045401.5NR

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Fuses are the components of a device that are often used to protect from electric shock and limit current to a predetermined threshold. 045401.5NR type fuses are one of the most crucial fuses, with excellent specifications. This type of fuse is usually used for circuit protection in motor applications, both in AC and DC. In this article, we will discuss the application field and the working principle of 045401.5NR type fuses.

045401.5NR Fuse protects the motor from single-phase surge current, so its rated current must be larger than the single-phase startup current of the motor. With its quick break speed, it can effectively protect the motor from damage due to over-current. The fuse is also suitable for the motor applications, which is used to start frequently, as it has a great protective effect.
In addition, the 045401.5NR Fuses are compatible with DIN AC and DC motor protection systems. It is also suitable for the motor application in the heavy-duty, high ambient temperature environment, such as locomotives, oil and gas, etc. The 045401.5NR fuses also have a high over-voltage protection effect and are widely used in industrial electrical distribution systems.

The working principle of 045401.5NR type fuses is based on the principle of Ohm’s law. In this type of fuse, when there is an overload current, the heat generated due to the excessive current will cause an increase in the temperature of the fuse. This thermal increase will cause the fuse element to vaporize so that it forms a low-resistance path for the current to flow, thus restricting the current to the rated value of the fuse. When the faulty phase is removed, the temperature of the fuse element decreases and the fuse element recovers and re-establishes the circuit.
The 045401.5NR fuse also features a double-break mechanism, which provides the required circuit interruption protection even in the case of failure of the fuse element. This double-break mechanism ensures that the circuit does not become live and therefore, does not pose any severe threats to human life or property.

The 045401.5NR fuse is also designed to be flame retardant, which makes a huge difference in terms of safety. When the fuse is subject to external over-voltages caused by lightning or power surges, it also functions as a surge arrester. This ensures that the system remains safe and does not suffer any permanent damage.

In conclusion, the 045401.5NR fuse is designed for the protection of motors and other electrical systems from overload and short-circuit current, as well as voltage breakdown. It is suitable for AC and DC motor applications, in heavy-duty and high ambient temperature environment, and also has a high over-voltage protection effect. The fuse has a double-break mechanism which ensures that the circuit remains safe. It is also designed to be flame retardant, thus providing protection to the system from any external over-voltages caused by power surges or lightning strikes.

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