045101.5MR

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Fuses are safety devices used in various industrial and domestic applications to protect against excessive currents by providing an intentional electrical fuse point that is designed to melt and disconnect the current when it exceeds a rated limit. Fuse links can be categorized in several ways according to their shape, material, usage, application or function. 045101.5MR is one type of fuse which can be used in medium voltage applications and works based on its working principle.

Choosing the Appropriate Fuse Link

The selection of an appropriate fuse link for a given application should be based on the needs and requirements of the user, as well as local safety regulations. Generally, the selection is based on the characteristics of the application, such as operating current, characteristics of the load, operating environment, and fault level. Based on these parameters, the following three different types of fuse links are used for medium voltage applications: 045101.5MR, 045201.5MR, 045301.5MR.

The Working Principle of 045101.5MR

The 045101.5MR fuse link is a medium voltage overload protection device. It works on a principle similar to a ‘blown fuse’. The device comprises two heat responsive elements, typically operating at 1A, which are connected in series with the protected circuit. When the current in the protected circuit exceeds the rated level of the fuse link, the heat generated by the current causes one of the two elements to melt and open the circuit. This causes a break in the circuit that removes the excess current, thus providing protection against damage and fire.

Technical Parameters of 045101.5MR

045101.5MR has the following technical parameters:

• Rated operating current: 690V/100A
• Rated voltage: 400V/10KV
• Operational temperature range: -25°C to +60°C
• Short-circuit current capacity: 18KA
• Fuse material: copper-nickel alloy

Application of 045101.5MR Fuses

045101.5MR fuses can be used in various medium voltage applications such as substations, switchgear, circuit breakers, transformers, and motor circuits. These fuses are also used to protect equipment from electromagnetic interference, over-current, and other faults. Furthermore, they are also used in places where a fast blow time is required or where the fault is not cleared by the normal protection system.

Advantages of 045101.5MR Fuses

The 045101.5MR fuse has several advantages over other types of fuses:

• It has a fast blow time which is ideal for responding to short circuit and overload conditions.
• It has a low opening current that is not affected by small load fluctuations.
• It does not require any additional accessories.
• It is cheaper and more reliable than other types of fuses.
• It is designed with a contact chamber that prevents mechanical shock or vibration.

Conclusion

The 045101.5MR fuse link is a medium voltage protection device that is designed to respond to excess currents, low load fluctuations, and electromagnetic interference. It has a fast blow time, a low opening current, and does not require any additional accessories. It is also cheaper and more reliable than other types of fuses. Due to its many advantages, 045101.5MR is a suitable choice for various medium voltage applications.

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