6KTH

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Electrical, Specialty Fuses

Fuses are the primary method of protection for electricity in circuits. Fuse types vary widely, from simple fast-blow (fusible link) to complex, intelligent and selective systems. Of all the specialty fuses, the 6KTH application field and working principle is one of the most used.

The 6KTH Application Field

The 6KTH application field is the safe and reliable over-current protection in electric and electronic equipment. It is widely applied in a variety of devices ranging from air conditioners, washing machines, TVs, boilers to computers. It is most commonly used in commercial and industrial applications requiring both over-current protection and short-circuit protection. The 6KTH is designed to prevent direct and indirect short-circuits and also to protect heavy duty motors. It has been certified according to the standard of IEC/EN 60269-1.

Working Principle

The 6KTH is designed for short-circuit protection, over-current protection, and thermal protection. This type of fuse is especially suitable for the most Common Mode applications requiring both short-circuit protection and over-current protection in commercial and industrial applications. It is designed to prevent over-current in the circuit by either blowing the fuse element or by opening the circuit. When an over-current occurs, heat is generated in the element and the fuse opens the circuit.

The fuse limits the network current to protect the electrical components from over-currents. The fuse’s current-limiting capability is enabled by its time-delay feature which prevents short-circuits from immediately tripping the fuse. This allows the fuse to limit fault current to a level which wouldn’t be achievable without this feature. The delayed action helps to protect the equipment from high energy transients by allowing protective devices like circuit breakers to operate before the fuse opens.

The fuse is made up of two parts: a fuse element and a fuse holder. In normal operation, the element is rated based on the continuous operating current of the load and the fuse holder is rated based on the peak current of the load. When an over-current occurs, the fuse element melts or vaporizes, thus isolating the load from the rest of the circuit. The fuse holder prevents short-circuits by holding the fuse element in place.

The 6KTH is an efficient and reliable tool for over-current protection. It provides a simple solution to problems of over-current and short-circuits while also protecting heavy motor load. It is a cost-effective solution for commercial and industrial applications and has been certified according to the international standard of IEC/EN 60269-1.

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