200 that it will be protected and work fine. Or am I just out of luck with using a audiophile fuse?

I'd try an AMR 5A, Slow-Blow and see if it holds.      The 5A Bussman may have been old and compromised/weak, from however long it had been in use, prior.       If a 5A AMR won't hold, through a normal start-up; your amp won't hurt itself with a 6.3A.           If that holds and lasts a while, go for a HI-FI Tuning Supreme.     They make both 5A and 6.3A (you may already know).      I like 'em!