Fuses Made Simple with Bussmann by Eaton

Bussmann by Eaton is packaging their fuses in a whole new way: Fuses Made Simple. The

Bussmann by Eaton is packaging their fuses in a whole new way: Fuses Made Simple. The

fuses to my right are the branch circuit fuses. These are the UL class rated fuses, proved

by UL to use for a branch circuit protection anywhere on the circuit. These fuses here

to my left are the control circuit fuses. They don't have a class rating; they're more

supplementary-type fuses that supplement the class rated fuses.

Bussmann had 49 different label designs and 10 different fuse families. We know its a

challenge sometimes to figure out what fuse do I use for the right application. We came

up with Fuses Made Simple: we went from the 49 label designs and 10 fuse families down

to four.

As you can see, you have the yellow, green, black and gray fuses. These four fuse families

now make up the entire branch circuit protection of Fuses Made Simple within Bussmann. The

four different fuse families provide three different levels of protection. The color

coding that you see on the fuses indicate a level of protection that is provided. The

yellow fuse, which is our ultimate level of protection, that is the low peak family of

fuses. That provides the highest level of protection that you can get.

The middle two, both the green and black one, fall under the second level of protection,

what we call advanced level. The green fuse is a Fusetron, that is a time delay fuse.

The black one is a Limitron fuse, and that is a fast-acting fuse. The time delay fuses

are going to be used in what's called inductive loads, loads such as motors, transformers,

relays, etc. When you turn them on, they have what's called an initial inrush of current.

That time delay feature allows that inrush to occur and then operate at it's level again.

The fast-acting fuse, on the other hand, is more for resistant loads, such as lighting,

heaters, things of that nature, where there is no inrush of current. It just goes right

to its operating level and its operating fine. Lastly is our basic protection, our general

duty basic fuse which meets the basic requirements of the NEC for overcurrent protection.

On the control circuits, sometimes referred to as supplementary fuses, the branch circuit

is more power applications. The control circuit is providing protection to the controller,

not carrying main power. This is more very application design specific. There also is

a color coding here, now the color coding is not by performance as you see with the

branch circuit. With this one, the color coding is by voltage.

Whether you're selecting the branch circuit or the control circuit, what you'll find is

that now it looks like a Bussmann fuse, the only difference really are the colors.

How to select a control circuit fuse is pretty easy, there's just three steps. First step

is: what application? Is it time delay or is it fast-acting? That's the first question.

The second question is: what voltage do you need? The third question is: what interrupted

rating do you need? Once you know those three things, you can quickly and easily select

a fuse. The whole purpose of coming up with the Fuses Made Simple program is to enable

a customer or an engineer to select and specify the right fuse the fastest.


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