Appliances generally do not react well to power surges and overloads. There is always the risk of these appliances burning out or becoming non-functional due to accidental high voltages. Replacing a device every time there is a power surge becomes a costly affair and unnecessary waste of resources. Hence, plug fuses protect expensive electrical appliances from the harms of power load inconsistencies and spikes. The plug fuses are fuses attached to the appliance’s plug and melt in excess power supply, which breaks the circuit and protects the device.
Types of fuses
Fuses are designed to melt once the power spike crosses a specific voltage. Different fuses are sensitive to varying levels of maximum power spikes. Some fuses go off only at significant power spikes, while some fuses are sensitive to small voltage spikes. The choice of the sensitivity of the fuse depends mostly on the voltage capacity of the appliance. Fuse ceiling sensitivities range from as low as 3A to as high as 20A. Fuses with higher sensitivities ranging from 3A to 5A are safer since they can detect even the smallest power surge and are ideal for residential uses.
AC and DC fuses
Plug fuses are available as both AC fuses and DC fuses. The choice depends on the type of appliance for which the fuse needs to be purchased. It is always imperative to choose AC fuses for AC devices and DC fuses for DC devices. Selecting an AC fuse for a DC device or a DC fuse for an AC device can lead to electrical accidents or fires. In both cases, it must be ensured that the fuse can safely clear abnormal currents in the appliance in which the fuse is installed.
Time Delay Vs. Fast Acting fuse
Base on the response times, fuses can be classified as Time Delay fuse and Fast Acting fuse. In the event of an overload, fast-acting fuses go cut the electricity supply instantaneously. However, time-delay fuses sustain the overload for a short period and then cuts the supply, thus creating a small window of time. Time delay fuses are used for capacitor circuits that require a power overload upon on/off, like electric motors and fluorescent lights. For resistive circuits that are sensitive to power surges, a fast-acting plug fuse is ideal.
Categories Simillar to Plug Fuses includes Fuse Holders, Miniature Circuit Breakers and Thermal Circuit Breakers