Fuses

[Alwayslearningelec]

I have a 200A fusible disconnect switch. Would 125A fuses fit in the holder or would I need fuse reducer? Thanks.

 

[augie47]

Should be O.K.

The most commonly seen disconnects come in staged amperage sizes of 30, 60, 100, 200 and 400 amps. There also are 600-, 800- and 1,200-amp sizes,

 

[ptonsparky]

There are different fuse types, but they generally follow the staged sizes as well. K will not fit in a J.

 

[Alwayslearningelec]

So a 125A fuse will not fit in 200A switch fuse holder?

 

[ptonsparky]

So a 125A fuse will not fit in 200A switch fuse holder?

It will if they are the same class of fuse. A 125 is the same physical size as a 200.