Measures to prevent fuses from catching fire

The main cause of fuse fires is improper use of the melt or flammable materials in the installation environment. Measures to prevent fuses from igniting are:

(1) The rated current of the melt should be compatible with the equipment to be protected. Do not use copper wire or iron wire instead.

The so-called rated current of the melt refers to the current that allows long-term passage through the melt, and the fusing current of the melt refers to the current at which the melt begins to blow when the current through the melt exceeds 1.5 times its rated current.

(2) Correct selection. In places where there is a risk of explosion, ordinary fuses are not allowed to be installed. They should be sealed with a special type of fuse or a sealed casing.

(3) In order to avoid the burning of surrounding flammable materials caused by melt explosion, the fuse should be installed outside the dangerous place as much as possible.

(4) Generally, fuses should be installed on the power supply line, line branch line and load equipment.

(5) The connection between the connectors of the fuse and the wires should be firm and reliable, and the contact jaws should have sufficient pressure.

(6) The high-current fuse should be installed on a heat-resistant pedestal (such as slate, porcelain plate, asbestos board, etc.), and the sealed protective shell should be made of porcelain or iron material, and it is not allowed to use flammable paper, three plywood, etc. Object.

(7) Daily inspection, cleaning, and timely replacement of defective fuse parts.

(8) Do not stack flammable or combustible materials around the fuses to avoid ignition of these items when the melt breaks. Do not stack wires or wires to avoid short-circuit accidents.