BS3036 fuses

lilman · Jan 2, 2010

How do I know whether the short circuit capacity of a BS3036 is 1kA or 2kA? (I know the 4 kA types aren't available in lower current sizes).

binky · Jan 3, 2010

In the 16th OSG there was some guidance on this subject - haven't got to hand and don't remember where it is in 17th OSG.

SPECIAL LOCATION · Jan 4, 2010

How do I know whether the short circuit capacity of a BS3036 is 1kA or 2kA? (I know the 4 kA types aren't available in lower current sizes).

The winter 08 issue of wiring matters has a bit about BS3036

http://www.theiet.org/publishing/wiring-regulations/mag/

e.g.

S1A devices are 1KA. in sizes 5,15,20,30,45, & 60A

S2A devices are 2kA. in sizes 5,15,20,30,45, 60 & 100A

S4A devices are 4kA. in sizes 30,45, 60 & 100A

but it don't say how to identify what type you have!

batty · Jan 4, 2010

The winter 08 issue of wiring matters has a bit about BS3036

http://www.theiet.org/publishing/wiring-regulations/mag/

e.g.

S1A devices are 1KA. in sizes 5,15,20,30,45, & 60A

S2A devices are 2kA. in sizes 5,15,20,30,45, 60 & 100A

S4A devices are 4kA. in sizes 30,45, 60 & 100A

but it don't say how to identify what type you have!

This is problem with 3036 fuses they have no markings as to catagory on them. I had look on wylex site and there is less information available about them. I think you would need to ring Wylex technical to find out. I personally would imagine they are 1ka as I have seen what happens to them when you have a short circuit. I would think the 2ka ones are more your ceramic ones like mem type. The 4ka type is your industrial switch fuses. But I am probably barking up the wrong tree here.

Batty