Ceramic Fuse Markings

A ceramic fuse is built to withstand high temperatures.

Ceramic fuse markings.

Our warehouse contains a vast fuse inventory which means we usually have what you need in stock but if we don t the fuse can be drop shipped directly to your facility in a timely manner same day if necessary. Fuses come in many types and sizes including glass fuses which may be slow blow fuses or fast acting fuses. When replacing a lucas fuse with a non lucas glass type fuse you use the smallest rating for the new. Glass fuse markings can provide a lot of information about the type of fuse so you know what to replace it with.

What is the fuse marking according to iec standard 127 and how does this translates to littelfuse s 5x20mm fuse offerings. The film is formed when a short circuit melts the fuse element causing a deposit to be seen on the inside of the fuse barrel as a film. Element surface area to the glass ceramic absorption material. Also what the meaning of various letter number combinations on circuit boards or labels.

Contact us at 1 800 909 fuse 3873 to discuss your fuse. Please see the attached file. Figure sf1 compares the multi layer design of our sff fuses with standard glass coated designs. The only embossed marking on multipart porcelain insulators is the typical but much larger o b used by ohio brass on its unipart styles.

I ve had a few enquiries about coloured bands on fuses and what value is denoted by the colours etc. If you want to know why you need a fuse or why to replace with the correct one see the fuses what and why page. Where many people go wrong is confusing the continuous fusing rating where the fuse pops with the smaller rating of continuous amps which is where fuse operates normally. 5x20mm iec fuse marking.

The more thermally stable fuse is typically filled with sand in order to prevent the conductive film from forming. It s essential that you replace a blown fuse with another of the same type. For more information on other markings found on fuses see the fuses.