Fuses

Fuses serve as a safety measure in electrical systems, protecting human lives from electrical hazards, or equipment from excessive current caused by faults. The 046802.5WR is a time-delay fuse specifically designed for 500 volt class systems. It is widely used in the mining, power distribution, industrial and OEM industries. This article explores the applications and workings of the 046802.5WR.

Application Field

The 046802.5WR is a versatile fuse that is suitable for a broad range of applications. It is often used in computer circuit boards, industrial control circuits, automation controls, robotics, lighting and illumination systems, and electric welders. It can also be used in motor protector circuits, surge protective devices, fire and safety systems, and photovoltaic systems.

When used in photovoltaic systems, the 046802.5WR serves as a DC breaker. It allows critical system components, such as cells, transformers, and junctions, to be protected from high current in case of a short circuit. In motor protector circuits, the 046802.5WR regulates current to prevent motor burnout or malfunction. Likewise, it is also used in surge protective devices to protect equipment against surges or spikes in the mains power.

Working Principle

The 046802.5WR works on the principle of heat dissipation due to current flow. It contains a strip of fuse wire, which melts under excessive current. The fuse wire is linked between two metal conductors, known as contacts, that are protected by an arc quenching medium such as sand. When the current exceeds the rated value, the wire melts due to heat generation, thus opening the circuit and disconnecting the flow of current.

As a time-delay fuse, the 046802.5WR allows momentary over-currents without immediate interruption. It has a time-delay feature that starts tripping only after prolonged current flow. This eliminates regular false tripping and helps preserve the life of the device. The 046802.5WR also features a corrosion resistant base with copper alloy wings for greater conductivity.

Conclusion

The 046802.5WR fuse is a versatile device that is suitable for a variety of applications. It is often used in motor protector circuits, surge protective devices, and photovoltaic systems. It serves as an effective safety measure, protecting lives and costly equipment from electrical hazards. The 046802.5WR works on the principle of heat dissipation due to current flow, allowing momentary over-currents without immediate interruption. Overall, it is an excellent choice for 500 volt class systems.