What is Distribution Fuse Board (D.F.B)?

A distribution fuse board (D.F.B) may be defined as a unit which consist one or more protective devices against over current. An installation in a house will usually require only one distribution fuse board (D.F.B) .

The supply to the D.F.B (distribution fuse board) is controlled by a consumer's main switch. Large installations will of course, have several distribution fuse boards each supplying one separate section of the premises.
In such cases, the incoming mains are taken to a main distribution fuse board, where they connect to a number of large fuses protecting main sub-circuits.

Distribution Fuse Board (D.F.B)

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