Maxi vs standard fuse?

[DaveC]

Fuses are rated for amperage, so what's the difference between a 30A maxi fuse vs a 30A standard fuse? Thanks!

 

[Paul Hendrickx]

Hello, actually you would ask where do I need fast blowing fuses and where do I want slow blowing fuses... that's the real question in the end
Found this on the net quit good explained

7 Types Of Automotive Fuses: Car Fuse Types W/Pics & Charts

In this article, you will learn about different types of automotive fuses particularly blade fuse along with other car fuse type with a complete amp chart and pics.

www.easycarelectrics.com

hope it helps
Paul

 

[DaveC]

That does help some. Looks like Maxi is designed for circuits with electric motors due to higher start-up current? Like you said, it's more of a delayed failure than immediate.

 

[Neil]

They are called "Slo-Blo" fuses in the industry. They allow for a high inrush current on loads such as motors and tungsten lamps.

 

[Paul Hendrickx]

That does help some. Looks like Maxi is designed for circuits with electric motors due to higher start-up current? Like you said, it's more of a delayed failure than immediate.

Yes you could assume that, the bigger fuses are "slower" and indeed used for high amps start ups .
à 300watt fan motor would use 25 amp consumption when in action but start up could go high as to 35-38amp in the first second
if other members have other idea.. let us know
always ready to learn some more
Paul

 

[Neil]

Yes you could assume that, the bigger fuses are "slower" and indeed used for high amps start ups .
à 300watt fan motor would use 25 amp consumption when in action but start up could go high as to 35-38amp in the first second
if other members have other idea.. let us know
always ready to learn some more
Paul

Paul, it is not the "size" of the fuse (amp rating); a slo-blo fuse has a thermal lag built into its structure that allows the current to exceed its steady-state rating for a brief moment. Normal fuses are designed to blow as fast as possible on overcurrent to protect the load. Circuit breakers are rated similarly.