MDQ-3/8

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Fuses

A fuse is a current-limiting device used in electric circuits for protection against the flow of excessive current. Fuses are found in various designs, sizes and different applications to suit a particular electrical circuit. One of these fuse designs is called the MDQ-3/8 which is used in the protection of electrical circuits with AC or DC networks.

MDQ-3/8 Application Field

The MDQ-3/8 fuse is mainly used for domestic electric installations and industrial application. It is suitable for circuit of nominal current up to 100A. The MDQ-3/8 fuse is also suitable for wire circuit protection of motors, transformers, generators, pillars, junction boxes, cables and electrical circuits.

MDQ-3/8 Working Principle

The MDQ-3/8 fuse consists of an overload protection element with a bimetal thermal element. The bimetal element has a low temperature coefficient and is made of a combination of materials that react to changes in temperature. This makes it ideal for sensing current overloads in electrical circuits. When an abnormal current passes through the bimetal, it causes the element to warp and open the electric circuit, thereby preventing the overloaded current from damaging the circuit or equipment.

The MDQ-3/8 also features a short circuit protection element. The element melts when a short circuit occurs, and the circuit is opened thus preventing the short circuit from causing harm. The MDQ-3/8 also includes a notch on the body of the fuse to prevent use in the wrong circuit and to provide additional protection.

The MDQ-3/8 fuse provides a low profile and compact construction, allowing it to be used in tight spaces. It has an operating voltage of up to 1000V AC/DC and a rated current range of up to 100A. The fuse meets UL 248 standard requirements and is suitable for both residential and commercial applications.

Conclusion

The MDQ-3/8 fuse is a current-limiting device designed for electric circuits up to 100A and with operating voltages of up to 1000V AC/DC. Its combination of overload and short circuit protection elements make it suitable for domestic and industrial applications. The low profile and compact construction also make it suitable for tight spaces. The MDQ-3/8 fuse meets the requirements of UL 248 standard and further contributes to the safety of electric circuits.

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