Electrical fuses its types & applications pdf

They are occasionally used in non-automotive electrical products. Unofficially, the “low-profile mini” fuse is sometimes incorrected called “micro” since the term means electrical fuses its types & applications pdf than mini, but recently fuses using the micro name have been released.

The mini fuses were developed in the 1990s. Blade type fuses can be mounted in fuse blocks, in-line fuse holders, or fuse clips. 2, 3, 4, 5, 7. 5, 1, 2, 3, 4, 5, 7. Blade fuses use a common coloring scheme for the micro2, micro3, low-profile mini, mini, and regular size fuses, and a partial color similarity with the maxi size fuses.

The following table shows the commonly available fuses for each size group. Bosch type fuses usually use the same color-coding for the rated current. The physical length of this ceramic type of fuse is either 1 inch or 1. 25 inch, with conical ends. Glass tube fuses have straight ends.

Lucas type fuses usually use the same color-coding for the rated current. Lucas fuses with non Lucas fuses. 4″ diameter glass tube fuse have a different length as compared to the standard US item. 4 amperes to 30 amperes.

There are a number of lookalike fuses which can easily be confused with these. 2AG size, type AGB, 0. 3AG size, type AGC, 0. Some are time delayed, slow reacting, or have leads for terminals used in circuits without a fuse holder. They are used also in electric vehicles, e.

Because strip fuses require the use of tools for replacement they are therefore legally considered non-serviceable components for end-users. This page was last edited on 6 November 2017, at 18:59. This article is about mains power connection devices used in domestic and light commercial environments. 1880s and were initially two-pin designs.

These were usually sold as a mating pair, but gradually de facto and then official standards arose to enable the interchange of compatible devices. BS 546 is also the precursor of current Indian and South African plug standards. BS 546 plugs and sockets are still permitted in the UK, provided the socket has shutters. In this article, the term ‘plug’ is used in the sense defined by IEC 60050. Sockets are designed to prevent exposure of bare energised contacts. These include plugs with insulated sleeves, sockets with blocking shutters, and sockets designed to accept only compatible plugs inserted in the correct orientation.