BK/PCF-2-R

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A fuse, sometimes known by its full name as an over-current protection device, is an electrical device, which is designed to avoid any potentially damaging over-currents in electrical circuits by being triggered into the open or "off" position when the current exceeds the physical limits of the fuse. The BK/PCF-2-R fuse is an example of such a device and is designed for a wide variety of applications. This article will discuss the application field and working principle of this device.

Application Field

The BK/PCF-2-R fuse is a heavy-duty fuse designed for use in medium to high voltage circuits. It is suitable for use with alternating current (AC) or direct current (DC) applications, and is capable of carrying currents from 250A up to 3,000A. The fuse offers high thermal and short circuit performance and is suitable for usage in outdoor, marine, and industrial applications.

Working Principle

The BK/PCF-2-R fuse operates using a cut-off principle, which means it relies on the breaking of a thin wire filament inside the device. The thin metal filament is a heat-sensitive element and when current passes through it, it causes the filament to overheat and break. This action results in the fuse turning off (opening) and no further current passing through. The fuse is designed with a precise amount of current in mind and so the wire filament breaks when the current exceeds this amount.

The fuse can be reset by simply replacing the wire filament. This resetting process should only be done by trained and certified personnel who know how to correctly and safely do so. Resetting the fuse should only be done using the correct tools and when adhering to the manufacturer’s safety instructions.

In summary, the BK/PCF-2-R fuse is a heavy-duty fuse designed for use in medium to high voltage circuits and is suitable for both AC and DC applications. It works by using a cut-off principle where a thin wire filament is heated to breaking point when current passes through it. The fuse can be reset by replacing the wire filament, though this should always be done by trained personnel.

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